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Journal of Sensors
Volume 2014 (2014), Article ID 816421, 7 pages
Research Article

Research on an Improved Method for Permanent Magnet Synchronous Motor

1School of Electrical and Electronic Engineering, North China Electric Power University, Baoding, Hebei 071003, China
2Department of Automation, North China Electric Power University, Baoding, Hebei 071003, China
3School of Management and Economics, Beijing Institute of Technology, Beijing 100081, China

Received 20 June 2014; Revised 19 July 2014; Accepted 14 August 2014; Published 1 September 2014

Academic Editor: Tinggui Chen

Copyright © 2014 Yingpei Liu et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


In permanent magnet synchronous motor (PMSM) traditional vector control system, PI regulator is used in the speed loop, but it has some defects. An improved method of PMSM vector control is proposed in the paper. The active-disturbance rejection control (ADRC) speed regulator is designed with the input signals of given speed and real speed and the output of given stator current q coordinate component. Then, in order to optimize ADRC controller, the least squares support vector machines (LSSVM) optimal regression model is derived and successfully embedded in the ADRC controller. ADRC observation precision and dynamic response of the system are improved. The load disturbance effect on the system is reduced to a large extent. The system anti-interference ability is further improved. Finally, the current sensor CSNE151-100 is selected to sample PMSM stator currents. The voltage sensor JLBV1 is used to sample the stator voltage. The rotor speed of PMSM is measured by mechanical speed sensor, the type of which is BENTLY 330500. Experimental platform is constructed to verify the effectiveness of the proposed method.