simulink 仿真_matlab_matlab例程_数值算法/人工智能下载-pudn.com

<html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta charset="utf-8"> <meta name="generator" content="pdf2htmlEX"> <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> <link rel="stylesheet" href="https://static.pudn.com/base/css/base.min.css"> <link rel="stylesheet" href="https://static.pudn.com/base/css/fancy.min.css"> <link rel="stylesheet" href="https://static.pudn.com/prod/directory_preview_static/6267d3b34c65f4125976498c/raw.css"> <script src="https://static.pudn.com/base/js/compatibility.min.js"></script> <script src="https://static.pudn.com/base/js/pdf2htmlEX.min.js"></script> <script> try{ pdf2htmlEX.defaultViewer = new pdf2htmlEX.Viewer({}); }catch(e){} </script> <title></title> </head> <body> <div id="sidebar" style="display: none"> <div id="outline"> </div> </div> <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/6267d3b34c65f4125976498c/bg1.jpg"><div class="c x0 y1 w2 h2"><div class="t m0 x1 h3 y2 ff1 fs0 fc0 sc0 ls0 ws0">已知晶闸管<span class="ff2">-</span>直流电机单闭环调速系统的<span class="_ _0"> </span><span class="ff2">Simulink<span class="_ _0"> </span></span>动态结构图如图所示，试利用<span class="_ _0"> </span><span class="ff2">Simulink</span></div><div class="t m0 x1 h3 y3 ff1 fs0 fc0 sc0 ls0 ws0">动态结构图绘制该系统的曲线，并与利用<span class="_ _0"> </span><span class="ff2">Simulink<span class="_ _1"> </span></span>系统模型图仿真的结果进行比较。</div><div class="t m0 x1 h3 y4 ff1 fs0 fc0 sc1 ls0 ws0">解：<span class="_ _2"></span><span class="sc0">（<span class="ff2">1</span>）利用<span class="_ _1"> </span><span class="ff2">Simulink<span class="_ _1"> </span></span>动态结构图仿真</span></div><div class="t m0 x1 h3 y5 ff1 fs0 fc0 sc0 ls0 ws0">建<span class="_ _3"> </span>立<span class="_ _3"> </span>如<span class="_ _3"> </span>图<span class="_ _3"> </span>所<span class="_ _3"> </span>示<span class="_ _3"> </span>的<span class="_ _4"> </span><span class="ff2">Simulink<span class="_ _4"> </span></span>动<span class="_ _3"> </span>态<span class="_ _3"> </span>结<span class="_ _3"> </span>构<span class="_ _3"> </span>图<span class="_ _3"> </span>，<span class="_ _3"> </span>并<span class="_ _3"> </span>保<span class="_ _3"> </span>存<span class="_ _3"> </span>为<span class="_ _4"> </span><span class="ff2">untitled2<span class="_ _3"> </span></span>。<span class="_ _3"> </span>根<span class="_ _3"> </span>据<span class="_ _3"> </span>题<span class="_ _3"> </span>目<span class="_ _3"> </span>要<span class="_ _3"> </span>求<span class="_ _3"> </span>，<span class="_ _3"> </span>在</div><div class="t m0 x1 h3 y6 ff2 fs0 fc0 sc0 ls0 ws0">MA<span class="_ _5"></span>TLAB<span class="_ _0"> </span><span class="ff1">程序编辑窗口编写如下的程序并存盘。</span></div><div class="t m0 x1 h4 y7 ff2 fs0 fc0 sc0 ls0 ws0">[a,b,c,d]=linmod2('object1');</div><div class="t m0 x1 h4 y8 ff2 fs0 fc0 sc0 ls0 ws0">sys=ss(a,b,c,d);</div><div class="t m0 x1 h4 y9 ff2 fs0 fc0 sc0 ls0 ws0">"gure (1)</div><div class="t m0 x1 h4 ya ff2 fs0 fc0 sc0 ls0 ws0">step(sys)</div><div class="t m0 x1 h4 yb ff2 fs0 fc0 sc0 ls0 ws0">"gure (2)</div><div class="t m0 x1 h4 yc ff2 fs0 fc0 sc0 ls0 ws0">impulse(sys) </div><div class="t m0 x1 h3 yd ff1 fs0 fc0 sc0 ls0 ws0">在<span class="_ _1"> </span><span class="ff2">MA<span class="_ _5"></span>TLAB<span class="_ _0"> </span><span class="ff1">命令窗口运行该程序可得到如下的仿真结果。左图为系统单位阶跃响应。右图</span></span></div><div class="t m0 x1 h3 ye ff1 fs0 fc0 sc0 ls0 ws0">为系统单位脉冲响应。</div><div class="t m0 x1 h3 yf ff1 fs0 fc0 sc0 ls0 ws0">（<span class="ff2">2</span>）利用<span class="_ _1"> </span><span class="ff2">Simulink<span class="_ _0"> </span></span>系统模型图仿真</div><div class="t m0 x1 h3 y10 ff2 fs0 fc0 sc0 ls0 ws0"> <span class="_ _6"></span> <span class="_ _6"></span> <span class="_ _6"></span><span class="ff1">建立如<span class="_ _6"></span>图<span class="_ _0"> </span></span>5-24<span class="_ _1"> </span><span class="ff1">所<span class="_ _6"></span>示的系<span class="_ _6"></span>统模型<span class="_ _6"></span>图，双击<span class="_ _7"> </span></span>Step<span class="_ _1"> </span><span class="ff1">模<span class="_ _6"></span>块，设<span class="_ _6"></span>置模块属<span class="_ _6"></span>性：跳<span class="_ _6"></span>变时间<span class="_ _6"></span>为<span class="_ _7"> </span></span>0<span class="ff1">；</span></div><div class="t m0 x1 h3 y11 ff1 fs0 fc0 sc0 ls0 ws0">初始值为<span class="_ _1"> </span><span class="ff2">0</span>；终止值为<span class="_ _0"> </span><span class="ff2">1</span>；采样时间为<span class="_ _0"> </span><span class="ff2">0</span>。点击<span class="fc1 sc0"> </span><span class="fc1 sc0"> </span><span class="fc1 sc0"> </span> <span class="_ _6"></span>按钮开始仿真，双击<span class="_ _0"> </span><span class="ff2">Scope<span class="_ _1"> </span></span>模块，可以</div><div class="t m0 x1 h3 y12 ff1 fs0 fc0 sc0 ls0 ws0">看到如图<span class="_ _1"> </span><span class="ff2">5-25<span class="_ _0"> </span></span>所示的系统阶跃响应曲线。</div></div></div><div class="pi" data-data='{"ctm":[1.611850,0.000000,0.000000,1.611850,0.000000,0.000000]}'></div></div> </body> </html>