微特电机 ›› 2021, Vol. 49 ›› Issue (10): 36-39.

• 驱动控制 • 上一篇    下一篇

基于改进快速幂次趋近律的PMSM无速度传感器控制

邓超, 王英   

  1. 大连交通大学 电气信息工程学院,大连 116021
  • 收稿日期:2021-08-03 出版日期:2021-10-28 发布日期:2021-10-20
  • 作者简介:邓超(1995—),男,硕士研究生,研究方向为电机控制系统。

Speed Sensorless Control of Permanent Magnet Synchronous Motor Based on Improved Fast Power Reaching Law

DENG Chao, WANG Ying   

  1. College of Electrical Information Engineering, Dalian Jiaotong University, Dalian 116021, China
  • Received:2021-08-03 Online:2021-10-28 Published:2021-10-20

摘要: 设计了一种快速幂次趋近率改进控制算法,该趋近律在系统状态由滑模面较远处到达滑模面附近的过程中加入了幂次项的作用,使得动态响应过程中收敛速度得到一定程度提高,同时使用双曲正切函数代替了趋近律中的开关函数,可以在一定程度上削弱滑模动态运行过程中的抖振。仿真结果表明,改进型趋近律比快速幂次趋近率起动过程更加平稳,对转速跟踪的能力强,且抖振得到了抑制。

关键词: 永磁同步电机, 无速度传感器控制, 滑模速度控制器, 快速幂次趋近律

Abstract: An improved control algorithm of adaptive adjustment of power term coefficient was designed. The reaching law added power term in the process of the system state from far to near the sliding surface, which improved the convergence speed in the process of dynamic response to a certain extent. The hyperbolic tangent function was used to replace the switching function in the reaching law, the chattering of sliding mode can be reduced to a certain extent. The simulation results show that, compared with the fast power reaching law, the starting process of the improved reaching law is more stable, the speed tracking ability is strong, and the chattering is suppressed.

Key words: permanent magnet synchronous motor(PMSM), speed sensorless control, sliding mode speed controller, fast power reaching law

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