Control of Permanent Magnet Linear Synchronous Motor Servo System Based on Periodic Learning Disturbance Observer

被引：0
|
作者：
Zhao X. [1 ]
Wu W. [1 ]
机构：
[1] School of Electrical Engineering Shenyang University of Technology, Shenyang
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2018年 / 33卷 / 09期
关键词：
Disturbance compensation; Periodic disturbance; Periodical learning disturbance observer; Permanent magnet linear synchronous motor; Tracking error;
D O I：
10.19595/j.cnki.1000-6753.tces.170266
中图分类号：
学科分类号：
摘要：
To solve the problem of periodic disturbance in repetitive motion tasks for permanent magnet linear synchronous motor (PMLSM) servo system, a novel periodic learning disturbance observer (PLDOB) was proposed. Firstly, the dynamic model of PMLSM with the uncertainties was established, and a lumped disturbance was estimated by the disturbance observer (DOB). It consists of parametric variation, unmodeled dynamics, friction force and force ripple; and then, it was updated for each time period by the periodic learning law. This scheme requires no mathematical models of disturbances and control laws of model parameters, and it was designed from the point of view of disturbances directly. Also, it is possible to compensate for disturbances above as well as below the bandwidth of the Q-filter of DOB. Finally, the system experimental results confirm that the proposed scheme is effective and feasible. The tracking and disturbance rejection performance of system are improved greatly. © 2018, Electrical Technology Press Co. Ltd. All right reserved.
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页码：1985 / 1993
页数：8
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