基于扩展滑模观测器的永磁同步电动机无传感器控制

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摘要针对传统滑模观测器在估计电机转速时存在的抖动问题, 本文通过永磁同步电机扩展状态方程以及扩展滑模观测器, 将滑模控制和模型参考自适应结合在一起, 来提取电机转速。从仿真和实验两方面, 对新方法与传统滑模观测器方法作了详细的比较, 结果验证了新方法可以避免传统滑模参数估计时存在的抖动问题, 同时具有良好的动静态性能以及更高的估计精度。

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	李冉
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关键词 ：永磁同步电动机, 反电动势, 滑模观测器, 扩展滑模观测器, 模型参考自适应系统

Abstract：Aiming at the chattering problem arising from the estimation of rotor velocity by using traditional sliding mode observer(SMO), the paper combines sliding mode control with model reference adaptive systems by the extended state equations of permanent magnet synchronous motor(PMSM) and the equations of extended sliding mode observer of PMSM, and then the new estimation method of rotor velocity is presented. The detailed comparison between the proposed method and the traditional one is introduced according to simulation analysis and experimental validation. The simulation and experimental results show the superiority of the proposed method which avoid the chattering problem of the traditional one and better estimated precision, moreover, good dynamic and static performance are achieved.

Key words： Permanent magnet synchronous motor(PMSM) back electromotive force sliding mode observer(SMO) extended sliding mode observer model reference adaptive systems(MRAS) self-adaptive rule Lyapunov

收稿日期: 2010-12-02 出版日期: 2014-03-20

PACS:

TP273

基金资助:浙江省自然科学基金资助项目(Y108766)。

作者简介: 李冉男, 1980生, 博士研究生, 研究方向是现代电机控制技术、伺服系统设计及其驱动控制。赵光宙男, 1946年生, 教授, 博士生导师, 研究方向是复杂系统的分析与控制, 电力传动中的先进控制技术。

引用本文:

李冉, 赵光宙, 徐绍娟. 基于扩展滑模观测器的永磁同步电动机无传感器控制[J]. 电工技术学报, 2012, 27(3): 79-85. Li Ran, Zhao Guangzhou, Xu Shaojuan. Sensorless Control of Permanent Magnet Synchronous Motor Based on Extended Sliding Mode Observer. Transactions of China Electrotechnical Society, 2012, 27(3): 79-85.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I3/79

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