Electronic Science and Technology ›› 2020, Vol. 33 ›› Issue (10): 45-50.doi: 10.16180/j.cnki.issn1007-7820.2020.10.008

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Design of Sensorless Control System for PMSM Based on Luenberger Observer

YAO Ying,LI Wei,JIN Hai,GUO Jie   

  1. School of Information Science and Technology,Zhejiang Sci-Tech University, Hangzhou 310018,China
  • Received:2019-07-27 Online:2020-10-15 Published:2020-10-20
  • Supported by:
    National Natural Science Foundation of China(51475435)


Permanent magnet synchronous motor system based on low-resolution Hall position sensor has low estimation accuracy and slow response speed at medium and high speeds. To solve these problems, based on mathematical model of permanent magnet synchronous motor, the Luenberger observer and phase-locked loop are combined to propose a sensorless control algorithm of permanent magnet synchronous motor. The simulation model of the control system is established by MATLAB/Simulink tool to verify the feasibility of the control system. The superiority of the Luenberger observer over the Hall position sensor is verified by building the physical platform based on PAC5232. The experimental results show that the sensorless control system effectively improves the response speed and estimation accuracy of the system, making it to better track the rotor speed and rotor position information.

Key words: permanent magnet synchronous motor, luenberger observer, phase-locked loop, Hall position sensors, sensorless control, PAC5232

CLC Number: 

  • TP273