基于LMI的直线伺服滑模位移跟踪控制

doi:10.19595/j.cnki.1000-6753.tces.171676

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Abstract When the linear servo system was used in some high-response and high-accuracy occasion, permanent magnet linear synchronous motor’s time scale of the dynamic process of the current was close to that of its speed. Hence, if the three closed-loop PID control method based on traditional vector control was employed for static decoupling, tracking performance would be compromised due to non-linear coupling between current and speed. To address this problem, a LMI-based sliding mode control scheme was proposed in this paper for displacement tracking control in the linear servo system. The electronic sub-system and the mechanical sub-system were controlled as a whole. The sliding mode control law was designed via linear matrix inequalities (LMIs).The extended sliding mode observer was designed to observe the load disturbance robustly for ensuring the system’s tracking performance. Experiments are performed to compare with the three closed-loop PID control method. Results demonstrate that the proposed method achieves more robust performance and faster dynamic response.

Key words： Linear matrix inequality sliding mode control extended sliding mode observer linear servo system permanent magnet linear synchronous motor

Received: 12 December 2017 Published: 10 January 2019

PACS:	TM359.4
	TP273

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	Articles by authors
	Sun Yibiao
	Zhong Yuan
	Liu Chunfang

Cite this article:

Sun Yibiao,Zhong Yuan,Liu Chunfang. LMI-Based Sliding Mode Displacement Tracking Control for Permanent Magnet Linear Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2019, 34(1): 33-40.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.171676 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I1/33

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