Journal of Shanghai Jiaotong University ›› 2011, Vol. 45 ›› Issue (03): 403-407.

• Automation Technique, Computer Technology • Previous Articles     Next Articles

Sliding Mode Variable Structure Control Based
 on Multimodel Online Identification

 DUAN  Chao-Yang, ZHANG  Yan, SHAO  Lei, LEI  Hu-Min, CHEN  Zong-Ji   

  1. (1. Department of Automatic and Electrical Engineering, Beihang University, Beijing 100191, China;2. The Missile Institute, Air Force Engineering University, Sanyuan 713800, Shanxi, China)
  • Online:2011-03-30 Published:2011-03-30

Abstract:  In order to improve the control effect of traditional sliding mode variable structure control system for nonlinear uncertain systems, a new control scheme was proposed, which combines the multimodel online identification with sliding mode variable structure. Firstly, based on the inputoutput data, multiple local models was constructed by online clustering, and the local models are updated. Then, the model of the nonlinear system is given by the combination of all weighted local models. Finally, a sliding mode controller based on reaching law is designed according to the online indentificated system model. The simulation results show the robustness of the proposed scheme to the uncertainty of system model.

Key words: variable structure control, online identification, multimodel, nonlinear system

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