基于新型滑模趋近律的PMSM速度控制

摘要/Abstract

摘要： 针对传统的永磁同步电机(PMSM)矢量控制系统速度环控制器鲁棒性低、抗扰性弱的缺点,研究了一种基于新型变指数多幂次趋近律的滑模控制器,该趋近律与传统趋近律相比收敛速度快、抖振小。对于系统存在的内、外部扰动影响控制精度的问题,设计了一种新型扩张滑模扰动观测器对扰动进行观测,并前馈至滑模控制器中,消除系统扰动带来的影响。对该算法进行了仿真验证,结果表明该算法具有一定的优越性。

关键词: 永磁同步电机, 新型趋近律, 扩张滑模扰动观测器, 滑模控制器

Abstract: Aiming at the shortcomings of low robustness and weak anti-interference of the traditional permanent magnet synchronous motor vector control system speed loop controller, a sliding mode speed controller based on a novel variable exponential multi-power reaching law is proposed.Compared with the traditional approach law, the newly one has a faster convergence rate and less chatting problem. For the problem that the internal and external disturbances in the system affect the control accuracy, a new type of extended sliding mode disturbance observer was designed to observe the disturbance and feed forward to the SMC to eliminate the impact of the system disturbance. The proposed algorithm is verified by simulation. The results show that it is effective and feasible and has certain advantages.

Key words: permanent magnet synchronous motor (PMSM), novel reaching law, extended sliding mode disturbance observer (ESMDOB), sliding mode controller (SMC)

中图分类号:

TM351

诸德宏, 汪瑶. 基于新型滑模趋近律的PMSM速度控制[J]. 微特电机, 2021, 49(2): 34-38.

ZHU De-hong, WANG Yao. Speed Control of PMSM Based on a Novel Sliding Mode Reaching Law[J]. Small & Special Electrical Machines, 2021, 49(2): 34-38.

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