Control of Permanent Magnet Synchronous Motor Based on Sliding Mode Observer

Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 238)


In order to achieve the sensor-less vector control of permanent magnet synchronous motor and estimate the position and speed of motor rotor, a new technology of detecting sensor is proposed by using the sliding mode variable structure theory. By introducing a saturation function in replace of the traditional switching function, the technology solves the problem of chattering in high frequency. A model is established in the environment of MATLAB/SIMULINK to simulate the system through theoretical analysis. The simulation shows that we can estimate position and speed of PMSM precisely through the sliding mode observer, and we can also gain a better result in the experiment by using the new technology. Finally, we can conclude that we can improve the robustness of the system by changing certain parameters and the estimation of the position and speed by using the sliding mode is effective (Canadian Conference on Electrical and Computer Engineering, vol. 2:689–692, 1994).


Slide Mode Control Switching Function Saturation Function Rotor Position Permanent Magnet Synchronous Motor 
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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.College of Electrical and Information EngineeringHunan UniversityHunanChina

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