直接磁悬浮永磁直线电动机的鲁棒控制

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Abstract In order to eliminate the friction force of linear motor numerical control machine tool feed system, a new direct magnetic suspension permanent magnet linear synchronous motor(PMLSM) is put forward in this paper. First, the motor is modeled and analyzed by finite element software Ansoft, and the results show that the motor can generate the suspension force and thrust respectively and the forces could be controlled. Vector control is applied to two sets of windings, and the thrust and the suspension force can achieve the decoupling. Then, the motor servo control system could be divided into two independent subsystems. The robust servo control model of suspensions subsystem and feed subsystem is established for realization of the special requirements. Two-degree-of-freedom robust control is used for suspensions subsystem. The results of simulation indicate that the system with this controller has a good performance for restraint disturbance as well as for track of input signal. For feed subsystem presents H_∞ robust control strategy based on LMI. The results show that controller based on LMI had excellent disturbance attenuation performance and model uncertainty attenuation performance. The system meets the requirement of robustness and rapidity for the friction-free feed of NC machine tools.

Key words： Magnetic suspension numerical control machine tool permanent magnet linear synchronous motor two-degree-of-freedom linear matrix inequality robust control

Received: 02 November 2010 Published: 07 March 2014

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TM351

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	Lan Yipeng
	Zhang Wu
	Zhang Fengge

Cite this article:

Lan Yipeng,Zhang Wu,Zhang Fengge. Robust Control of Direct Magnetic Suspension Permanent Magnet Linear Motor[J]. Transactions of China Electrotechnical Society, 2011, 26(5): 132-137.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2011/V26/I5/132

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