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| Rotor Position Measuring Method for Magnetic Levitation High Speed PMSM Based on Fuzzy Sliding Mode Observer |
| Zhang Hongshuai1, Wang Ping1, Han Bangcheng2, 3, Cheng Jinxu4 |
1. China University of Petroleum QingDao 266580 China;
2. Science and Technology on Inertial Laboratory Beihang University Beijing 100191 China;
3. Fundamental Science on Novel Inertial Instrument & Navigation System Technology Laboratory Beihang University Beijing 100191 China;
4. The Supply Department of Shengliyoutian Dongying 257100 China |
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Abstract Focused on the chattering problem of the sliding mode observer(SMO) when the motor speed is low, this paper proposes a kind of magnetic levitation high speed PMSM(HSPMSM) rotor position measuring method based on fuzzy SMO. This method can suppress the chattering problem of the SMO which used the fuzzy control system to change the gain of the SMO. It is more powerful than the SMO based on saturation function which is analysed in theory. In this paper, simulation and experiment with a 4kW magnetic levitation high speed permanent magnet synchronous motor are carried out and the position estimation error is analyzed and a compensation method is proposed. The results demonstrate that the fuzzy SMO can effectively estimate the magnetic levitation high speed PMSM rotor position in a wide speed range.
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Received: 27 January 2013
Published: 05 August 2014
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2014, Vol. 29 
