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<div id="pf1" class="pf w0 h0" data-page-no="1"><div class="pc pc1 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6247252562b5053d3c4a72b7/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">2014<span class="_ _0"></span><span class="ff2">，<span class="_ _1"></span><span class="ff1">41<span class="_ _0"></span><span class="ff2">（<span class="_ _2"> </span></span>7<span class="_ _3"></span><span class="ff2">）</span></span></span></div><div class="t m0 x2 h2 y2 ff3 fs0 fc0 sc0 ls0 ws0">运</div><div class="t m0 x3 h2 y3 ff3 fs0 fc0 sc0 ls0 ws0">行与<span class="_ _0"></span>保<span class="_ _0"></span>护<span class="ff4 fc1"></span></div><div class="t m0 x4 h3 y4 ff4 fs1 fc0 sc0 ls1 ws0"></div><div class="t m1 x5 h4 y5 ff5 fs2 fc2 sc0 ls0 ws0">E<span class="_ _4"></span>M<span class="_ _5"></span>C<span class="_ _4"></span>A</div><div class="t m0 x6 h5 y6 ff3 fs3 fc0 sc0 ls2 ws0">基于流方的笼型异步电机转子故障诊断</div><div class="t m0 x7 h6 y7 ff6 fs2 fc0 sc0 ls0 ws0">王<span class="_ _6"> </span>臻</div><div class="t m0 x8 h6 y8 ff6 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x9 h6 y7 ff6 fs2 fc0 sc0 ls0 ws0">李<span class="_ _6"> </span>承</div><div class="t m0 xa h6 y8 ff6 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 xb h6 y7 ff6 fs2 fc0 sc0 ls0 ws0">王<span class="_ _6"> </span>蕾</div><div class="t m0 xc h7 y9 ff7 fs2 fc0 sc0 ls0 ws0">(</div><div class="t m0 xd h7 ya ff7 fs2 fc0 sc0 ls0 ws0">华</div><div class="t m0 xe h8 yb ff7 fs2 fc0 sc0 ls0 ws0">中科<span class="_ _0"></span>技<span class="_ _0"></span>大学<span class="_ _7"> </span>电气<span class="_ _0"></span>与<span class="_ _0"></span>电<span class="ff8">子<span class="_ _0"></span></span>工<span class="_ _0"></span>程学<span class="_ _0"></span>院</div><div class="t m0 xf h7 yc ff7 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x10 h7 yb ff7 fs2 fc0 sc0 ls0 ws0">湖北<span class="_ _7"> </span>武汉</div><div class="t m0 x11 h7 yc ff9 fs2 fc0 sc0 ls0 ws0">430074<span class="_ _8"></span><span class="ff7">)</span></div><div class="t m0 x12 h2 yd ff3 fs0 fc0 sc0 ls0 ws0">摘<span class="_ _9"> </span>要</div><div class="t m0 x13 h2 ye ff3 fs0 fc0 sc0 ls0 ws0">：</div><div class="t m0 x14 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">从笼型异步电机定子电流出发</div><div class="t m0 x15 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">，</div><div class="t m0 x16 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">建立了流方的概念</div><div class="t m0 x17 h2 ye ff2 fs0 fc0 sc0 ls0 ws0">，</div><div class="t m0 x18 h2 yd ff2 fs0 fc0 sc0 ls0 ws0">通过电流</div><div class="t m0 x19 h2 yf ff2 fs0 fc0 sc0 ls0 ws0">的<span class="_ _0"></span>自<span class="_ _0"></span>乘<span class="_ _0"></span>方</div><div class="t m0 x1a h2 y10 ff2 fs0 fc0 sc0 ls0 ws0">（</div><div class="t m0 x1b h2 yf ff2 fs0 fc0 sc0 ls0 ws0">流<span class="_ _0"></span>方</div><div class="t m0 x1c h2 y10 ff2 fs0 fc0 sc0 ls0 ws0">）</div><div class="t m0 x1d h2 yf ff2 fs0 fc0 sc0 ls3 ws0">放大和转移故障特</div><div class="t m0 x1e h2 y11 ff2 fs0 fc0 sc0 ls0 ws0">征频率</div><div class="t m0 x1f h9 y12 ffa fs0 fc0 sc0 ls0 ws0">。</div><div class="t m0 x20 h2 y11 ff2 fs0 fc0 sc0 ls0 ws0">通过理论推导分别提取了转子断条故障和转子偏心故障在流方中的特征故障频率分量</div><div class="t m0 x21 h2 y12 ff2 fs0 fc0 sc0 ls0 ws0">，</div><div class="t m0 x22 h2 y11 ff2 fs0 fc0 sc0 ls0 ws0">以此<span class="_ _0"></span>故<span class="_ _0"></span>障频<span class="_ _0"></span>率</div><div class="t m0 x1e h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">辨识转子断条故障和偏心故障</div><div class="t m0 x23 h2 y14 ff2 fs0 fc0 sc0 ls0 ws0">，</div><div class="t m0 x24 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">有效避免了转子断条<span class="ls4">故障定子电流故障频率易被基频淹没的<span class="_ _0"></span>缺点</span></div><div class="t m0 x2 h2 y14 ff2 fs0 fc0 sc0 ls0 ws0">，</div><div class="t m0 x25 h2 y13 ff2 fs0 fc0 sc0 ls0 ws0">并<span class="_ _0"></span>可<span class="_ _0"></span>对<span class="_ _0"></span>转<span class="_ _0"></span>子</div><div class="t m0 x1e h2 y15 ff2 fs0 fc0 sc0 ls0 ws0">复合故障进行辨别诊断</div><div class="t m0 x26 h9 y16 ffa fs0 fc0 sc0 ls0 ws0">。</div><div class="t m0 x27 h2 y15 ff2 fs0 fc0 sc0 ls0 ws0">理论和试验结果验证了基于流方的电机故障诊断方法的精确性</div><div class="t m0 x28 h9 y16 ffa fs0 fc0 sc0 ls0 ws0">。</div><div class="t m0 x12 h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">关键<span class="_ _0"></span>词</div><div class="t m0 x13 h2 y18 ff3 fs0 fc0 sc0 ls0 ws0">：</div><div class="t m0 x14 h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">转子<span class="_ _0"></span>断<span class="_ _0"></span>条</div><div class="t m0 x26 h2 y18 ff3 fs0 fc0 sc0 ls0 ws0">；</div><div class="t m0 x29 h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">转子<span class="_ _0"></span>偏<span class="_ _0"></span>心</div><div class="t m0 x2a h2 y18 ff3 fs0 fc0 sc0 ls0 ws0">；</div><div class="t m0 x2b h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">流方</div><div class="t m0 x2c h2 y18 ff3 fs0 fc0 sc0 ls0 ws0">；</div><div class="t m0 x2d h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">故障<span class="_ _0"></span>特<span class="_ _0"></span>征频<span class="_ _0"></span>率</div><div class="t m0 x2e h2 y18 ff3 fs0 fc0 sc0 ls0 ws0">；</div><div class="t m0 x2f h2 y17 ff3 fs0 fc0 sc0 ls0 ws0">频谱<span class="_ _0"></span>分<span class="_ _0"></span>析</div><div class="t m0 x12 h2 y19 ff3 fs0 fc0 sc0 ls0 ws0">中图<span class="_ _0"></span>分<span class="_ _0"></span>类号</div><div class="t m0 x30 h2 y1a ff3 fs0 fc0 sc0 ls0 ws0">：<span class="_ _a"> </span><span class="ff9">TM<span class="_ _2"> </span>307</span></div><div class="t m0 x31 h2 y19 ff3 fs0 fc0 sc0 ls0 ws0">文献<span class="_ _0"></span>标<span class="_ _0"></span>志码</div><div class="t m0 x32 h2 y1a ff3 fs0 fc0 sc0 ls0 ws0">：<span class="_ _a"> </span><span class="ff9">A</span></div><div class="t m0 x33 h2 y19 ff3 fs0 fc0 sc0 ls0 ws0">文章<span class="_ _0"></span>编<span class="_ _0"></span>号</div><div class="t m0 x34 h2 y1a ff3 fs0 fc0 sc0 ls0 ws0">：<span class="_ _b"> </span><span class="ff9">1673<span class="_ _0"></span>-<span class="_ _c"></span>6540<span class="_ _0"></span><span class="ff2">（<span class="_ _2"> </span></span>2014<span class="ff2">）<span class="_ _2"> </span></span>07<span class="_ _0"></span>-<span class="_ _c"></span>0043<span class="_ _0"></span>-<span class="_ _c"></span>06</span></div><div class="t m0 x35 ha y1b ff1 fs4 fc0 sc0 ls0 ws0">Ｒotor<span class="_ _a"> </span>Fau<span class="_ _d"></span>lt<span class="_ _a"> </span>Diagn<span class="_ _d"></span>osis<span class="_ _a"> </span>of<span class="_ _a"> </span>S<span class="_ _d"></span>qu<span class="_ _d"></span>irrel<span class="_ _a"> </span>Cage<span class="_ _a"> </span>Asyn<span class="_ _d"></span>chronou<span class="_ _d"></span>s<span class="_ _a"> </span>Motor</div><div class="t m0 x36 ha y1c ff1 fs4 fc0 sc0 ls0 ws0">Based<span class="_ _a"> </span>on<span class="_ _b"> </span>Stator<span class="_ _a"> </span>Current's<span class="_ _a"> </span>Sq<span class="_ _d"></span>ua<span class="_ _d"></span>re</div><div class="t m0 x37 h6 y1d ffb fs2 fc0 sc0 ls0 ws0">WANG<span class="_ _7"> </span>Zhe<span class="_ _d"></span>n<span class="_ _0"></span><span class="ff2">，<span class="_ _e"> </span></span>LI<span class="_ _7"> </span>Cheng<span class="ff2">，<span class="_ _e"> </span></span>WANG<span class="_ _7"> </span>Lei</div><div class="t m0 x38 h6 y1e ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ff9">School<span class="_ _7"> </span>of<span class="_ _f"> </span>E<span class="_ _0"></span>lectrical<span class="_ _f"> </span>and<span class="_ _7"> </span>Electronic<span class="_ _7"> </span>Engineering<span class="_ _0"></span></span>，<span class="_ _5"></span><span class="ff9">H<span class="_ _d"></span>uazhong<span class="_ _7"> </span>Uni<span class="_ _d"></span>versity<span class="_ _f"> </span>of<span class="_ _7"> </span>Science<span class="_ _7"> </span>and</span></div><div class="t m0 x39 h6 y1f ff9 fs2 fc0 sc0 ls0 ws0">Technology<span class="ff2">，<span class="_ _5"></span><span class="ff9">Wuhan<span class="_ _10"> </span>430074<span class="_ _8"></span><span class="ff2">，<span class="_ _5"></span><span class="ff9">China<span class="ff2">）</span></span></span></span></span></div><div class="t m0 x12 h2 y20 ff1 fs0 fc0 sc0 ls0 ws0">Abstrac<span class="_ _d"></span>t<span class="ff2">：<span class="_ _e"> </span><span class="ff9">Based<span class="_ _f"> </span>on<span class="_ _b"> </span>th<span class="_ _d"></span>e<span class="_ _11"> </span>data<span class="_ _11"> </span>of<span class="_ _11"> </span>squir<span class="_ _d"></span>rel<span class="_ _11"> </span>cage<span class="_ _11"> </span>async<span class="_ _d"></span>hronous<span class="_ _7"> </span>motor<span class="_ _11"> </span>stator<span class="_ _11"> </span>curren<span class="_ _d"></span>t<span class="ff2">，</span>a<span class="_ _11"> </span>conce<span class="_ _d"></span>pt<span class="_ _11"> </span>of<span class="_ _11"> </span>the<span class="_ _11"> </span>square<span class="_ _11"> </span>of</span></span></div><div class="t m0 x1e h2 y21 ff9 fs0 fc0 sc0 ls0 ws0">current<span class="_ _f"> </span>was<span class="_ _a"> </span>built<span class="ff2">，<span class="_ _3"></span></span>which<span class="_ _a"> </span>could<span class="_ _a"> </span>transfer<span class="_ _a"> </span>and<span class="_ _a"> </span>amplify<span class="_ _a"> </span>the<span class="_ _a"> </span>fault<span class="_ _e"> </span>chara<span class="_ _d"></span>cteristic<span class="_ _a"> </span>frequen<span class="_ _d"></span>cy．<span class="_ _12"> </span>The<span class="_ _a"> </span>fault<span class="_ _a"> </span>characteristic</div><div class="t m0 x1e h2 y22 ff9 fs0 fc0 sc0 ls0 ws0">frequen<span class="_ _d"></span>cy<span class="_ _10"> </span>compone<span class="_ _d"></span>nts<span class="_ _10"> </span>were<span class="_ _10"> </span>extracted<span class="_ _10"> </span>respectiv<span class="_ _d"></span>ely<span class="_ _10"> </span>to<span class="_ _10"> </span>identify<span class="_ _10"> </span>rotor<span class="_ _10"> </span>broken<span class="_ _10"> </span>bar<span class="_ _10"> </span>fault<span class="_ _10"> </span>and<span class="_ _10"> </span>rotor<span class="_ _10"> </span>eccentricity<span class="_ _10"> </span>fault<span class="ff2">，<span class="_ _5"></span><span class="ff9">which</span></span></div><div class="t m0 x1e hb y23 ff9 fs0 fc0 sc0 ls0 ws0">effectively<span class="_ _10"> </span>avoid<span class="_ _d"></span>s<span class="_ _10"> </span>the<span class="_ _f"> </span>fault<span class="_ _7"> </span>characteri<span class="_ _d"></span>stic<span class="_ _7"> </span>freque<span class="_ _d"></span>ncy<span class="_ _7"> </span>compo<span class="_ _d"></span>nents<span class="_ _7"> </span>of<span class="_ _7"> </span>stat<span class="_ _d"></span>or<span class="_ _7"> </span>current<span class="_ _7"> </span>be<span class="_ _d"></span>ing<span class="_ _7"> </span>drown<span class="_ _d"></span>ed<span class="_ _7"> </span>easily<span class="_ _7"> </span>by<span class="_ _7"> </span>ba<span class="_ _d"></span>se<span class="_ _7"> </span>wave</div><div class="t m0 x1e h2 y24 ff9 fs0 fc0 sc0 ls0 ws0">frequen<span class="_ _d"></span>cy．<span class="_ _e"> </span>At<span class="_ _10"> </span>the<span class="_ _10"> </span>same<span class="_ _10"> </span>time<span class="ff2">，<span class="_ _5"></span><span class="ff9">the<span class="_ _10"> </span>me<span class="_ _d"></span>thod<span class="_ _10"> </span>could<span class="_ _10"> </span>d<span class="_ _d"></span>iagnose<span class="_ _10"> </span>com<span class="_ _d"></span>posite<span class="_ _10"> </span>fault<span class="_ _d"></span>s．<span class="_ _e"> </span>The<span class="_ _10"> </span>the<span class="_ _d"></span>ory<span class="_ _10"> </span>and<span class="_ _10"> </span>exper<span class="_ _d"></span>imental<span class="_ _10"> </span>resu<span class="_ _d"></span>lts<span class="_ _10"> </span>rerify</span></span></div><div class="t m0 x1e hb y25 ff9 fs0 fc0 sc0 ls0 ws0">the<span class="_ _10"> </span>precision<span class="_ _10"> </span>of<span class="_ _10"> </span>the<span class="_ _10"> </span>motor<span class="_ _10"> </span>fault<span class="_ _10"> </span>diagnosis<span class="_ _10"> </span>method<span class="_ _10"> </span>based<span class="_ _10"> </span>on<span class="_ _10"> </span>the<span class="_ _10"> </span>square<span class="_ _10"> </span>of<span class="_ _10"> </span>current．</div><div class="t m0 x12 h2 y26 ff1 fs0 fc0 sc0 ls0 ws0">Key<span class="_ _7"> </span>words<span class="ff2">：<span class="_ _13"> </span></span>rotor<span class="_ _a"> </span>bro<span class="_ _d"></span>ken<span class="_ _a"> </span>bar<span class="ff2">；<span class="_ _13"> </span></span>rotor<span class="_ _a"> </span>ecc<span class="_ _d"></span>entricity<span class="ff2">；<span class="_ _13"> </span></span>curren<span class="_ _d"></span>t's<span class="_ _a"> </span>squar<span class="_ _d"></span>e<span class="ff2">；<span class="_ _13"> </span></span>fault<span class="_ _a"> </span>characte<span class="_ _d"></span>ristic<span class="_ _a"> </span>frequ<span class="_ _d"></span>ency<span class="ff2">；</span></div><div class="t m0 x1e hc y27 ff1 fs0 fc0 sc0 ls0 ws0">spectrum<span class="_ _10"> </span>an<span class="_ _d"></span>alysis</div><div class="t m0 x3a hd y28 ff9 fs4 fc0 sc0 ls0 ws0">0</div><div class="t m0 x1e he y29 ff6 fs4 fc0 sc0 ls0 ws0">引<span class="_ _14"> </span>言</div><div class="t m0 x1e h6 y2a ff2 fs2 fc0 sc0 ls5 ws0">三相交流异步电动机是应用最广泛的</div><div class="t m0 x15 h6 y2b ff2 fs2 fc0 sc0 ls5 ws0">电气<span class="_ _0"></span>设</div><div class="t m0 x4 h6 y2c ff2 fs2 fc0 sc0 ls0 ws0">备之<span class="_ _0"></span>一</div><div class="t m0 x3b h6 y2d ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x3c h6 y2c ff2 fs2 fc0 sc0 ls6 ws0">其用电量占整个电力系统总用电<span class="_ _0"></span>量的</div><div class="t m0 x3a hf y2e ff9 fs2 fc0 sc0 ls0 ws0">60<span class="_ _8"></span>%</div><div class="t m0 x1e h6 y2f ff2 fs2 fc0 sc0 ls0 ws0">以上</div><div class="t m0 x3d h10 y2e ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x3e h6 y2f ff2 fs2 fc0 sc0 ls7 ws0">对<span class="_ _d"></span>电<span class="_ _15"></span>机进行<span class="_ _15"></span>必要的早期监测</div><div class="t m0 x32 h6 y2e ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x15 h6 y2f ff2 fs2 fc0 sc0 ls0 ws0">提<span class="_ _8"></span>前<span class="_ _8"></span>发</div><div class="t m0 x4 h6 y30 ff2 fs2 fc0 sc0 ls0 ws0">现故<span class="_ _0"></span>障<span class="_ _0"></span>征兆</div><div class="t m0 x3e h6 y31 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x3f h6 y30 ff2 fs2 fc0 sc0 ls5 ws0">及时采取有效措施</div><div class="t m0 x40 h6 y31 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x41 h6 y30 ff2 fs2 fc0 sc0 ls0 ws0">对降<span class="_ _0"></span>低<span class="_ _0"></span>事故<span class="_ _0"></span>的<span class="_ _8"></span>发</div><div class="t m0 x4 h6 y32 ff2 fs2 fc0 sc0 ls5 ws0">生率和严重程度具有重要意义</div><div class="t m0 x23 h10 y33 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x41 h6 y32 ff2 fs2 fc0 sc0 ls0 ws0">故障<span class="_ _0"></span>早<span class="_ _0"></span>期信<span class="_ _0"></span>号<span class="_ _8"></span>微</div><div class="t m0 x4 h6 y34 ff2 fs2 fc0 sc0 ls0 ws0">弱</div><div class="t m0 x42 h10 y35 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x43 h6 y34 ff2 fs2 fc0 sc0 ls0 ws0">运行<span class="_ _0"></span>环<span class="_ _0"></span>境变<span class="_ _0"></span>化</div><div class="t m0 x44 h10 y35 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x30 h6 y34 ff2 fs2 fc0 sc0 ls5 ws0">负载波动都会增大信号检测<span class="_ _0"></span>的</div><div class="t m0 x4 h6 y36 ff2 fs2 fc0 sc0 ls0 ws0">困难</div><div class="t m0 x1e h10 y37 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x3b h6 y36 ff2 fs2 fc0 sc0 ls0 ws0">因此</div><div class="t m0 x3e h6 y37 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x3f h6 y36 ff2 fs2 fc0 sc0 ls8 ws0">采取有效实用的方法及时识别电机</div><div class="t m0 x4 h6 y38 ff2 fs2 fc0 sc0 ls0 ws0">故障<span class="_ _0"></span>是<span class="_ _0"></span>必要<span class="_ _8"></span>的</div><div class="t m0 x45 h10 y39 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x14 h6 y38 ff2 fs2 fc0 sc0 ls0 ws0">目<span class="_ _8"></span>前</div><div class="t m0 x46 h6 y39 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x47 h6 y38 ff2 fs2 fc0 sc0 ls8 ws0">基于定子信号检测的<span class="_ _0"></span>电机</div><div class="t m0 x4 h6 y3a ff2 fs2 fc0 sc0 ls8 ws0">故<span class="_ _15"></span>障<span class="_ _d"></span>诊<span class="_ _15"></span>断是<span class="_ _15"></span>应用最广泛的方法</div><div class="t m0 x48 h6 y3b ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x49 h6 y3a ff2 fs2 fc0 sc0 ls0 ws0">具<span class="_ _8"></span>体<span class="_ _8"></span>包<span class="_ _8"></span>括<span class="_ _8"></span>快<span class="_ _0"></span>速<span class="_ _3"></span>傅</div><div class="t m0 x4 h6 y3c ff2 fs2 fc0 sc0 ls0 ws0">里叶<span class="_ _8"></span>变<span class="_ _3"></span>换</div><div class="t m0 x4a h6 y3d ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _7"> </span><span class="ff9">Fast<span class="_ _b"> </span>Fourier<span class="_ _b"> </span>Transform</span>，<span class="_ _15"></span><span class="ff9">FFT<span class="_ _8"></span><span class="ff2">）<span class="_ _f"> </span><span class="ffc">、</span></span></span></div><div class="t m0 x4b h6 y3c ff2 fs2 fc0 sc0 ls0 ws0">频<span class="_ _3"></span>域<span class="_ _3"></span>分</div><div class="t m0 x4 h6 y3e ff2 fs2 fc0 sc0 ls0 ws0">析</div><div class="t m0 x4c h11 y3f ff2 fs5 fc0 sc0 ls0 ws0">［<span class="_ _5"></span><span class="ff9">1<span class="_ _16"></span><span class="ff2">］</span></span></div><div class="t m0 x4d h10 y40 ffa fs2 fc0 sc0 ls0 ws0">、<span class="_ _1"></span><span class="ff9">P<span class="_ _15"></span>ark</span></div><div class="t m0 x35 h6 y41 ff2 fs2 fc0 sc0 ls0 ws0">矢</div><div class="t m0 x4e h6 y3e ff2 fs2 fc0 sc0 ls0 ws0">量<span class="_ _3"></span>法</div><div class="t m0 x4f h11 y3f ff2 fs5 fc0 sc0 ls0 ws0">［<span class="_ _5"></span><span class="ff9">2<span class="_ _0"></span><span class="ff2">，<span class="_ _17"></span><span class="ff9">3<span class="_ _5"></span><span class="ff2">］</span></span></span></span></div><div class="t m0 xc h10 y40 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xd h6 y41 ff2 fs2 fc0 sc0 ls0 ws0">小</div><div class="t m0 xe h6 y3e ff2 fs2 fc0 sc0 ls0 ws0">波<span class="_ _3"></span>变<span class="_ _8"></span>换</div><div class="t m0 x41 h11 y3f ff2 fs5 fc0 sc0 ls0 ws0">［<span class="_ _5"></span><span class="ff9">4<span class="_ _16"></span><span class="ff2">］</span></span></div><div class="t m0 x50 h10 y40 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x51 h6 y41 ff2 fs2 fc0 sc0 ls0 ws0">基</div><div class="t m0 x52 h6 y3e ff2 fs2 fc0 sc0 ls0 ws0">于<span class="_ _3"></span>人<span class="_ _8"></span>工<span class="_ _3"></span>智</div><div class="t m0 x4 h6 y42 ff2 fs2 fc0 sc0 ls0 ws0">能</div><div class="t m0 x4c h11 y43 ff2 fs5 fc0 sc0 ls0 ws0">［<span class="_ _5"></span><span class="ff9">5<span class="_ _16"></span><span class="ff2">］</span></span></div><div class="t m0 x4d h6 y44 ff2 fs2 fc0 sc0 ls5 ws0">的电机故障诊断方法</div><div class="t m0 x53 h10 y45 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x1e h6 y46 ff2 fs2 fc0 sc0 ls5 ws0">根据频谱特点的变化辨识电机故障是</div><div class="t m0 x15 h6 y47 ff2 fs2 fc0 sc0 ls5 ws0">较早<span class="_ _0"></span>研</div><div class="t m0 x4 h6 y48 ff2 fs2 fc0 sc0 ls0 ws0">究信<span class="_ _0"></span>号<span class="_ _0"></span>处理<span class="_ _8"></span>的<span class="_ _8"></span>方<span class="_ _8"></span>法</div><div class="t m0 x54 h10 y49 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x46 h6 y48 ff2 fs2 fc0 sc0 ls8 ws0">当电机发生断条故障<span class="_ _0"></span>时</div><div class="t m0 x55 h6 y49 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x56 h6 y48 ff2 fs2 fc0 sc0 ls0 ws0">在</div><div class="t m0 x57 h6 y4a ff2 fs2 fc0 sc0 ls5 ws0">电机定子绕组的电流频谱中产生</div><div class="t m0 x58 h6 y4b ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _f"> </span>±<span class="_ _18"> </span>2<span class="_ _8"></span><span class="ffb">ks<span class="_ _0"></span></span></span>）<span class="_ _7"> </span><span class="ffb">f</span></div><div class="t m0 x59 h12 y4c ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x5a h6 y4d ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 x5b h6 y4a ff2 fs2 fc0 sc0 ls0 ws0">故</div><div class="t m0 x57 h6 y4e ff2 fs2 fc0 sc0 ls0 ws0">障特<span class="_ _0"></span>征<span class="_ _0"></span>量</div><div class="t m0 x5c h6 y4f ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x5d h6 y4e ff2 fs2 fc0 sc0 ls8 ws0">故<span class="_ _15"></span>以此故障特征频率作为异步电<span class="_ _0"></span>机转</div><div class="t m0 x57 h6 y50 ff2 fs2 fc0 sc0 ls5 ws0">子断条的诊断依据</div><div class="t m0 x5e h10 y51 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x5f h6 y50 ff2 fs2 fc0 sc0 ls5 ws0">因为转差率在额定运行<span class="_ _0"></span>时<span class="_ _0"></span>通</div><div class="t m0 x57 h6 y52 ff2 fs2 fc0 sc0 ls0 ws0">常很<span class="_ _0"></span>小</div><div class="t m0 x60 h6 y53 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x61 h6 y52 ff2 fs2 fc0 sc0 ls0 ws0">故障<span class="_ _0"></span>频<span class="_ _0"></span>率</div><div class="t m0 x62 h6 y53 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _7"> </span>±<span class="_ _18"> </span>2<span class="_ _8"></span><span class="ffb">ks<span class="_ _3"></span></span></span>）<span class="_ _7"> </span><span class="ffb">f</span></div><div class="t m0 x63 h12 y54 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x64 h6 y55 ff2 fs2 fc0 sc0 ls7 ws0">很容易被基波频率</div><div class="t m0 x57 h13 y56 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 x65 h12 y57 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x66 h6 y58 ff2 fs2 fc0 sc0 ls0 ws0">淹</div><div class="t m0 x67 h6 y59 ff2 fs2 fc0 sc0 ls0 ws0">没</div><div class="t m0 x68 h6 y5a ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x69 h6 y59 ff2 fs2 fc0 sc0 ls7 ws0">所<span class="_ _15"></span>以<span class="_ _15"></span>直接对采集的定子电流直接做快速</div><div class="t m0 x57 h6 y5b ff2 fs2 fc0 sc0 ls0 ws0">傅里<span class="_ _0"></span>叶<span class="_ _0"></span>变换<span class="_ _8"></span>效<span class="_ _8"></span>果<span class="_ _8"></span>不<span class="_ _8"></span>好</div><div class="t m0 x6a h6 y5c ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x6b h6 y5b ff2 fs2 fc0 sc0 ls0 ws0">易<span class="_ _8"></span>产<span class="_ _8"></span>生<span class="_ _8"></span>误<span class="_ _8"></span>差<span class="_ _8"></span>和<span class="_ _8"></span>误<span class="_ _8"></span>断</div><div class="t m0 x6c h10 y5c ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x5a h6 y5b ff2 fs2 fc0 sc0 ls0 ws0">利<span class="_ _8"></span>用</div><div class="t m0 x57 h6 y5d ff2 fs2 fc0 sc0 ls8 ws0">连<span class="_ _15"></span>续<span class="_ _d"></span>细<span class="_ _15"></span>化的<span class="_ _15"></span>傅里叶变换分析方法</div><div class="t m0 x2 h6 y5e ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x6d h6 y5d ff2 fs2 fc0 sc0 ls0 ws0">可<span class="_ _8"></span>获<span class="_ _8"></span>得<span class="_ _8"></span>采<span class="_ _8"></span>样<span class="_ _8"></span>原</div><div class="t m0 x57 h6 y5f ff2 fs2 fc0 sc0 ls8 ws0">信<span class="_ _15"></span>号<span class="_ _d"></span>中<span class="_ _15"></span>某一<span class="_ _15"></span>主频率分量的精确分析表达式</div><div class="t m0 x6e h6 y60 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x5a h6 y5f ff2 fs2 fc0 sc0 ls0 ws0">即<span class="_ _8"></span>精</div><div class="t m0 x57 h6 y61 ff2 fs2 fc0 sc0 ls0 ws0">确的<span class="_ _0"></span>幅<span class="_ _0"></span>值</div><div class="t m0 x5c h10 y62 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x5d h6 y61 ff2 fs2 fc0 sc0 ls0 ws0">频率</div><div class="t m0 x6f h10 y62 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x70 h6 y61 ff2 fs2 fc0 sc0 ls0 ws0">初<span class="_ _8"></span>相<span class="_ _8"></span>位<span class="_ _8"></span>等<span class="_ _8"></span>信<span class="_ _0"></span>息</div><div class="t m0 x71 h6 y62 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x72 h6 y61 ff2 fs2 fc0 sc0 ls0 ws0">从<span class="_ _8"></span>而<span class="_ _8"></span>避<span class="_ _8"></span>免<span class="_ _3"></span>故<span class="_ _8"></span>障<span class="_ _8"></span>频</div><div class="t m0 x57 h6 y63 ff2 fs2 fc0 sc0 ls5 ws0">率易被淹没的问题</div><div class="t m0 x73 h11 y64 ff2 fs5 fc0 sc0 ls0 ws0">［<span class="_ _5"></span><span class="ff9">6<span class="_ _16"></span><span class="ff2">］</span></span></div><div class="t m0 x74 h10 y65 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 xb h6 y66 ff2 fs2 fc0 sc0 ls0 ws0">另</div><div class="t m0 x60 h6 y67 ff2 fs2 fc0 sc0 ls0 ws0">一种<span class="_ _0"></span>改<span class="_ _0"></span>进<span class="_ _0"></span>方<span class="_ _8"></span>法</div><div class="t m0 x74 h6 y68 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x75 h6 y67 ff2 fs2 fc0 sc0 ls7 ws0">是对采集的定子电流信号</div><div class="t m0 x57 h6 y69 ff2 fs2 fc0 sc0 ls0 ws0">进行<span class="_ _0"></span>计<span class="_ _0"></span>算处<span class="_ _0"></span>理</div><div class="t m0 x76 h6 y6a ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x6f h6 y69 ff2 fs2 fc0 sc0 ls0 ws0">使<span class="_ _8"></span>故<span class="_ _8"></span>障<span class="_ _8"></span>频<span class="_ _8"></span>率</div><div class="t m0 x77 h6 y6a ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _7"> </span>±<span class="_ _2"> </span>2<span class="_ _0"></span><span class="ffb">ks<span class="_ _8"></span></span></span>）<span class="_ _11"> </span><span class="ffb">f</span></div><div class="t m0 x78 h12 y6b ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x79 h6 y6c ff2 fs2 fc0 sc0 ls0 ws0">转</div><div class="t m0 x6c h6 y69 ff2 fs2 fc0 sc0 ls0 ws0">化<span class="_ _8"></span>并<span class="_ _8"></span>放</div><div class="t m0 x57 h6 y6d ff2 fs2 fc0 sc0 ls9 ws0">大<span class="_ _15"></span>为<span class="_ _16"></span>更易检测和分离<span class="lsa">的其他特征故障频率</span></div><div class="t m0 x7a h11 y6e ff2 fs5 fc0 sc0 ls0 ws0">［<span class="_ _5"></span><span class="ff9">7<span class="_ _0"></span>-<span class="_ _5"></span>9<span class="_ _5"></span><span class="ff2">］</span></span></div><div class="t m0 x7b h10 y6f ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x57 h6 y70 ff2 fs2 fc0 sc0 ls0 ws0">文</div><div class="t m0 x7c h6 y71 ff2 fs2 fc0 sc0 ls0 ws0">献</div><div class="t m0 x7d h6 y72 ff2 fs2 fc0 sc0 ls0 ws0">［<span class="_ _17"></span><span class="ff9">10<span class="_ _16"></span><span class="ff2">］</span></span></div><div class="t m0 x7e h6 y71 ff2 fs2 fc0 sc0 lsb ws0">通过采集的定子电压和电流乘<span class="_ _0"></span>积得到</div><div class="t m0 x57 h6 y73 ff2 fs2 fc0 sc0 ls0 ws0">的单<span class="_ _0"></span>相<span class="_ _0"></span>瞬时<span class="_ _0"></span>功<span class="_ _8"></span>率</div><div class="t m0 x70 h6 y74 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x62 h6 y73 ff2 fs2 fc0 sc0 ls8 ws0">提取出转子断条故障时瞬时功</div><div class="t m0 x57 h6 y75 ff2 fs2 fc0 sc0 ls0 ws0">率故<span class="_ _0"></span>障<span class="_ _0"></span>频<span class="_ _0"></span>率</div><div class="t m0 x7f hf y76 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">ksf</span></div><div class="t m0 x80 h12 y77 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x81 h6 y78 ffc fs2 fc0 sc0 ls0 ws0">、<span class="_ _19"></span><span class="ff2">（<span class="_ _f"> </span><span class="ff9">2<span class="_ _7"> </span>±<span class="_ _10"> </span>2<span class="_ _0"></span><span class="ffb">ks<span class="_ _3"></span></span></span>）<span class="_ _11"> </span><span class="ffb">f</span></span></div><div class="t m0 x82 h12 y77 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x83 h6 y78 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x21 h6 y79 ff2 fs2 fc0 sc0 ls0 ws0">以</div><div class="t m0 x84 h6 y7a ff2 fs2 fc0 sc0 ls0 ws0">故<span class="_ _3"></span>障<span class="_ _3"></span>频<span class="_ _3"></span>率</div><div class="t m0 x5a hf y7b ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">ksf</span></div><div class="t m0 x85 h12 y77 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x86 h9 y7c ffa fs0 fc0 sc0 ls0 ws0">—<span class="_ _1a"></span><span class="ff9">3<span class="_ _1b"></span>4<span class="_ _1a"></span><span class="ffa">—</span></span></div></div><div class="pi" data-data='{"ctm":[1.612022,0.000000,0.000000,1.612022,0.000000,0.000000]}'></div></div>
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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/6247252562b5053d3c4a72b7/bg2.jpg"><div class="t m0 x4 h2 y7d ff3 fs0 fc0 sc0 ls0 ws0">运</div><div class="t m0 x4c h2 y3 ff3 fs0 fc0 sc0 ls0 ws0">行与<span class="_ _0"></span>保<span class="_ _0"></span>护<span class="ff4 fc1"></span></div><div class="t m1 x87 h4 y5 ff5 fs2 fc2 sc0 ls0 ws0">E<span class="_ _4"></span>M<span class="_ _5"></span>C<span class="_ _4"></span>A</div><div class="t m0 x88 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">2014<span class="_ _0"></span><span class="ff2">，<span class="_ _1"></span><span class="ff1">41<span class="_ _0"></span><span class="ff2">（<span class="_ _2"> </span></span>7</span></span></div><div class="t m0 x4 h3 y4 ff4 fs1 fc0 sc0 ls1 ws0"></div><div class="t m0 x89 h2 y1 ff2 fs0 fc0 sc0 ls0 ws0">）</div><div class="t m0 x4 h6 y7e ff2 fs2 fc0 sc0 ls8 ws0">为</div><div class="t m0 x42 h6 y7f ff2 fs2 fc0 sc0 ls8 ws0">断<span class="_ _15"></span>条<span class="_ _d"></span>故<span class="_ _15"></span>障特征频率可有效诊断转子断条故障</div><div class="t m0 x9 h10 y80 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x4 h6 y81 ff2 fs2 fc0 sc0 ls0 ws0">文献</div><div class="t m0 x8a h6 y82 ff2 fs2 fc0 sc0 ls0 ws0">［<span class="_ _17"></span><span class="ff9">11<span class="_ _16"></span><span class="ff2">］</span></span></div><div class="t m0 x4a h6 y81 ff2 fs2 fc0 sc0 lsb ws0">在三相平均瞬时功率中提取故障<span class="_ _0"></span>频率</div><div class="t m0 x3a hf y83 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">ksf</span></div><div class="t m0 x43 h12 y84 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x8b h6 y85 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x8c h6 y86 ff2 fs2 fc0 sc0 ls7 ws0">由</div><div class="t m0 x8d h6 y87 ff2 fs2 fc0 sc0 ls7 ws0">于<span class="_ _15"></span>三<span class="_ _15"></span>相平<span class="_ _15"></span>均瞬时功率只含有惟一特征频</div><div class="t m0 x4 h6 y88 ff2 fs2 fc0 sc0 ls0 ws0">率</div><div class="t m0 x8e hf y89 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">ksf</span></div><div class="t m0 x8f h12 y8a ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x90 h6 y8b ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x12 h6 y8c ff2 fs2 fc0 sc0 lsb ws0">故</div><div class="t m0 x38 h6 y88 ff2 fs2 fc0 sc0 lsb ws0">其特征频率幅值更集<span class="_ _0"></span>中</div><div class="t m0 x50 h6 y89 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x51 h6 y88 ff2 fs2 fc0 sc0 ls0 ws0">检<span class="_ _3"></span>测<span class="_ _8"></span>效<span class="_ _3"></span>果<span class="_ _3"></span>更</div><div class="t m0 x4 h6 y8d ff2 fs2 fc0 sc0 ls0 ws0">好</div><div class="t m0 x42 h10 y8e ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x1e h6 y8d ff2 fs2 fc0 sc0 ls0 ws0">文献</div><div class="t m0 x91 h6 y8e ff2 fs2 fc0 sc0 ls0 ws0">［<span class="_ _17"></span><span class="ff9">12<span class="_ _0"></span><span class="ff2">，<span class="_ _1c"></span><span class="ff9">13<span class="_ _16"></span><span class="ff2">］</span></span></span></span></div><div class="t m0 x4f h6 y8d ff2 fs2 fc0 sc0 ls8 ws0">利<span class="_ _15"></span>用两相坐标系中瞬时无功功</div><div class="t m0 x4 h6 y8f ff2 fs2 fc0 sc0 ls0 ws0">率的<span class="_ _0"></span>概<span class="_ _0"></span>念</div><div class="t m0 x3d h6 y90 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x1f h6 y8f ff2 fs2 fc0 sc0 ls8 ws0">在<span class="_ _15"></span>定子瞬时无功功率中提取转子断<span class="_ _0"></span>条</div><div class="t m0 x4 h6 y91 ff2 fs2 fc0 sc0 ls0 ws0">特征<span class="_ _0"></span>故<span class="_ _0"></span>障频<span class="_ _0"></span>率</div><div class="t m0 x92 hf y92 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">ksf</span></div><div class="t m0 x93 h12 y93 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x94 h6 y94 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x95 h6 y95 ff2 fs2 fc0 sc0 lsc ws0">从而取得和三相瞬</div><div class="t m0 x96 h6 y96 ff2 fs2 fc0 sc0 lsc ws0">时功率<span class="_ _0"></span>故</div><div class="t m0 x4 h6 y97 ff2 fs2 fc0 sc0 ls0 ws0">障诊<span class="_ _0"></span>断<span class="_ _0"></span>相当<span class="_ _8"></span>的<span class="_ _8"></span>效<span class="_ _8"></span>果</div><div class="t m0 x54 h10 y98 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x46 h6 y97 ff2 fs2 fc0 sc0 ls8 ws0">本文根据瞬时功率的<span class="_ _0"></span>启示</div><div class="t m0 x9 h6 y98 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x4 h6 y99 ff2 fs2 fc0 sc0 ls8 ws0">提<span class="_ _15"></span>出<span class="_ _d"></span>了<span class="_ _15"></span>流方<span class="_ _15"></span>的概念和基于流方的故障诊断方法</div><div class="t m0 x9 h6 y9a ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x4 h6 y9b ff2 fs2 fc0 sc0 ls5 ws0">提取转子断条故<span class="_ _0"></span>障<span class="_ _0"></span>特<span class="_ _0"></span>征<span class="_ _0"></span>频<span class="_ _0"></span>率</div><div class="t m0 x97 hf y9c ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">ksf</span></div><div class="t m0 x41 h12 y9d ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x98 h10 y9e ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x99 h6 y9f ff2 fs2 fc0 sc0 ls0 ws0">转</div><div class="t m0 x9a h6 ya0 ff2 fs2 fc0 sc0 ls0 ws0">子<span class="_ _0"></span>偏<span class="_ _8"></span>心<span class="_ _8"></span>故<span class="_ _8"></span>障</div><div class="t m0 x4 h6 ya1 ff2 fs2 fc0 sc0 ls0 ws0">频率</div><div class="t m0 x9b h13 ya2 ffb fs2 fc0 sc0 ls0 ws0">mf</div><div class="t m0 x9c h12 ya3 ff9 fs5 fc0 sc0 ls0 ws0">r</div><div class="t m0 x9d h6 ya4 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x9e h6 ya5 ff2 fs2 fc0 sc0 ls8 ws0">对</div><div class="t m0 x9f h6 ya6 ff2 fs2 fc0 sc0 ls8 ws0">比<span class="_ _15"></span>瞬时功率的诊断方法</div><div class="t m0 x2b h6 ya7 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x9a h6 ya6 ff2 fs2 fc0 sc0 ls0 ws0">其<span class="_ _8"></span>无<span class="_ _8"></span>须<span class="_ _8"></span>采<span class="_ _8"></span>集</div><div class="t m0 x4 h6 ya8 ff2 fs2 fc0 sc0 ls0 ws0">定子<span class="_ _0"></span>电<span class="_ _0"></span>压</div><div class="t m0 x3d h6 ya9 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x1f h6 ya8 ff2 fs2 fc0 sc0 ls8 ws0">只须检测定子电流</div><div class="t m0 xa0 h6 ya9 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x48 h6 ya8 ff2 fs2 fc0 sc0 ls0 ws0">硬<span class="_ _8"></span>件<span class="_ _8"></span>开<span class="_ _8"></span>销<span class="_ _8"></span>更<span class="_ _3"></span>小</div><div class="t m0 x55 h6 ya9 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x56 h6 ya8 ff2 fs2 fc0 sc0 ls0 ws0">接</div><div class="t m0 x4 h6 yaa ff2 fs2 fc0 sc0 ls0 ws0">线更<span class="_ _0"></span>简<span class="_ _0"></span>单</div><div class="t m0 x3d h6 yab ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x1f h6 yaa ff2 fs2 fc0 sc0 ls5 ws0">更利于在线故障诊断</div><div class="t m0 x40 h10 yab ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x3a hd yac ff9 fs4 fc0 sc0 ls0 ws0">1</div><div class="t m0 x9b he yad ff6 fs4 fc0 sc0 lsd ws0">基于单相流方的转</div><div class="t m0 x49 he yae ff6 fs4 fc0 sc0 lsd ws0">子断条<span class="_ _0"></span>故障</div><div class="t m0 x9b he yaf ff6 fs4 fc0 sc0 ls0 ws0">诊<span class="_ _0"></span>断</div><div class="t m0 x3a h14 yb0 ff1 fs2 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span>1</div><div class="t m0 x8c h6 yb1 ff3 fs2 fc0 sc0 ls8 ws0">基</div><div class="t m0 x8d h6 yb2 ff3 fs2 fc0 sc0 ls8 ws0">于<span class="_ _15"></span>单相流方的转子断条故障特征频率<span class="_ _0"></span>的</div><div class="t m0 x8c h6 yb3 ff3 fs2 fc0 sc0 ls0 ws0">提取</div><div class="t m0 x1e h6 yb4 ff2 fs2 fc0 sc0 ls5 ws0">转子断条故障边频分量</div><div class="t m0 xa1 h6 yb5 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _f"> </span>±<span class="_ _18"> </span>2<span class="_ _0"></span><span class="ffb">ks<span class="_ _8"></span></span></span>）<span class="_ _f"> </span><span class="ffb">f</span></div><div class="t m0 xa2 h12 yb6 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x96 h6 yb7 ff2 fs2 fc0 sc0 ls0 ws0">易</div><div class="t m0 x15 h6 yb4 ff2 fs2 fc0 sc0 ls0 ws0">被<span class="_ _0"></span>基<span class="_ _0"></span>频</div><div class="t m0 x4 h13 yb8 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 xa3 h12 yb9 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x4c h6 yba ff2 fs2 fc0 sc0 ls0 ws0">淹</div><div class="t m0 x8b h6 ybb ff2 fs2 fc0 sc0 ls0 ws0">没</div><div class="t m0 xa4 h6 yb8 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x8d h6 ybb ff2 fs2 fc0 sc0 ls5 ws0">且故障发生的初始阶段故障<span class="_ _0"></span>信<span class="_ _0"></span>号偏<span class="_ _0"></span>弱</div><div class="t m0 x55 h6 yb8 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x56 h6 ybb ff2 fs2 fc0 sc0 ls0 ws0">故</div><div class="t m0 x4 h6 ybc ff2 fs2 fc0 sc0 ls5 ws0">直接对电机定子电流频谱分析很难提取故障特<span class="_ _0"></span>征</div><div class="t m0 x4 h6 ybd ff2 fs2 fc0 sc0 ls0 ws0">信号</div><div class="t m0 x1e h10 ybe ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x3b h6 ybd ff2 fs2 fc0 sc0 ls5 ws0">为了放大故障频率信号以及把故障信号<span class="_ _0"></span>和</div><div class="t m0 x4 h6 ybf ff2 fs2 fc0 sc0 ls0 ws0">基频<span class="_ _0"></span>分<span class="_ _0"></span>离出<span class="_ _0"></span>来</div><div class="t m0 x45 h6 yc0 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 xa5 h6 ybf ff2 fs2 fc0 sc0 ls0 ws0">通过<span class="_ _0"></span>研<span class="_ _0"></span>究发<span class="_ _0"></span>现</div><div class="t m0 xa6 h6 yc0 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x23 h6 ybf ff2 fs2 fc0 sc0 ls0 ws0">电机<span class="_ _0"></span>定<span class="_ _0"></span>子电<span class="_ _0"></span>流<span class="_ _0"></span>自<span class="_ _0"></span>平</div><div class="t m0 x4 h6 yc1 ff2 fs2 fc0 sc0 ls0 ws0">方后</div><div class="t m0 x1e h6 yc2 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 xa7 h6 yc1 ff2 fs2 fc0 sc0 ls5 ws0">可以放大和转移特征故障频率</div><div class="t m0 xa8 h10 yc2 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x1e h6 yc3 ff2 fs2 fc0 sc0 ls0 ws0">类<span class="_ _3"></span>比<span class="_ _1d"> </span>瞬<span class="_ _1d"></span>时<span class="_ _1e"></span>功<span class="_ _1e"></span>率</div><div class="t m0 xa9 h6 yc4 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 xaa h6 yc3 ff2 fs2 fc0 sc0 lse ws0">定义一个新的物理量</div><div class="t m0 xab h10 yc4 ffa fs2 fc0 sc0 ls0 ws0">“</div><div class="t m0 x56 h6 yc3 ff2 fs2 fc0 sc0 ls0 ws0">流</div><div class="t m0 x4 h6 yc5 ff2 fs2 fc0 sc0 ls0 ws0">方</div><div class="t m0 x42 h6 yc6 ffc fs2 fc0 sc0 ls0 ws0">”<span class="_ _19"></span><span class="ff2">，</span></div><div class="t m0 x4d h6 yc5 ff2 fs2 fc0 sc0 ls0 ws0">其表<span class="_ _0"></span>示</div><div class="t m0 x20 h13 yc6 ffb fs2 fc0 sc0 ls0 ws0">n</div><div class="t m0 xac h6 yc5 ff2 fs2 fc0 sc0 ls5 ws0">个故障电流自相乘</div><div class="t m0 xad h6 yc6 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x2a h6 yc5 ff2 fs2 fc0 sc0 ls0 ws0">用字<span class="_ _0"></span>母</div><div class="t m0 x2d h13 yc6 ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 xae h6 yc5 ff2 fs2 fc0 sc0 ls0 ws0">表示</div><div class="t m0 x9 h6 yc6 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x4 h6 yc7 ff2 fs2 fc0 sc0 ls5 ws0">则单相流方表示为</div><div class="t m0 x4f h6 yc8 ffb fs2 fc0 sc0 ls0 ws0">q<span class="_ _0"></span><span class="ff2">（<span class="_ _f"> </span></span>t<span class="_ _0"></span><span class="ff2">）<span class="_ _1f"> </span></span>=<span class="_ _a"> </span>i<span class="ff2">（<span class="_ _f"> </span></span>t<span class="_ _0"></span><span class="ff2">）</span></div><div class="t m0 xaf h15 yc9 ffb fs5 fc0 sc0 ls0 ws0">n</div><div class="t m0 xb0 h6 yca ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _0"></span></span>）</div><div class="t m0 x1e h6 ycb ff2 fs2 fc0 sc0 ls0 ws0">首</div><div class="t m0 x3b h6 ycc ff2 fs2 fc0 sc0 ls0 ws0">先</div><div class="t m0 x3d h6 ycd ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x1f h6 ycc ff2 fs2 fc0 sc0 ls0 ws0">讨论</div><div class="t m0 xb1 hf ycd ffb fs2 fc0 sc0 ls0 ws0">n<span class="_ _10"> </span><span class="ff9">=<span class="_ _18"> </span>2</span></div><div class="t m0 x46 h6 ycc ff2 fs2 fc0 sc0 ls0 ws0">无<span class="_ _8"></span>故<span class="_ _8"></span>障<span class="_ _8"></span>状<span class="_ _8"></span>态<span class="_ _8"></span>下</div><div class="t m0 x2b h6 ycd ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x9a h6 ycc ff2 fs2 fc0 sc0 ls0 ws0">电<span class="_ _8"></span>机<span class="_ _8"></span>的<span class="_ _3"></span>单<span class="_ _8"></span>相</div><div class="t m0 x4 h6 yce ff2 fs2 fc0 sc0 ls0 ws0">定子<span class="_ _0"></span>流<span class="_ _0"></span>方为</div><div class="t m0 xb2 h6 ycf ffb fs2 fc0 sc0 ls0 ws0">q<span class="_ _0"></span><span class="ff2">（<span class="_ _f"> </span></span>t<span class="_ _0"></span><span class="ff2">）<span class="_ _1f"> </span></span>=</div><div class="t m0 x1 h13 yd0 ffb fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 xb3 h12 yd1 ff9 fs5 fc0 sc0 ls0 ws0">2</div><div class="t m0 x14 hf yd2 ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 x4f h6 yd3 ff2 fs2 fc0 sc0 ls0 ws0">［<span class="_ _17"></span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">+<span class="_ _7"> </span></span>co<span class="_ _0"></span>s<span class="_ _0"></span><span class="ff2">（<span class="_ _10"> </span></span>2</span></div><div class="t m0 xa6 h16 yd4 ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x31 h12 yd5 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xb4 hf yd6 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－<span class="_ _10"> </span><span class="ff9">2</span></div><div class="t m0 xb5 h16 yd7 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xb6 h6 yd6 ff2 fs2 fc0 sc0 ls0 ws0">）</div><div class="t m0 xb7 h6 yd8 ff2 fs2 fc0 sc0 ls0 ws0">］<span class="_ _20"> </span>（<span class="_ _10"> </span><span class="ff9">2<span class="_ _0"></span></span>）</div><div class="t m0 x4 h6 yd9 ff2 fs2 fc0 sc0 lsf ws0">此</div><div class="t m0 x42 h6 yda ff2 fs2 fc0 sc0 lsf ws0">量<span class="_ _5"></span>包含一个恒定直流分量和一个频率为</div><div class="t m0 xb8 hf ydb ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">f</span></div><div class="t m0 xb9 h12 ydc ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x4 h6 ydd ff2 fs2 fc0 sc0 ls0 ws0">分</div><div class="t m0 x42 h6 yde ff2 fs2 fc0 sc0 ls0 ws0">量</div><div class="t m0 x1e h10 ydf ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x1e h6 ye0 ff2 fs2 fc0 sc0 ls0 ws0">发生<span class="_ _0"></span>故<span class="_ _0"></span>障时</div><div class="t m0 x14 h6 ye1 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x44 h6 ye0 ff2 fs2 fc0 sc0 ls5 ws0">定子三相电流可表示为</div><div class="t m0 x1e h13 ye2 ffb fs2 fc0 sc0 ls0 ws0">i</div><div class="t m0 xba h12 ye3 ff9 fs5 fc0 sc0 ls0 ws0">a</div><div class="t m0 x90 h13 ye4 ffb fs2 fc0 sc0 ls0 ws0">=<span class="_ _a"> </span>I</div><div class="t m0 x1f h12 ye3 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xbb h6 ye4 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s<span class="ff2">（<span class="_ _10"> </span></span>2</div><div class="t m0 xb3 h17 ye5 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 x30 h13 ye4 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 xbc h12 ye3 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x95 h13 ye4 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xbd h16 ye5 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xbe h6 ye4 ff2 fs2 fc0 sc0 ls0 ws0">）<span class="_ _13"> </span><span class="ffb">+<span class="_ _7"> </span>I</span></div><div class="t m0 xbf h18 ye6 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xc0 h12 ye7 ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 xad h6 ye4 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s<span class="ff2">［</span></div><div class="t m0 x7 h6 ye8 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">+</span></span></div><div class="t m0 x9e h6 ye9 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s<span class="_ _0"></span><span class="ff2">）<span class="_ _10"> </span></span></span>2</div><div class="t m0 xa5 h17 yea ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 xb3 h13 ye9 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 x44 h12 yeb ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xc1 h13 yec ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xc h16 yed ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xc2 h18 yee ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xc3 h12 yef ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 xe h6 yec ff2 fs2 fc0 sc0 ls0 ws0">］<span class="_ _1e"></span><span class="ffb">+<span class="_ _f"> </span>I</span></div><div class="t m0 x24 h18 yee ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xc4 h12 yef ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x98 h6 yec ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s<span class="ff2">［</span></div><div class="t m0 xa2 h6 ye9 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">－</span></span></div><div class="t m0 x9e h6 yf0 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s<span class="_ _0"></span><span class="ff2">）<span class="_ _10"> </span></span></span>2</div><div class="t m0 xa5 h17 yf1 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 xb3 h13 yf0 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 x44 h12 yf2 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xc1 h13 yf3 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xc h16 yf4 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xc2 h18 yf5 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xc3 h12 yf6 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 xe h6 yf3 ff2 fs2 fc0 sc0 ls0 ws0">］</div><div class="t m0 x4 h13 yf7 ffb fs2 fc0 sc0 ls0 ws0">i</div><div class="t m0 xa3 h12 yf8 ff9 fs5 fc0 sc0 ls0 ws0">b</div><div class="t m0 x8e h13 yf9 ffb fs2 fc0 sc0 ls0 ws0">=<span class="_ _a"> </span>I</div><div class="t m0 xa7 h12 yf8 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xa4 hf yf9 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s</div><div class="t m0 xc5 hf yfa ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 x20 h17 yfb ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 x45 h13 yfa ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 x13 h12 yfc ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xc6 h13 yfd ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 x94 h16 yfe ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xaa h13 yfd ffb fs2 fc0 sc0 ls0 ws0">－</div><div class="t m0 xc2 hf yff ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 xc7 h17 y100 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m2 x6 h19 y101 fff fs6 fc0 sc0 ls0 ws0">(</div><div class="t m2 xc8 h19 y102 fff fs6 fc0 sc0 ls0 ws0">)</div><div class="t m0 x26 hf y103 ff9 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 xc9 h13 y104 ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xca h13 y105 ffb fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 xa7 h18 y106 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xa4 h12 y107 ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 x9d hf y108 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s</div><div class="t m0 x3f h6 y109 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">+<span class="_ _10"> </span></span>2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s</span></span>）<span class="_ _10"> </span><span class="ff9">2</span></div><div class="t m0 xbd h17 y10a ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 xbe h13 y109 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 x29 h12 y10b ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xcb h13 y10c ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 x31 h16 y10d ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xc4 h18 y10e ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xcc h12 y10f ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 x50 h13 y10c ffb fs2 fc0 sc0 ls0 ws0">－</div><div class="t m0 x7 hf y110 ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 xcd h17 y111 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m2 x3e h19 y112 fff fs6 fc0 sc0 ls0 ws0">[</div><div class="t m2 xce h19 y113 fff fs6 fc0 sc0 ls0 ws0">]</div><div class="t m0 xa2 hf y114 ff9 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 x4b h13 y115 ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xca h13 y116 ffb fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 xa7 h18 y117 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xa4 h12 y118 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x9d hf y119 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s</div><div class="t m0 x3f h6 y11a ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">－<span class="_ _10"> </span></span>2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s</span></span>）<span class="_ _10"> </span><span class="ff9">2</span></div><div class="t m0 xbd h17 y11b ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 xbe h13 y11a ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 x29 h12 y11c ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xcb h13 y11d ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 x31 h16 y11e ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xc4 h18 y11f ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xcc h12 y120 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x50 h13 y11d ffb fs2 fc0 sc0 ls0 ws0">－</div><div class="t m0 x7 hf y121 ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 xcd h17 y122 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m2 x3e h19 y123 fff fs6 fc0 sc0 ls0 ws0">[</div><div class="t m2 xce h19 y124 fff fs6 fc0 sc0 ls0 ws0">]</div><div class="t m0 xa2 hf y125 ff9 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 x57 h13 y126 ffb fs2 fc0 sc0 ls0 ws0">i</div><div class="t m0 x65 h12 y127 ff9 fs5 fc0 sc0 ls0 ws0">c</div><div class="t m0 xcf h13 y128 ffb fs2 fc0 sc0 ls0 ws0">=<span class="_ _a"> </span>I</div><div class="t m0 x18 h12 y127 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x68 hf y128 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s</div><div class="t m0 xd0 hf y129 ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 x7f h17 y12a ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 x76 h13 y129 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 xd1 h12 y12b ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xd2 h13 y12c ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xd3 h16 y12d ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xd4 h13 y12c ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xd5 hf y12e ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 xd6 h17 y12f ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m2 xd7 h19 y130 fff fs6 fc0 sc0 ls0 ws0">(</div><div class="t m2 xd8 h19 y131 fff fs6 fc0 sc0 ls0 ws0">)</div><div class="t m0 xd9 hf y132 ff9 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 xda h13 y133 ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xdb h13 y134 ffb fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 x18 h18 y135 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x68 h12 y136 ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 x61 hf y134 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s</div><div class="t m0 xdc h6 y137 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">+<span class="_ _10"> </span></span>2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s</span></span>）<span class="_ _10"> </span><span class="ff9">2</span></div><div class="t m0 xdd h17 y138 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 xde h13 y137 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 xdf h12 y139 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x1c h13 y13a ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xe0 h16 y13b ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x72 h18 y13c ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xe1 h12 y13d ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 x3 h13 y13a ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xe2 hf y13e ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 x88 h17 y13f ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m2 xe3 h19 y140 fff fs6 fc0 sc0 ls0 ws0">[</div><div class="t m2 xe4 h19 y141 fff fs6 fc0 sc0 ls0 ws0">]</div><div class="t m0 xe5 hf y142 ff9 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 xe6 h13 y143 ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xdb h13 y144 ffb fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 x18 h18 y145 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x68 h12 y146 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x61 hf y147 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s</div><div class="t m0 xdc h6 y148 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">－<span class="_ _10"> </span></span>2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s</span></span>）<span class="_ _10"> </span><span class="ff9">2</span></div><div class="t m0 xdd h17 y149 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m0 xde h13 y148 ffb fs2 fc0 sc0 ls0 ws0">f</div><div class="t m0 xdf h12 y14a ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x1c h13 y14b ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xe0 h16 y14c ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x72 h18 y14d ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xe1 h12 y14e ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x3 h13 y14b ffb fs2 fc0 sc0 ls0 ws0">+</div><div class="t m0 xe2 hf y14f ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 x88 h17 y150 ffe fs2 fc0 sc0 ls0 ws0">π</div><div class="t m2 xe3 h19 y151 fff fs6 fc0 sc0 ls0 ws0">[</div><div class="t m2 xe4 h19 y152 fff fs6 fc0 sc0 ls0 ws0">]</div><div class="t m0 xe5 hf y153 ff9 fs2 fc0 sc0 ls0 ws0">3</div><div class="t m0 xe7 h6 y154 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">3<span class="_ _0"></span></span>）</div><div class="t m0 x57 h6 y155 ff2 fs2 fc0 sc0 ls0 ws0">式</div><div class="t m0 x7c h6 y156 ff2 fs2 fc0 sc0 ls0 ws0">中</div><div class="t m0 xb h6 y157 ff2 fs2 fc0 sc0 ls0 ws0">：<span class="_ _21"> </span><span class="ffb">I</span></div><div class="t m0 xe8 h18 y158 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xe9 h12 y159 ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 xd7 h10 y15a ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xd0 h16 y15b ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xea h18 y158 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xeb h12 y159 ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 xec h1a y15a ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 x80 h1a y15c ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 xed h6 y15d ff2 fs2 fc0 sc0 ls0 ws0">故</div><div class="t m0 xee h6 y156 ff2 fs2 fc0 sc0 ls0 ws0">障频<span class="_ _0"></span>率</div><div class="t m0 xef h6 y157 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _f"> </span>+<span class="_ _18"> </span>2<span class="_ _8"></span><span class="ffb">ks<span class="_ _8"></span></span></span>）<span class="_ _7"> </span><span class="ffb">f</span></div><div class="t m0 xf0 h12 y15e ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xf1 h6 y15f ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 xf2 h6 y156 ff2 fs2 fc0 sc0 ls0 ws0">幅<span class="_ _0"></span>值</div><div class="t m0 x7b h10 y157 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xed h6 y160 ff2 fs2 fc0 sc0 ls0 ws0">初相<span class="_ _0"></span>位</div><div class="t m0 xf3 h6 y161 ff2 fs2 fc0 sc0 ls0 ws0">；</div><div class="t m0 x10 h13 y162 ffb fs2 fc0 sc0 ls0 ws0">I</div><div class="t m0 xe8 h18 y163 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xe9 h12 y164 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 xd7 h10 y165 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xd0 h16 y166 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xea h18 y163 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xeb h12 y164 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 xec h1a y165 ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 x80 h1a y167 ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 xed h6 y168 ff2 fs2 fc0 sc0 ls0 ws0">故</div><div class="t m0 xee h6 y169 ff2 fs2 fc0 sc0 ls0 ws0">障<span class="_ _0"></span>频<span class="_ _0"></span>率</div><div class="t m0 xef h6 y16a ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _f"> </span>－<span class="_ _18"> </span>2<span class="_ _8"></span><span class="ffb">ks<span class="_ _0"></span></span></span>）<span class="_ _7"> </span><span class="ffb">f</span></div><div class="t m0 xf0 h12 y16b ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xf1 h6 y16c ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 xf2 h6 y169 ff2 fs2 fc0 sc0 ls0 ws0">幅<span class="_ _0"></span>值</div><div class="t m0 x7b h10 y16a ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xed h6 y16d ff2 fs2 fc0 sc0 ls0 ws0">初相<span class="_ _0"></span>位</div><div class="t m0 xf3 h10 y16e ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 xb h6 y16f ff2 fs2 fc0 sc0 ls0 ws0">由算<span class="_ _0"></span>式</div><div class="t m0 xf4 h6 y170 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _0"></span></span>）</div><div class="t m0 xd2 h6 y16f ff2 fs2 fc0 sc0 ls5 ws0">得断条故障时的单相流方为</div><div class="t m0 x57 h6 y171 ffb fs2 fc0 sc0 ls0 ws0">q<span class="_ _0"></span><span class="ff2">（<span class="_ _f"> </span></span>t<span class="_ _0"></span><span class="ff2">）<span class="_ _1f"> </span></span>=<span class="_ _a"> </span><span class="ff2">｛<span class="_ _2"> </span></span>I</div><div class="t m0 xf5 h12 y172 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xd0 h6 y173 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s<span class="ff2">（</span></div><div class="t m0 xd2 h16 y174 ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x81 h12 y172 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xf6 h13 y173 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 xd4 h16 y174 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x1b h6 y173 ff2 fs2 fc0 sc0 ls0 ws0">）<span class="_ _13"> </span><span class="ffb">+<span class="_ _7"> </span>I</span></div><div class="t m0 x1d h18 y175 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x82 h12 y176 ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 xf7 h6 y173 ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s<span class="ff2">［</span></div><div class="t m0 xf8 h6 y177 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">+</span></span></div><div class="t m0 x69 h6 y178 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s<span class="_ _0"></span><span class="ff2">）</span></span></div><div class="t m0 x7f h16 y179 ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x76 h12 y17a ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xec h13 y17b ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 x73 h16 y17c ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xf9 h18 y17d ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x5f h12 y17e ff9 fs5 fc0 sc0 ls0 ws0">p1</div><div class="t m0 xee h6 y17b ff2 fs2 fc0 sc0 ls0 ws0">］<span class="_ _1e"></span><span class="ffb">+<span class="_ _f"> </span>I</span></div><div class="t m0 xfa h18 y17d ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 xfb h12 y17e ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x83 h6 y17b ff9 fs2 fc0 sc0 ls0 ws0">c<span class="_ _0"></span>o<span class="_ _0"></span>s<span class="ff2">［</span></div><div class="t m0 x25 h6 y178 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">1<span class="_ _11"> </span><span class="ffb">－</span></span></div><div class="t m0 x69 h6 y17f ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s<span class="_ _0"></span><span class="ff2">）</span></span></div><div class="t m0 x7f h16 y180 ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x76 h12 y181 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xec h13 y182 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>－</div><div class="t m0 x73 h16 y183 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xf9 h18 y184 ffe fs5 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x5f h12 y185 ff9 fs5 fc0 sc0 ls0 ws0">n1</div><div class="t m0 x75 h6 y182 ff2 fs2 fc0 sc0 ls0 ws0">］</div><div class="t m0 xdd h6 y17f ff2 fs2 fc0 sc0 ls0 ws0">｝</div><div class="t m0 xfc h12 y186 ff9 fs5 fc0 sc0 ls0 ws0">2</div><div class="t m0 xe7 h6 y182 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">4<span class="_ _0"></span></span>）</div><div class="t m0 xb h6 y187 ff2 fs2 fc0 sc0 ls0 ws0">式</div><div class="t m0 x60 h6 y188 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">4<span class="_ _0"></span></span>）</div><div class="t m0 xfd h6 y187 ff2 fs2 fc0 sc0 ls5 ws0">化简并同频率合并后为</div><div class="t m0 x57 h6 y189 ffb fs2 fc0 sc0 ls0 ws0">q<span class="_ _0"></span><span class="ff2">（<span class="_ _f"> </span></span>t<span class="_ _0"></span><span class="ff2">）<span class="_ _1f"> </span></span>=<span class="_ _a"> </span>q</div><div class="t m0 xfe h12 y18a ff9 fs5 fc0 sc0 ls0 ws0">0</div><div class="t m0 xd7 h6 y18b ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ff9">c<span class="_ _8"></span>o<span class="_"> </span>s</span></div><div class="t m0 x70 h16 y18c ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xf6 h12 y18a ff9 fs5 fc0 sc0 ls0 ws0">0</div><div class="t m0 xff h13 y18b ffb fs2 fc0 sc0 ls0 ws0">+<span class="_ _f"> </span>q</div><div class="t m0 x1b h12 y18a ff9 fs5 fc0 sc0 ls0 ws0">2</div><div class="t m0 xdd h6 y18b ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ff9">c<span class="_ _8"></span>o<span class="_"> </span>s<span class="_ _0"></span></span>（<span class="_ _10"> </span><span class="ff9">2</span></div><div class="t m0 xe1 h16 y18c ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x25 h13 y18b ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>+</div><div class="t m0 xe5 h16 y18c ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x79 h12 y18a ff9 fs5 fc0 sc0 ls0 ws0">2</div><div class="t m0 xe4 h6 y18b ff2 fs2 fc0 sc0 ls0 ws0">）<span class="_ _13"> </span><span class="ffb">+</span></div><div class="t m0 x69 h13 y18d ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 xfe h12 y18e ff9 fs5 fc0 sc0 ls0 ws0">2<span class="_ _3"> </span><span class="ffb">±</span>2<span class="_ _0"></span>s</div><div class="t m0 x100 h6 y18f ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ff9">c<span class="_ _8"></span>o<span class="_"> </span>s<span class="_ _0"></span></span>［</div><div class="t m0 xf9 h6 y190 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">2<span class="_ _11"> </span><span class="ffb">±<span class="_ _10"> </span></span>2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s</span></span>）</div><div class="t m0 x83 h16 y191 ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x21 h13 y190 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>+</div><div class="t m0 xf8 h16 y191 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x101 h12 y18e ff9 fs5 fc0 sc0 ls0 ws0">2<span class="_ _3"> </span><span class="ffb">±</span>2<span class="_ _0"></span>s</div><div class="t m0 xf0 h6 y18f ff2 fs2 fc0 sc0 ls0 ws0">］<span class="_ _1e"></span><span class="ffb">+</span></div><div class="t m0 x69 h13 y192 ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 xfe h12 y193 ff9 fs5 fc0 sc0 ls0 ws0">2<span class="_ _3"> </span><span class="ffb">±</span>4<span class="_ _0"></span>s</div><div class="t m0 x100 h6 y194 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ff9">c<span class="_ _8"></span>o<span class="_"> </span>s<span class="_ _0"></span></span>［</div><div class="t m0 xf9 h6 y195 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">2<span class="_ _11"> </span><span class="ffb">±<span class="_ _10"> </span></span>4<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s</span></span>）</div><div class="t m0 x83 h16 y196 ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x21 h13 y195 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>+</div><div class="t m0 xf8 h16 y196 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x101 h12 y193 ff9 fs5 fc0 sc0 ls0 ws0">2<span class="_ _3"> </span><span class="ffb">±</span>4<span class="_ _0"></span>s</div><div class="t m0 xf0 h6 y194 ff2 fs2 fc0 sc0 ls0 ws0">］<span class="_ _1e"></span><span class="ffb">+</span></div><div class="t m0 x69 h13 y197 ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 xfe h12 y198 ff9 fs5 fc0 sc0 ls0 ws0">2s</div><div class="t m0 x5d h6 y199 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ff9">c<span class="_ _8"></span>o<span class="_"> </span>s<span class="_ _0"></span></span>（<span class="_ _10"> </span><span class="ff9">2<span class="_ _0"></span><span class="ffb">k<span class="_ _0"></span>s</span></span></div><div class="t m0 xd4 h16 y19a ffd fs2 fc0 sc0 ls0 ws0">ω</div><div class="t m0 x1b h13 y199 ffb fs2 fc0 sc0 ls0 ws0">t<span class="_ _11"> </span>+</div><div class="t m0 xf3 h16 y19a ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x63 h12 y198 ff9 fs5 fc0 sc0 ls0 ws0">2s</div><div class="t m0 x64 h6 y199 ff2 fs2 fc0 sc0 ls0 ws0">）</div><div class="t m0 xe7 h6 y19b ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">5<span class="_ _0"></span></span>）</div><div class="t m0 x57 h6 y19c ff2 fs2 fc0 sc0 ls0 ws0">式</div><div class="t m0 x7c h6 y19d ff2 fs2 fc0 sc0 ls0 ws0">中</div><div class="t m0 xb h6 y19e ff2 fs2 fc0 sc0 ls0 ws0">：<span class="_ _12"> </span><span class="ffb">q</span></div><div class="t m0 x69 h12 y19f ff9 fs5 fc0 sc0 ls0 ws0">0</div><div class="t m0 xfe h6 y1a0 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _7"> </span><span class="ffb">t<span class="_ _3"></span></span>）<span class="_ _f"> </span><span class="ffc">、</span></div><div class="t m0 x102 h16 y1a1 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x103 h12 y19f ff9 fs5 fc0 sc0 ls0 ws0">0</div><div class="t m0 x104 h1a y1a0 ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 x105 h1a y1a2 ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 x6a h6 y19c ff2 fs2 fc0 sc0 ls0 ws0">频</div><div class="t m0 xdd h6 y19d ff2 fs2 fc0 sc0 ls0 ws0">率<span class="_ _3"></span>为</div><div class="t m0 x106 hf y19e ff9 fs2 fc0 sc0 ls0 ws0">0</div><div class="t m0 x21 h6 y19d ff2 fs2 fc0 sc0 ls0 ws0">的<span class="_ _3"></span>单<span class="_ _1e"></span>相<span class="_ _3"></span>流<span class="_ _1e"></span>方<span class="_ _1e"></span>的<span class="_ _1e"></span>幅</div><div class="t m0 x6a h6 y1a3 ff2 fs2 fc0 sc0 ls0 ws0">值</div><div class="t m0 x107 h10 y1a4 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xd6 h6 y1a3 ff2 fs2 fc0 sc0 ls0 ws0">初始<span class="_ _0"></span>相<span class="_ _0"></span>位</div><div class="t m0 x108 h6 y1a4 ff2 fs2 fc0 sc0 ls0 ws0">；</div><div class="t m0 x68 h13 y1a5 ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 x69 h12 y1a6 ff9 fs5 fc0 sc0 ls0 ws0">2</div><div class="t m0 x109 h6 y1a7 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ffc">、</span></div><div class="t m0 xeb h16 y1a8 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xec h12 y1a6 ff9 fs5 fc0 sc0 ls0 ws0">2</div><div class="t m0 x10a h1a y1a7 ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 x81 h1a y1a9 ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 x10b h6 y1aa ff2 fs2 fc0 sc0 ls0 ws0">频</div><div class="t m0 x1b h6 y1ab ff2 fs2 fc0 sc0 ls0 ws0">率<span class="_ _8"></span>为</div><div class="t m0 xfb hf y1a5 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">f</span></div><div class="t m0 x10c h12 y1a6 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x10d h6 y1ac ff2 fs2 fc0 sc0 lsb ws0">的单相流方的幅</div><div class="t m0 x10b h6 y1ad ff2 fs2 fc0 sc0 ls0 ws0">值</div><div class="t m0 x1b h10 y1ae ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xd9 h6 y1ad ff2 fs2 fc0 sc0 ls0 ws0">初</div><div class="t m0 xd8 h6 y1af ff2 fs2 fc0 sc0 ls0 ws0">始相<span class="_ _0"></span>位</div><div class="t m0 x2 h6 y1b0 ff2 fs2 fc0 sc0 ls0 ws0">；</div><div class="t m0 x68 h13 y1b1 ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 x69 h11 y1b2 ff2 fs5 fc0 sc0 ls0 ws0">（<span class="_ _1d"> </span><span class="ff9">2<span class="_ _1d"> </span>±<span class="_ _3"> </span>2<span class="_ _0"></span>s</span>）</div><div class="t m0 x10e h6 y1b3 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ffc">、</span></div><div class="t m0 x62 h16 y1b4 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xd3 h12 y1b2 ff9 fs5 fc0 sc0 ls0 ws0">2<span class="_ _1d"> </span>±<span class="_ _3"> </span>2<span class="_ _0"></span>s</div><div class="t m0 x6b h1a y1b3 ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 xdd h1a y1b5 ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 x77 h6 y1b6 ff2 fs2 fc0 sc0 ls0 ws0">频</div><div class="t m0 x64 h6 y1b7 ff2 fs2 fc0 sc0 ls0 ws0">率<span class="_ _0"></span>为</div><div class="t m0 x25 h6 y1b1 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _2"> </span><span class="ff9">2<span class="_ _10"> </span>±<span class="_ _1d"> </span>2<span class="ffb">s<span class="_ _0"></span></span></span>）<span class="_ _f"> </span><span class="ffb">f</span></div><div class="t m0 x6e h12 y1b2 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x10f h6 y1b8 ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 x110 h6 y1b7 ff2 fs2 fc0 sc0 ls0 ws0">单</div><div class="t m0 x77 h6 y1b9 ff2 fs2 fc0 sc0 ls0 ws0">相<span class="_ _3"></span>流<span class="_ _1d"> </span>方<span class="_ _18"> </span>的<span class="_ _1d"> </span>幅<span class="_ _18"> </span>值</div><div class="t m0 x59 h10 y1ba ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x5a h6 y1b9 ff2 fs2 fc0 sc0 ls0 ws0">初<span class="_ _1d"> </span>始</div><div class="t m0 x77 h6 y1bb ff2 fs2 fc0 sc0 ls0 ws0">相<span class="_ _15"></span>位</div><div class="t m0 x21 h6 y1bc ff2 fs2 fc0 sc0 ls0 ws0">；</div><div class="t m0 x68 h13 y1bd ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 x69 h11 y1be ff2 fs5 fc0 sc0 ls0 ws0">（<span class="_ _1d"> </span><span class="ff9">2<span class="_ _1d"> </span>±<span class="_ _3"> </span>4<span class="_ _0"></span>s</span>）</div><div class="t m0 x10e h6 y1bf ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_"> </span></span>）<span class="_ _f"> </span><span class="ffc">、</span></div><div class="t m0 x62 h16 y1c0 ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 xd3 h12 y1be ff9 fs5 fc0 sc0 ls0 ws0">2<span class="_ _1d"> </span>±<span class="_ _3"> </span>4<span class="_ _0"></span>s</div><div class="t m0 x6b h1a y1bf ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 xdd h1a y1c1 ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 x77 h6 y1c2 ff2 fs2 fc0 sc0 ls0 ws0">频</div><div class="t m0 x64 h6 y1c3 ff2 fs2 fc0 sc0 ls0 ws0">率<span class="_ _0"></span>为</div><div class="t m0 x25 h6 y1c4 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _2"> </span><span class="ff9">2<span class="_ _10"> </span>±<span class="_ _1d"> </span>4<span class="ffb">s<span class="_ _0"></span></span></span>）<span class="_ _f"> </span><span class="ffb">f</span></div><div class="t m0 x6e h12 y1be ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x10f h6 y1c5 ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 x110 h6 y1c3 ff2 fs2 fc0 sc0 ls0 ws0">单</div><div class="t m0 x77 h6 y1c6 ff2 fs2 fc0 sc0 ls0 ws0">相<span class="_ _3"></span>流<span class="_ _1d"> </span>方<span class="_ _18"> </span>的<span class="_ _1d"> </span>幅<span class="_ _18"> </span>值</div><div class="t m0 x59 h10 y1c7 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 x5a h6 y1c6 ff2 fs2 fc0 sc0 ls0 ws0">初<span class="_ _1d"> </span>始</div><div class="t m0 x77 h6 y1c8 ff2 fs2 fc0 sc0 ls0 ws0">相<span class="_ _15"></span>位</div><div class="t m0 x21 h6 y1c9 ff2 fs2 fc0 sc0 ls0 ws0">；</div><div class="t m0 x68 h13 y1ca ffb fs2 fc0 sc0 ls0 ws0">q</div><div class="t m0 x69 h12 y1cb ff9 fs5 fc0 sc0 ls0 ws0">2s</div><div class="t m0 x5c h6 y1cc ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _f"> </span><span class="ffb">t<span class="_ _0"></span></span>）<span class="_ _f"> </span><span class="ffc">、</span></div><div class="t m0 x102 h16 y1cd ffd fs2 fc0 sc0 ls0 ws0"></div><div class="t m0 x103 h12 y1cb ff9 fs5 fc0 sc0 ls0 ws0">2s</div><div class="t m0 x81 h1a y1cc ffc fs2 fc0 sc0 ls0 ws0">—</div><div class="t m0 x73 h1a y1ce ffc fs2 fc0 sc0 ls0 ws0">—<span class="_ _1"></span>—</div><div class="t m0 x1a h6 y1cf ff2 fs2 fc0 sc0 ls0 ws0">频</div><div class="t m0 xd9 h6 y1d0 ff2 fs2 fc0 sc0 ls0 ws0">率<span class="_ _3"></span>为</div><div class="t m0 x111 hf y1ca ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _8"></span><span class="ffb">sf</span></div><div class="t m0 x22 h12 y1cb ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x108 h6 y1d1 ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 x112 h6 y1d0 ff2 fs2 fc0 sc0 ls0 ws0">单<span class="_ _3"></span>相<span class="_ _3"></span>流<span class="_ _3"></span>方<span class="_ _3"></span>的</div><div class="t m0 x1a h6 y1d2 ff2 fs2 fc0 sc0 ls0 ws0">幅值</div><div class="t m0 xd8 h10 y1d3 ffa fs2 fc0 sc0 ls0 ws0">、</div><div class="t m0 xfa h6 y1d2 ff2 fs2 fc0 sc0 ls0 ws0">初始<span class="_ _0"></span>相<span class="_ _0"></span>位</div><div class="t m0 x113 h10 y1d3 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 xb h6 y1d4 ff2 fs2 fc0 sc0 ls0 ws0">由<span class="_ _0"></span>式</div><div class="t m0 x5c h6 y1d5 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">5<span class="_ _3"></span></span>）</div><div class="t m0 xeb h6 y1d4 ff2 fs2 fc0 sc0 ls0 ws0">可<span class="_ _0"></span>看<span class="_ _8"></span>出</div><div class="t m0 x114 h6 y1d5 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 xee h6 y1d4 ff2 fs2 fc0 sc0 ls9 ws0">转<span class="_ _15"></span>子断条故障时流方项既</div><div class="t m0 x57 h6 y1d6 ff2 fs2 fc0 sc0 lsc ws0">含无故障时的直流<span class="_ _0"></span>分<span class="_ _0"></span>量<span class="_ _0"></span>和</div><div class="t m0 x1c hf y1d7 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _3"></span><span class="ffb">f</span></div><div class="t m0 xef h12 y1d8 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xf7 h6 y1d9 ff2 fs2 fc0 sc0 ls0 ws0">分</div><div class="t m0 x115 h6 y1da ff2 fs2 fc0 sc0 ls0 ws0">量</div><div class="t m0 x3 h6 y1db ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x112 h6 y1da ff2 fs2 fc0 sc0 ls0 ws0">也<span class="_ _8"></span>包<span class="_ _3"></span>括<span class="_ _8"></span>了<span class="_ _3"></span>分</div><div class="t m0 x57 h6 y1dc ff2 fs2 fc0 sc0 ls0 ws0">别<span class="_ _0"></span>为</div><div class="t m0 xb h6 y1dd ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _10"> </span><span class="ff9">2<span class="_ _7"> </span>±<span class="_ _2"> </span>4<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>s<span class="_ _8"></span></span></span>）<span class="_ _7"> </span><span class="ffb">f</span></div><div class="t m0 x116 h12 y1de ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x117 h6 y1df ffc fs2 fc0 sc0 ls0 ws0">、<span class="_ _22"></span><span class="ff2">（<span class="_ _f"> </span><span class="ff9">2<span class="_ _7"> </span>±<span class="_ _23"> </span>2<span class="_ _3"></span><span class="ffb">ks<span class="_ _8"></span></span></span>）<span class="_ _11"> </span><span class="ffb">f</span></span></div><div class="t m0 x1d h12 y1de ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x82 h10 y1df ffa fs2 fc0 sc0 ls0 ws0">、<span class="_ _1"></span><span class="ff9">2<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>sf</span></span></div><div class="t m0 x108 h12 y1de ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xf8 h10 y1df ffa fs2 fc0 sc0 ls0 ws0">、<span class="_ _1"></span><span class="ff9">4<span class="_ _8"></span><span class="ffb">k<span class="_ _0"></span>sf</span></span></div><div class="t m0 x118 h12 y1de ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 xe6 h6 y1e0 ff2 fs2 fc0 sc0 ls0 ws0">的</div><div class="t m0 x7a h6 y1dc ff2 fs2 fc0 sc0 ls0 ws0">断<span class="_ _3"></span>条</div><div class="t m0 x57 h6 y1e1 ff2 fs2 fc0 sc0 ls0 ws0">故<span class="_ _0"></span>障<span class="_ _8"></span>频<span class="_ _1e"></span>率<span class="_ _1e"></span>分<span class="_ _1e"></span>量</div><div class="t m0 xec h10 y1e2 ffa fs2 fc0 sc0 ls0 ws0">。</div><div class="t m0 x119 h6 y1e1 ff2 fs2 fc0 sc0 ls6 ws0">为避免特征故障频率<span class="_ _0"></span>被淹没</div><div class="t m0 x7b h6 y1e2 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x57 h6 y1e3 ff2 fs2 fc0 sc0 ls0 ws0">可<span class="_ _0"></span>选<span class="_ _8"></span>特<span class="_ _8"></span>征<span class="_ _0"></span>故<span class="_ _8"></span>障<span class="_ _3"></span>频<span class="_ _3"></span>率<span class="_ _8"></span>为</div><div class="t m0 x75 hf y1e4 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _3"></span><span class="ffb">ksf</span></div><div class="t m0 x11a h12 y1e5 ff9 fs5 fc0 sc0 ls0 ws0">1</div><div class="t m0 x11b h6 y1e6 ff2 fs2 fc0 sc0 ls0 ws0">（<span class="_ _7"> </span><span class="ffb">k<span class="_ _f"> </span><span class="ff9">=<span class="_ _23"> </span>1</span></span></div><div class="t m0 x25 h6 y1e7 ff2 fs2 fc0 sc0 ls0 ws0">时</div><div class="t m0 x112 h6 y1e8 ff2 fs2 fc0 sc0 ls0 ws0">的<span class="_ _3"></span>故<span class="_ _8"></span>障<span class="_ _3"></span>分<span class="_ _3"></span>量</div><div class="t m0 x57 h6 y38 ff2 fs2 fc0 sc0 ls0 ws0">最<span class="_ _0"></span>大</div><div class="t m0 xb h6 y39 ff2 fs2 fc0 sc0 ls0 ws0">）<span class="_ _7"> </span><span class="ffc">。</span></div><div class="t m0 x2e h14 y3b ff1 fs2 fc0 sc0 ls0 ws0">1.<span class="_ _2"> </span>2</div><div class="t m0 x18 h6 y3a ff3 fs2 fc0 sc0 ls5 ws0">基于单相流方的转子断条故障诊断试验</div><div class="t m0 xb h6 y1e9 ff2 fs2 fc0 sc0 ls10 ws0">本文试验采用的异步电机型号为</div><div class="t m0 x113 h6 y1ea ff9 fs2 fc0 sc0 ls0 ws0">Y<span class="_ _15"></span>1<span class="_ _15"></span>32M<span class="_ _0"></span>-<span class="_ _5"></span>4<span class="_ _0"></span><span class="ff2">，</span></div><div class="t m0 x5b h6 y1e9 ff2 fs2 fc0 sc0 ls0 ws0">额</div><div class="t m0 x57 h6 y1eb ff2 fs2 fc0 sc0 ls0 ws0">定功率</div><div class="t m0 x11c h6 y1ec ff9 fs2 fc0 sc0 ls0 ws0">7<span class="_ _15"></span>.<span class="_ _2"> </span>5<span class="_ _10"> </span>kW<span class="_ _d"></span><span class="ff2">，</span></div><div class="t m0 x116 h6 y1eb ff2 fs2 fc0 sc0 ls0 ws0">额定<span class="_ _0"></span>电<span class="_ _0"></span>压</div><div class="t m0 xfc h6 y1ec ff9 fs2 fc0 sc0 ls0 ws0">3<span class="_ _15"></span>80<span class="_ _f"> </span>V<span class="_ _0"></span><span class="ff2">，</span></div><div class="t m0 x72 h6 y1eb ff2 fs2 fc0 sc0 ls0 ws0">额<span class="_ _0"></span>定<span class="_ _0"></span>电<span class="_ _0"></span>流</div><div class="t m0 x11d h6 y1ec ff9 fs2 fc0 sc0 ls0 ws0">1<span class="_ _15"></span>5.<span class="_ _23"> </span>4<span class="_ _10"> </span>A<span class="ff2">，</span></div><div class="t m0 x57 h6 y1ed ff2 fs2 fc0 sc0 ls0 ws0">额定转<span class="_ _d"></span>速</div><div class="t m0 x11e h6 y1ee ff9 fs2 fc0 sc0 ls0 ws0">1<span class="_ _f"> </span>4<span class="_ _15"></span>40<span class="_ _7"> </span>r<span class="_ _1e"> </span>/<span class="_ _1e"> </span>min<span class="ff2">，</span></div><div class="t m0 x11f h6 y1ed ff2 fs2 fc0 sc0 ls0 ws0">采<span class="_ _0"></span>样<span class="_ _0"></span>频<span class="_ _8"></span>率</div><div class="t m0 x72 h6 y1ee ff9 fs2 fc0 sc0 ls0 ws0">5<span class="_ _f"> </span>00<span class="_ _15"></span>0<span class="_ _11"> </span>H<span class="_ _15"></span>z<span class="_ _0"></span><span class="ff2">，</span></div><div class="t m0 x6c h6 y1ed ff2 fs2 fc0 sc0 ls0 ws0">采<span class="_ _0"></span>样<span class="_ _8"></span>点</div><div class="t m0 x57 h6 y1ef ff2 fs2 fc0 sc0 ls0 ws0">数</div><div class="t m0 xcf h10 y1f0 ff9 fs2 fc0 sc0 ls0 ws0">2<span class="_ _15"></span>0<span class="_ _10"> </span>0<span class="_ _d"></span>5<span class="_ _15"></span>6<span class="_ _0"></span><span class="ffa">。</span></div><div class="t m0 x120 h6 y1ef ff2 fs2 fc0 sc0 ls8 ws0">为信号分析的准确性</div><div class="t m0 xe1 h6 y1f0 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x108 h6 y1ef ff2 fs2 fc0 sc0 ls0 ws0">进<span class="_ _8"></span>行</div><div class="t m0 x121 hf y1f0 ff9 fs2 fc0 sc0 ls0 ws0">FFT</div><div class="t m0 x5a h6 y1ef ff2 fs2 fc0 sc0 ls0 ws0">频<span class="_ _8"></span>谱</div><div class="t m0 x57 h6 y1f1 ff2 fs2 fc0 sc0 ls0 ws0">分析<span class="_ _0"></span>时</div><div class="t m0 x60 h6 y1f2 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x61 h6 y1f1 ff2 fs2 fc0 sc0 ls5 ws0">采用的数据量应当是</div><div class="t m0 x64 hf y1f2 ff9 fs2 fc0 sc0 ls0 ws0">2</div><div class="t m0 x21 h6 y1f1 ff2 fs2 fc0 sc0 ls0 ws0">的整<span class="_ _0"></span>数<span class="_ _0"></span>次<span class="_ _0"></span>方</div><div class="t m0 x6e h6 y1f2 ff2 fs2 fc0 sc0 ls0 ws0">，</div><div class="t m0 x5a h6 y1f1 ff2 fs2 fc0 sc0 ls0 ws0">故<span class="_ _0"></span>采</div><div class="t m0 x3b h9 y7c ffa fs0 fc0 sc0 ls0 ws0">—<span class="_ _1a"></span><span class="ff9">4<span class="_ _1b"></span>4<span class="_ _1a"></span><span class="ffa">—</span></span></div></div><div class="pi" data-data='{"ctm":[1.612022,0.000000,0.000000,1.612022,0.000000,0.000000]}'></div></div>
