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Rotor position estimation method of permanent magnet synchronous motor based on high frequency signal injection and sliding mode observer

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5 Author(s)
Hui Wang ; Mech. Eng. Sch., Univ. of Sci. & Technol. Beijing, Beijing, China ; Changsong Wang ; Yafeng Deng ; Zhiyu Wang
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In the motion control of the sensorless permanent magnet synchronous motor system, the accurate detection of the rotor position at low or zero speed can improve control precision and enhance reliability. In this paper, a sliding mode observer is proposed based on the high frequency signal injection to estimate rotor position of the sensorless permanent magnet synchronous motor. Simulation results verify this sliding mode observer with good dynamic performance and strong robustness can accurately track the rotor position.

Published in:

Informatics in Control, Automation and Robotics (CAR), 2010 2nd International Asia Conference on  (Volume:1 )

Date of Conference:

6-7 March 2010