吉林大学学报(工学版) ›› 2013, Vol. 43 ›› Issue (03): 688-694.doi: 10.7964/jdxbgxb201303022

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Global high-order sliding mode observer for induction motor

SHI Hong-yu1, FENG Yong1, ZHANG Niao-na2,3   

  1. 1. College of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin 150001, China;
    2. Department of Automation, Changchun University of Technology, Changchun 130012, China;
    3. College of Automotive Engineering, Jilin University, Changchun 130022, China
  • Received:2012-03-27 Online:2013-05-01 Published:2013-05-01

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Abstract: A global sliding mode observer for induction motor based on high-order sliding mode was proposed. The model is applied for precisely identifying the rotor velocity and the rotor flux of the induction motor. A global sliding mode surface was designed to improve the robustness of the observer and to implement the observer in the sliding motion through the entire response. A high-order sliding mode control law was utilized to obtain the smooth equivalent control signal directly. The control signal of the sliding mode observer can be applied to state observation, so that the better observing precision is realized. Simulation and experiment results show that the proposed sliding mode observer can eliminate the chattering phenomenon effectively, provide high observing precision. Moreover, the proposed observer is robust to load disturbance and internal parameter perturbation.

Key words: automatic control technology, induction motor, state observer, global sliding mode, high-order sliding mode

CLC Number: 

  • TP273
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