微特电机 ›› 2020, Vol. 48 ›› Issue (9): 50-53.

• 驱动控制 • 上一篇    下一篇

基于改进二阶滑模控制器的PMSM控制策略研究

熊化亮, 沈艳霞   

  1. 江南大学 物联网技术教育部工程研究中心,无锡 214122
  • 收稿日期:2019-08-27 出版日期:2020-09-28 发布日期:2020-09-21
  • 作者简介:熊化亮(1994—),男,硕士研究生,研究方向为永磁同步电机、工业物联网通信。

Study on PMSM Control Strategy Based on Improved Second Order Sliding Mode Controller

XIONG Hua-liang, SHEN Yan-xia   

  1. Engineering Research Center of the Ministry of Education for Internet of Things Technology, Jiangnan University, Wuxi 214122, China
  • Received:2019-08-27 Online:2020-09-28 Published:2020-09-21

摘要: 永磁同步电机矢量控制系统中,PI控制器对永磁同步电动机参数变化敏感,严重影响控制性能。对传统滑模观测器(SMO)进行改进,使得增益随电机参数自适应变化,将SGN函数改成连续函数SIGN函数,设计Super_twisting控制器,在实现转速估计的同时,进一步减小系统的误差。仿真表明,自适应增益观测器能够准确地观测转速和位置,与PI控制相比,基于Super-twisting滑模控制器的电机转矩和转速脉动减小,响应速度更快。

关键词: 永磁同步电机, 矢量控制, 滑模观测器, super-twisting滑模控制器, 自适应增益

Abstract: In PMSM vector control system, PI controller is sensitive to the change of PMSM parameters, which seriously affects the control performance. The traditional sliding mode observer (SMO) was improved, it's gain varies with the motor parameters, which realizes the speed estimation. The sgn function was changed to a continuous function the sign function. Super-twisting controller was designed to further reduce the error of the system. Simulation results showed that the adaptive gain observer can accurately observe the speed and position of the motor. Compared with the PI controller system, the motor torque and speed pulsation decreased and the response speed was faster with the super-twisting sliding mode controller.

Key words: permanent magnet synchronous motor (PMSM), vector control, sliding mode observer (SMO), super-twisting sliding mode controller (ST-SMC), adaptive gain (AG)

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