基于转子磁链模型的改进SMO滑模观测器，用于实现PMSM永磁同步电机的无传感器矢量控制 角度观测精度高，误差小，且可以有效解决传统SMO观测器的带载转速抖动问题，以及低转速下由于反电动势幅值太低导致
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基于转子磁链模型的改进SMO滑模观测器，用于实现PMSM永磁同步电机的无传感器矢量控制。角度观测精度高，误差小，且可以有效解决传统SMO观测器的带载转速抖动问题，以及低转速下由于反电动势幅值太低导致的转速估算精度低，同时可以实现电机转向切时的精确角度估算。。 <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90240986/2/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/90240986/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">基于转子磁链模型的改进<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器<span class="ff3">，</span>用于实现<span class="_ _0"> </span><span class="ff2">PMSM<span class="_ _1"> </span></span>永磁同步电机的无传感器矢量控制<span class="ff4">。</span>传感</div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0">器是实现永磁同步电机矢量控制的关键<span class="ff3">，</span>但传感器存在成本高<span class="ff4">、</span>故障率高<span class="ff4">、</span>安装复杂等问题<span class="ff4">。</span>因此<span class="ff3">，</span></div><div class="t m0 x1 h2 y3 ff1 fs0 fc0 sc0 ls0 ws0">开发一种无传感器的矢量控制方法对于提高永磁同步电机的控制性能和降低成本具有重要意义<span class="ff4">。</span></div><div class="t m0 x1 h2 y4 ff1 fs0 fc0 sc0 ls0 ws0">转子磁链模型是一种常用的无传感器矢量控制方法<span class="ff3">，</span>其基本原理是通过测量电机绕组端电压和电流<span class="ff3">，</span></div><div class="t m0 x1 h2 y5 ff1 fs0 fc0 sc0 ls0 ws0">根据电机模型推算出转子磁链信息<span class="ff3">，</span>从而实现对电机的精确控制<span class="ff4">。</span>然而<span class="ff3">，</span>传统的转子磁链模型控制方</div><div class="t m0 x1 h2 y6 ff1 fs0 fc0 sc0 ls0 ws0">法存在一些问题<span class="ff3">，</span>比如带载转速抖动<span class="ff4">、</span>低转速下的转速估算精度低等<span class="ff4">。</span></div><div class="t m0 x1 h2 y7 ff1 fs0 fc0 sc0 ls0 ws0">为了解决以上问题<span class="ff3">，</span>本文提出了一种基于转子磁链模型的改进<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器<span class="ff4">。</span>该观测器通过引入滑</div><div class="t m0 x1 h2 y8 ff1 fs0 fc0 sc0 ls0 ws0">模变量来实现对转子磁链的精确估算<span class="ff3">，</span>进而实现对电机的无传感器矢量控制<span class="ff4">。</span>相比传统的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>观测器</div><div class="t m0 x1 h2 y9 ff3 fs0 fc0 sc0 ls0 ws0">，<span class="ff1">改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器在角度观测精度和误差减小方面表现出更好的性能<span class="ff4">。</span></span></div><div class="t m0 x1 h2 ya ff1 fs0 fc0 sc0 ls0 ws0">首先<span class="ff3">，</span>该改进观测器在角度观测精度方面具有优势<span class="ff4">。</span>传统的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>观测器使用的是转子磁链模型中的磁</div><div class="t m0 x1 h2 yb ff1 fs0 fc0 sc0 ls0 ws0">链幅值作为观测变量<span class="ff3">，</span>但由于传感器的精度限制以及其他因素的影响<span class="ff3">，</span>磁链幅值的测量精度有限<span class="ff3">，</span>从</div><div class="t m0 x1 h2 yc ff1 fs0 fc0 sc0 ls0 ws0">而导致角度观测精度的下降<span class="ff4">。</span>而改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器通过引入滑模变量<span class="ff3">，</span>利用电机模型中的其他信</div><div class="t m0 x1 h2 yd ff1 fs0 fc0 sc0 ls0 ws0">息来估算转子磁链<span class="ff3">，</span>从而提高了角度观测精度<span class="ff4">。</span></div><div class="t m0 x1 h2 ye ff1 fs0 fc0 sc0 ls0 ws0">其次<span class="ff3">，</span>改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器还可以有效解决传统<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>观测器的带载转速抖动问题<span class="ff4">。</span>在永磁同步电</div><div class="t m0 x1 h2 yf ff1 fs0 fc0 sc0 ls0 ws0">机的控制过程中<span class="ff3">，</span>存在着带载转速抖动的现象<span class="ff3">，</span>这是由于传统<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>观测器对转子磁链的估算误差引起</div><div class="t m0 x1 h2 y10 ff1 fs0 fc0 sc0 ls0 ws0">的<span class="ff4">。</span>而改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器通过引入滑模变量<span class="ff3">，</span>并对估算误差进行补偿<span class="ff3">，</span>从而有效解决了带载转速</div><div class="t m0 x1 h2 y11 ff1 fs0 fc0 sc0 ls0 ws0">抖动问题<span class="ff4">。</span></div><div class="t m0 x1 h2 y12 ff1 fs0 fc0 sc0 ls0 ws0">此外<span class="ff3">，</span>改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器还可以提高低转速下的转速估算精度<span class="ff4">。</span>在低转速下<span class="ff3">，</span>电机的反电动势幅</div><div class="t m0 x1 h2 y13 ff1 fs0 fc0 sc0 ls0 ws0">值较低<span class="ff3">，</span>传统<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>观测器很难准确估算转速<span class="ff4">。</span>而改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器利用滑模变量的变化来推算</div><div class="t m0 x1 h2 y14 ff1 fs0 fc0 sc0 ls0 ws0">转速<span class="ff3">，</span>同时对反电动势幅值进行校正<span class="ff3">，</span>从而提高了低转速下的转速估算精度<span class="ff4">。</span></div><div class="t m0 x1 h2 y15 ff1 fs0 fc0 sc0 ls0 ws0">最后<span class="ff3">，</span>改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器还可以实现电机转向切换时的精确角度估算<span class="ff4">。</span>在电机转向切换时<span class="ff3">，</span>传统</div><div class="t m0 x1 h2 y16 ff1 fs0 fc0 sc0 ls0 ws0">观测器容易受到电机参数变化的影响<span class="ff3">，</span>从而导致角度估算不准确<span class="ff4">。</span>而改进的<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器利用滑模</div><div class="t m0 x1 h2 y17 ff1 fs0 fc0 sc0 ls0 ws0">变量的变化来跟踪转子磁链的变化<span class="ff3">，</span>从而实现对转向切换的精确角度估算<span class="ff4">。</span></div><div class="t m0 x1 h2 y18 ff1 fs0 fc0 sc0 ls0 ws0">综上所述<span class="ff3">，</span>基于转子磁链模型的改进<span class="_ _0"> </span><span class="ff2">SMO<span class="_ _1"> </span></span>滑模观测器是一种实现<span class="_ _0"> </span><span class="ff2">PMSM<span class="_ _1"> </span></span>永磁同步电机无传感器矢量控</div><div class="t m0 x1 h2 y19 ff1 fs0 fc0 sc0 ls0 ws0">制的有效方法<span class="ff4">。</span>通过引入滑模变量<span class="ff3">，</span>改进的观测器可以提高角度观测精度<span class="ff4">、</span>解决带载转速抖动问题<span class="ff4">、</span></div><div class="t m0 x1 h2 y1a ff1 fs0 fc0 sc0 ls0 ws0">提高低转速下的转速估算精度<span class="ff3">，</span>同时实现电机转向切换的精确角度估算<span class="ff4">。</span>这一方法在无传感器矢量控</div><div class="t m0 x1 h2 y1b ff1 fs0 fc0 sc0 ls0 ws0">制领域具有广泛的应用前景<span class="ff4">。</span></div></div><div class="pi" data-data='{"ctm":[1.568627,0.000000,0.000000,1.568627,0.000000,0.000000]}'></div></div>