Journal of Shanghai Jiaotong University ›› 2015, Vol. 49 ›› Issue (06): 837-841.

• Automation Technique, Computer Technology • Previous Articles     Next Articles

Terminal Sliding Mode Observer Based Fault Reconstruction for Underwater Vehicle Thruster

CHU Zhenzhong1,ZHU Daqi1,ZHANG Mingjun2   

  1. (1. College of Information Engineering, Shanghai Maritime University, Shanghai 201306, China;2. College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China)
  • Received:2014-12-15 Online:2015-06-29 Published:2015-06-29

Abstract:

Abstract: A fault reconstruction method based on terminal sliding mode observer was proposed in this paper. In the traditional sliding mode observer, the estimated error of unmeasured state is asymptotic convergence, which affects the timeliness of thruster fault reconstruction. In response to the above problem, the property of finite time convergence of terminal sliding mode was used to build a terminal sliding mode observer to ensure that all of the state estimation errors converge in a finite time. Then the thruster fault was reconstructed by using the equivalent output error infection method. Finally, the proposed method was validated by simulation.

Key words: underwater vehicle, terminal sliding mode observer, thruster, fault reconstruction

CLC Number: