基于干扰观测器的永磁同步电机Smith电流控制  

Smith current predictive control of permanent magnet synchronous motor based on disturbance observe

作　　者：胡文婷 陈超波[1] 李长红[2] 高嵩[1] 郎宝华[1] Hu Wenting;Chen Chaobo;Li Changhong;Gao Song;Lang Baohua(Xi'an Technological University,Xi'an710021,China;Northwest Institute of Mechanical and Electrical Engineering,Xianyang 712099,China)

机构地区：[1]西安工业大学,西安710021 [2]西北机电工程研究所,咸阳712099

出　　处：《国外电子测量技术》2022年第10期164-169,共6页Foreign Electronic Measurement Technology

基　　金：陕西省技术创新引导专项(基金)计划项目(2022QFY01-16);陕西省重点研发计划项目(2021GY-149)资助。

摘　　要：针对在永磁同步电机伺服系统中传统控制算法的电流环因延时引起的系统响应速度以及稳定性降低等问题,提出一种改进的Smith预估控制算法。首先,分析永磁同步电机伺服系统电流环的主要延时因素,并建立含有延时环节的电流环数学模型,分析延时系统稳定性的影响,指出延时补偿的必要性;其次,针对传统Smith电流预估控制器的结构敏感,易受扰动影响的缺点,使用干扰观测器(DOB)和Smith控制结合的电流控制器,并给出参数整定规则;最后,通过仿真验证所提算法。实验结果表明,该方法可以提高电流环的稳定性,改善抗扰性能,有利于改善永磁同步电机伺服系统的整体性能。Aiming at the problems of response speed and stability reduction of the current loop system of the traditional control algorithm in the permanent magnet synchronous motor servo system, this paper proposes an improved Smith prediction control algorithm to solve the problem. Firstly, the main delay factors affecting the current loop of the permanent magnet synchronous motor servo system are analyzed, and the mathematical model of the current loop with the delay link is established. Secondly, this paper proposes a current controller that combines disturbance observer and Smith control, and give the parameter tuning rules. It can overcome the structural sensitivity and disturbance-susceptibility of the classical Smith current controller. Finally, compared with traditional Smith control, the simulation and experimental results show that the proposed method can effectively improve the stability of the current loop and anti-interference performance of the system, and then improve the overall performance of the permanent magnet synchronous motor servo system.

关 键 词：永磁同步电机 电流控制器 SMITH预估控制 干扰观测器 

分 类 号：TM341[电气工程—电机]