Journal of Systems Engineering and Electronics ›› 2008, Vol. 19 ›› Issue (1): 154-160.

• CONTROL THEORY AND APPLICATION • Previous Articles     Next Articles

New adaptive quasi-sliding mode control for nonlinear discrete-time systems

Wang Weihong1,2 & Hou Zhongsheng3   

  1. 1. School of Traffic and Transportation, Beijing Jiaotong Univ., Beijing 100044, P. R. China;
    2. Dept. of Automation, Taiyuan Univ. of Science & Technology, Taiyuan 030024, P. R. China;
    3. Advanced Control Systems Lab, School of Electronics and Information Engineering, Beijing Jiaotong Univ., Beijing 100044, P. R. China
  • Online:2008-02-21 Published:2010-01-03

Abstract:

A new adaptive quasi-sliding mode control algorithm is developed for a class of nonlinear discrete-time systems, which is especially useful for nonlinear systems with vaguely known dynamics. This design is model-free, and is based directly on pseudo-partial-derivatives derived on-line from the input and output information of the system using an improved recursive projection type of identification algorithm. The theoretical analysis and simulation results show that the adaptive quasi-sliding mode control system is stable and convergent.