摘要
传统的比例积分微分(proportion integral derivative,PID)控制由于控制方法简单,被广泛应用于永磁同步电机(permanent magnet synchronous motor,PMSM)调速系统当中,但其难以满足高精度的控制要求。传统的滑模控制(sliding mode control,SMC)虽然在一定程度能达到较好的控制效果,但需要对速度信号进行微分,而这一过程会引入高频扰动。为了实现PMSM的高精度控制,该文设计了一种积分型滑模变结构控制器,针对负载扰动的问题,依据龙伯格线性观测器的原理设计了负载转矩观测器,并将其观测值反馈到滑模控制器的设计中。通过仿真及实验可以看出,负载观测器能跟踪实际负载的变化,滑模控制器使系统在负载波动时转速保持不变。因此,基于负载转矩观测器设计的积分型滑模控制器使系统具有快速性、无超调等优点,且对负载扰动具有较强的鲁棒性。
The traditional proportion integral derivative （PID） control is widely used in permanent magnet synchronous motor （PMSM） control systems for its simplicity, but it is difficult to meet the need of high performance. Though the traditional sliding mode control （SMC） has a good performance in a certain extent, it needs the speed differential signals which will cause high frequency disturbances. In order to realize high precision control, this paper designed a kind of integral type sliding mode variable structure controller and a load torque observer. The observer can observe the change of the load torque rapidly. And the sliding mode controller can keep the speed constant. System simulation and experimental results show that the system has the advantages of rapidity, no over-shoot and resistance to load disturbance.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2014年第3期431-437,共7页
Proceedings of the CSEE
关键词
永磁同步电机
比例积分微分控制
积分型滑模控
制
负载转矩观测器
permanent magnet synchronous motor（PMSM）
proportion integral derivative （PID） control
integraltype sliding mode control
load torque observer
