Electronic Science and Technology ›› 2022, Vol. 35 ›› Issue (2): 59-66.doi: 10.16180/j.cnki.issn1007-7820.2022.02.010

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Research on Induction Motor Control Based on Improved Sliding Mode Disturbance Observer

YUAN Qingqing,QU Hanfei   

  1. School of Mechanical Engineering,University of Shanghai for Science and Technology,Shanghai 200093,China
  • Received:2020-10-26 Online:2022-02-15 Published:2022-02-24
  • Supported by:
    National Key R&D Program of China(2018YFB0104603);Shanghai Youth Science and Technology Talents Sailing Program(18YF1418300)


In view of the poor control performance of traditional PI regulators when the load is drastically changed, and the use of traditional sliding mode observers has serious chattering problems, taking induction motors as the research object, a real-time disturbance compensation scheme based on sliding mode observer and traditional PI regulator is proposed in this study. The system disturbance is observed and estimated in real time through the improved disturbance observer, and the estimated disturbance is fed back to the PI regulator for feedforward compensation, thereby effectively improving the motor control performance and improving the chattering phenomenon. A simulation platform based on MATLAB and an experimental platform of TMS320F28335 DSP are established, and the improved sliding mode observer disturbance feedforward compensation method is compared with conventional single PI adjustment and conventional sliding mode observer disturbance compensation. The experimental results show that the speed overshoot is optimized by 0.5%, and the response time is 30 ms, which verifies the effectiveness and feasibility of the proposed scheme.

Key words: induction motor, load disturbance, vector control, speed loop optimization, improved sliding mode observer, disturbance compensation, PI regulation, new approach law

CLC Number: 

  • TP273