圆筒型永磁直线同步电机用线性霍尔位置检测的误差补偿

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Abstract Position detection based on linear hall sensors for permanent magnetic linear synchronous motor exists error. To tackle this problem, a compensation method combing offline calibration and online Kalman filter was proposed. Errors of hall sensor signals could be classified as DC offset, amplitude imbalance and containing harmonics. The former two factors generate 1st and 2nd order errors in position detection result, and are compensated by offline calibrating use the offset error and amplitude error and ratio achieved by two hall signals. Harmonics in hall sensor signals are caused by air-gap magnetic distortion, the magnetic harmonic content is analyzed by using finite element simulation, coming to the conclusion that magnetic distortion would generate 4th order error in position detection result. So, online Kalman filter was utilized to extract fundamental component from hall signals and to eliminate the influence of harmonics. Experimental results show that the position detection error is reduced by 81%, indicating the validity of the proposed compensation method.

Key words： Permanent magnet linear synchronous motor linear hall sensors error compensation finite element analysis Kalman filter

Received: 04 November 2015 Published: 22 March 2017

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TM341

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	Articles by authors
	Yan Leyang
	Ye Peiqing
	Zhang Yong
	Zhang Hui

Cite this article:

Yan Leyang,Ye Peiqing,Zhang Yong等. Error Compensation of Linear Hall Based Position Detection for Tubular Permanent Magnetic Linear Synchronous Motor[J]. Transactions of China Electrotechnical Society, 2017, 32(5): 26-32.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I5/26

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