摘要
针对高精度直接驱动的永磁直线同步电动机伺服系统,研究其端部效应等不确定性因素对系统伺服性能的影响,在分析因端部效应引起的与位移相关的周期性推力波动产生原理的基础上,从控制角度出发,提出了一种利用时变周期信号的重复控制来抑制推力波动的新型控制策略,首先将时变的时间域的信号,变换为具有固定周期的位置域信号,再对其进行重复控制器的设计,从而达到抑制推力波动和速度脉动的目的,最后,通过半实物仿真平台DSPACE实现了该控制算法,理论分析和实验结果验证了所提出的控制方案的有效性。
For the high precision direct drive permanent magnet linear synchronous motor （PMLSM） servo system, the servo performance is affected by the position-dependent periodic thrust ripple caused by ending effect. Based on repetitive control of time-varying periodic signals, a new method of restraining thrust ripple for PMLSM is proposed, and the principle of cogging force is analyzed. The idea is to transform the time-varying periodic thrust ripple in t-domain to the signals defined in the x-domain and moreover to design a repetitive controller, so as to restrain the thrust ripple and speed vibration. Experimental evaluations of the proposed scheme are carried out on a DSPACE controlled PMLSM drive platform, the simulation and experiment results show that the control scheme is effective.
出处
《控制工程》
CSCD
北大核心
2016年第2期233-237,共5页
Control Engineering of China
基金
湖南省教育厅科学研究项目(14C0272)
湖南省自然科学基金(2015JJ2014)
关键词
永磁直线同步电动机
端部效应
时变信号
重复控制器
Permanent magnet linear synchronous motor
ending effect
time-varying
repetitive controller
