微特电机 ›› 2018, Vol. 46 ›› Issue (2): 7-10.doi: 1004-7018-46-2-7-10

• 理论研究 • 上一篇    下一篇

永磁同步电动机电流环分数阶滑模控制研究

钱春贵1,左付山2   

  1. 1. 扬州工业职业技术学院,扬州 225000
    2. 南京林业大学,南京 210037
  • 收稿日期:2016-03-16 出版日期:2018-02-28 发布日期:2018-02-28
  • 作者简介:钱春贵(1987-),男,硕士,助教。

Variable Fractional Order Sliding Mode Control of PMSM based on Constant Reaching Law

 QIAN Chun-gui1,ZUO Fu-shan2   

  1. 1. Yangzhou Polytechnic Institute,Yangzhou 225000,China
    2. Nanjing Forestry University,Nanjing 210037,China
  • Received:2016-03-16 Online:2018-02-28 Published:2018-02-28

摘要:

针对等速趋近律滑模变结构在永磁同步电动机电流环控制中的抖振问题,提出了变阶次分数阶等速趋近律滑模变结构控制。利用分数阶微分方程对等速趋近律增益系数进行“放大”和“缩小”,远离滑模面时对趋近律增益进行放大以加快响应速度,靠近滑模面时对趋近律增益进行缩小从而对滑模中的抖振进行抑制。仿真结果表明变阶次分数阶等速滑模控制器在保证传统等速趋近律滑模控制器控制效果的同时,可以有效降低系统的抖振现象。

关键词: 永磁同步电动机, 电流环, 分数阶, 滑模控制, 等速趋近律

Abstract:

To solve the problem of chattering caused by the switching gain of constant reaching law used in the control of permanent magnet synchronous motor (PMSM) current loop, a variable fractional order sliding mode control based on constant reaching law was proposed. When the system state was far away from the sliding-mode surface, fractional calculus was used to zoom in the switching gain to accelerate the state to the sliding-mode surface. When the system state was so close to the sliding-mode surface, the switching gain was zoomed out by changing the power of fractional calculus to weaken the chattering. Simulations show that the variable fractional order sliding- mode controller based on constant reaching law has the same function but lower chattering value compared with traditional constant reaching law.

Key words: permanent magnet synchronous motor (PMSM), current loop, fractional order, sliding-mode control, constant reaching law

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