永磁直线同步电机推力波动约束

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Abstract Force ripples such as slot force, end force and normal force are key factor which affect the properties of permanent magnet linear synchronous motor(PMLSM). In order to obtain a high speed and high precision direct driver system, a finite element model of PMLSM is created and the slot force is analysed firstly. The slot force curve is fitted and obtained using Fourier series secondly. Then, a current predictive model is designed to compensate the thrust ripple due to the slot force. Furthermore, a disturbance observer is designed to compensate the thrust ripples due to other elements. Experiments demonstrate that the compensating control theory and analysis method are effective, and the obtained formula can be utilized to compensate thrust ripples in practical application and improve the motion performance of PMLSM.

Key words： Permanent magnet linear synchronous motor slot force normal force field-oriental control

Received: 27 June 2011 Published: 20 March 2014

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TP13

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	Lu Huacai
	Jiang Ming
	Guo Xingzhong
	Chen Qigong

Cite this article:

Lu Huacai,Jiang Ming,Guo Xingzhong等. Thrust Ripple Suppression for Permanent Magnet Linear Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2012, 27(3): 128-132.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I3/128

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