EPS扭矩传感器-EPS传感器.rar

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<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/625f0ad02cc14f663627df84/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/625f0ad02cc14f663627df84/bg1.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">2006-01-0939 </div><div class="t m0 x2 h3 y2 ff1 fs1 fc0 sc0 ls1 ws1">Development of a Cont<span class="_ _0"></span>actless Hall effect torque sensor for </div><div class="t m0 x3 h3 y3 ff1 fs1 fc0 sc0 ls2 ws0">Electric Power S<span class="_ _0"></span>teering </div><div class="t m0 x4 h4 y4 ff1 fs2 fc0 sc0 ls2 ws2">Didier ANGLEVIEL </div><div class="t m0 x5 h5 y5 ff2 fs3 fc0 sc0 ls3 ws3">Moving Magnet Tec<span class="_ _1"></span>hnologies S.A. </div><div class="t m0 x6 h4 y6 ff1 fs2 fc0 sc0 ls4 ws4">Didier FRACHON, G&#233;<span class="_ _1"></span>rald MASSON </div><div class="t m0 x5 h5 y7 ff2 fs3 fc0 sc0 ls3 ws3">Moving Magnet Tec<span class="_ _1"></span>hnologies S.A. </div><div class="t m0 x7 h5 y8 ff2 fs3 fc0 sc0 ls5 ws0"> </div><div class="t m0 x8 h6 y9 ff2 fs4 fc0 sc0 ls6 ws5">Copyright &#169; 2005 SAE International</div><div class="t m0 x8 h7 ya ff1 fs5 fc0 sc0 ls7 ws0">ABSTRACT </div><div class="t m0 x8 h8 yb ff3 fs3 fc0 sc0 ls8 ws6">In this paper, we will present an innovative torque </div><div class="t m0 x8 h8 yc ff3 fs3 fc0 sc0 ls9 ws7">sensor des<span class="_ _1"></span>ign which c<span class="_ _1"></span>ould be pre<span class="_ _1"></span>ferably used in Electric<span class="_ _1"></span> </div><div class="t m0 x8 h8 yd ff3 fs3 fc0 sc0 ls9 ws8">Power Assisted Steer<span class="_ _1"></span>ing (EPAS) application. This torqu<span class="_ _1"></span>e </div><div class="t m0 x8 h8 ye ff3 fs3 fc0 sc0 lsa ws9">sensor is<span class="_ _1"></span> a non-contact Ha<span class="_ _1"></span>ll effect design. Th<span class="_ _1"></span>e </div><div class="t m0 x8 h8 yf ff3 fs3 fc0 sc0 lsb wsa">specificity of this structure is its ability to measure the </div><div class="t m0 x8 h8 y10 ff3 fs3 fc0 sc0 lsc wsb">shift angle <span class="_ _1"></span>between <span class="_ _1"></span>two rotating shafts<span class="_ _1"></span> linked by<span class="_ _1"></span> a </div><div class="t m0 x8 h8 y11 ff3 fs3 fc0 sc0 lsc wsc">torsion bar<span class="_ _1"></span>. This measu<span class="_ _1"></span>rement is <span class="_ _1"></span>done with stat<span class="_ _1"></span>ionary </div><div class="t m0 x8 h8 y12 ff3 fs3 fc0 sc0 lsa wsd">electronic c<span class="_ _1"></span>omponents. This <span class="_ _1"></span>unique structur<span class="_ _1"></span>e generates<span class="_ _1"></span> </div><div class="t m0 x8 h8 y13 ff3 fs3 fc0 sc0 lsd wse">enough magnetic flux v<span class="_ _1"></span>ariation to measure<span class="_ _1"></span> angular shifts </div><div class="t m0 x8 h8 y14 ff3 fs3 fc0 sc0 lse wsf">from +/-1&#176; to +/-8&#176; with low-cost standard Hall ASICs </div><div class="t m0 x8 h8 y15 ff3 fs3 fc0 sc0 lsf ws10">available from var<span class="_ _1"></span>ious supplier<span class="_ _1"></span>s. This torque sensor<span class="_ _1"></span> has </div><div class="t m0 x8 h8 y16 ff3 fs3 fc0 sc0 ls10 ws11">convinced aut<span class="_ _0"></span>omotive industry du<span class="_ _0"></span>e to its good </div><div class="t m0 x8 h8 y17 ff3 fs3 fc0 sc0 ls11 ws12">performances, its<span class="_ _1"></span> compact dimension and a pric<span class="_ _1"></span>e </div><div class="t m0 x8 h8 y18 ff3 fs3 fc0 sc0 ls12 ws13">compatible with the <span class="_ _0"></span>mar<span class="_ _1"></span>ket expectation for this </div><div class="t m0 x8 h8 y19 ff3 fs3 fc0 sc0 lsf ws0">application. </div><div class="t m0 x8 h8 y1a ff3 fs3 fc0 sc0 ls5 ws14">This paper will explain the <span class="lse ws15">basic magnetic principle of </span></div><div class="t m0 x8 h8 y1b ff3 fs3 fc0 sc0 ls13 ws16">this torque sensor, the imp<span class="_ _0"></span>r<span class="_ _1"></span>ovements wh<span class="_ _0"></span>ich have lead to </div><div class="t m0 x8 h8 y1c ff3 fs3 fc0 sc0 lsd ws17">a structure co<span class="_ _1"></span>mpatible with automotive in<span class="_ _1"></span>dustry </div><div class="t m0 x8 h8 y1d ff3 fs3 fc0 sc0 lsa ws18">requirements, s<span class="_ _1"></span>ome measurement results<span class="_ _1"></span> and possible </div><div class="t m0 x8 h8 y1e ff3 fs3 fc0 sc0 ls11 ws19">sensor integr<span class="_ _1"></span>ation in the application. </div><div class="t m0 x8 h5 y1f ff2 fs3 fc0 sc0 ls5 ws0"> </div><div class="t m0 x8 h7 y20 ff1 fs5 fc0 sc0 ls14 ws0">INTRODUCTION </div><div class="t m0 x8 h5 y21 ff2 fs3 fc0 sc0 ls9 ws1a">Nowadays, for co<span class="_ _1"></span>st and pollution reaso<span class="_ _1"></span>ns, the </div><div class="t m0 x8 h5 y22 ff2 fs3 fc0 sc0 lsd ws1b">development <span class="_ _1"></span>of new vehicles <span class="_ _1"></span>is strongly driven by a </div><div class="t m0 x8 h5 y23 ff2 fs3 fc0 sc0 ls15 ws1c">research of fu<span class="_ _1"></span>el consumption r<span class="_ _1"></span>eduction. One<span class="_ _1"></span> interesting </div><div class="t m0 x8 h5 y24 ff2 fs3 fc0 sc0 lsf ws1d">way for such fuel ec<span class="_ _1"></span>onomies is the r<span class="_ _1"></span>eplacement of </div><div class="t m0 x8 h5 y25 ff2 fs3 fc0 sc0 ls11 ws1e">current hydrau<span class="_ _1"></span>lic power steering<span class="_ _1"></span> by EPAS using high </div><div class="t m0 x8 h5 y26 ff2 fs3 fc0 sc0 ls16 ws1f">power Brush<span class="_ _1"></span>less DC (BLDC) mo<span class="_ _1"></span>tors. The typical fuel </div><div class="t m0 x8 h5 y27 ff2 fs3 fc0 sc0 lsc ws20">economy rea<span class="_ _1"></span>lized by shifting <span class="_ _1"></span>from a hydr<span class="_ _1"></span>aulic power </div><div class="t m0 x8 h5 y28 ff2 fs3 fc0 sc0 ls16 ws21">steering to an EPAS is abou<span class="_ _1"></span>t 5 percent. With the </div><div class="t m0 x8 h5 y29 ff2 fs3 fc0 sc0 ls11 ws22">improvement of the<span class="_ _1"></span> BLDC motor s<span class="_ _1"></span>tructures an<span class="_ _1"></span>d the </div><div class="t m0 x8 h5 y2a ff2 fs3 fc0 sc0 ls9 ws23">increase of the elec<span class="_ _1"></span>tric power available<span class="_ _1"></span> with batteries, </div><div class="t m0 x8 h5 y2b ff2 fs3 fc0 sc0 lsa ws24">the market <span class="_ _1"></span>shares <span class="_ _1"></span>of EPAS should grow<span class="_ _1"></span> quickly in the </div><div class="t m0 x8 h5 y2c ff2 fs3 fc0 sc0 ls17 ws25">next few years [1]. </div><div class="t m0 x8 h5 y2d ff2 fs3 fc0 sc0 lsd ws26">In order to drive e<span class="_ _1"></span>fficiently the BLDC motor<span class="_ _1"></span>, the ECU </div><div class="t m0 x8 h5 y2e ff2 fs3 fc0 sc0 lsb ws27">requires accur<span class="_ _1"></span>ate informati<span class="ls11 ws28">on on the torque applied<span class="_ _1"></span> by </span></div><div class="t m0 x9 h5 y2f ff2 fs3 fc0 sc0 lsc ws29">the driver<span class="_ _1"></span> to the steerin<span class="_ _1"></span>g wheel. This tor<span class="_ _1"></span>que signal </div><div class="t m0 x9 h5 y30 ff2 fs3 fc0 sc0 ls18 ws2a">usually comes from<span class="_ _0"></span> the shift measurement <span class="_ _0"></span>between two </div><div class="t m0 x9 h5 y31 ff2 fs3 fc0 sc0 ls8 ws2b">shafts linked by a linear torsio<span class="ls9 ws8">n bar. The<span class="_ _1"></span> main concern in </span></div><div class="t m0 x9 h5 y32 ff2 fs3 fc0 sc0 ls19 ws2c">this meas<span class="_ _1"></span>urement is <span class="_ _1"></span>due to the fac<span class="_ _1"></span>t that these shafts<span class="_ _1"></span> are </div><div class="t m0 x9 h5 y33 ff2 fs3 fc0 sc0 ls3 ws2d">also rotating w<span class="_ _1"></span>ith the steerin<span class="_ _1"></span>g wheel and the in<span class="_ _1"></span>tegration </div><div class="t m0 x9 h5 y34 ff2 fs3 fc0 sc0 ls1a ws2e">of electron<span class="_ _1"></span>ic on rotating<span class="_ _1"></span> parts is <span class="_ _1"></span>definitely a blo<span class="_ _1"></span>cking </div><div class="t m0 x9 h5 y35 ff2 fs3 fc0 sc0 ls1b ws2f">point. An ex<span class="_ _0"></span>ample of BLDC motor and to<span class="_ _0"></span>rque sensor </div><div class="t m0 x9 h5 y36 ff2 fs3 fc0 sc0 lsa ws30">typical integr<span class="_ _1"></span>ation on th<span class="_ _1"></span>e steering co<span class="_ _1"></span>lumn is shown o<span class="_ _1"></span>n </div><div class="t m0 x9 h5 y37 ff2 fs3 fc0 sc0 ls1c ws31">the following draw<span class="_ _0"></span>ing. The BLDC exerts its torque t<span class="_ _0"></span>o the </div><div class="t m0 x9 h5 y38 ff2 fs3 fc0 sc0 ls9 ws32">steering column thro<span class="_ _1"></span>ugh a worm gear me<span class="_ _1"></span>chanism. </div><div class="t m0 xa h5 y39 ff2 fs3 fc0 sc0 ls5 ws0"> </div><div class="t m0 xb h9 y3a ff1 fs3 fc0 sc0 lsd ws33">Figure 1: Electric Pow<span class="_ _1"></span>er St<span class="_ _1"></span>eering </div><div class="t m0 x9 h5 y3b ff2 fs3 fc0 sc0 ls9 ws34">Moving Magnet Tec<span class="_ _1"></span>hnologies (MMT<span class="_ _1"></span>) has developed a<span class="_ _1"></span>n </div><div class="t m0 x9 h5 y3c ff2 fs3 fc0 sc0 ls1d ws35">innovative low cost structure answering all the </div><div class="t m0 x9 h5 y3d ff2 fs3 fc0 sc0 lsf ws36">requirements of torq<span class="_ _1"></span>ue sensing for EPAS. This torque </div><div class="t m0 x9 h5 y3e ff2 fs3 fc0 sc0 ls11 ws37">sensor is base<span class="_ _1"></span>d on a non-conta<span class="_ _1"></span>ct Hall effect princip<span class="_ _1"></span>le </div><div class="t m0 x9 h5 y3f ff2 fs3 fc0 sc0 ls11 ws38">and uses st<span class="_ _1"></span>andard progr<span class="_ _1"></span>ammable Hall ASICs available </div><div class="t m0 x9 h5 y40 ff2 fs3 fc0 sc0 ls16 ws39">on the mark<span class="_ _1"></span>et. MMT has a<span class="_ _1"></span>pplied for two<span class="_ _1"></span> patents </div><div class="t m0 x9 h5 y41 ff2 fs3 fc0 sc0 ls1e ws3a">regarding <span class="_ _1"></span>first a b<span class="_ _1"></span>asic structur<span class="_ _1"></span>e of this torqu<span class="_ _1"></span>e sensor an<span class="_ _1"></span>d </div><div class="t m0 x9 h5 y42 ff2 fs3 fc0 sc0 ls1f ws3b">then an op<span class="_ _0"></span>timized design [2] [3]<span class="_ _0"></span>. These torque sensor </div><div class="t m0 x9 h5 y43 ff2 fs3 fc0 sc0 ls3 ws3c">designs a<span class="_ _1"></span>re presente<span class="_ _1"></span>d hereafte<span class="_ _1"></span>r. </div><div class="t m0 xc h6 y44 ff2 fs4 fc0 sc0 ls20 ws3d">Torque sensor </div><div class="t m0 xd h6 y45 ff2 fs4 fc0 sc0 ls20 ws0">housing </div><div class="t m0 x1 h6 y46 ff2 fs4 fc0 sc0 ls21 ws3e">BLDC motor </div></div><div class="pi" data-data='{"ctm":[1.611639,0.000000,0.000000,1.611639,0.000000,0.000000]}'></div></div> </body> </html>
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