吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (6): 1874-1880.doi: 10.13229/j.cnki.jdxbgxb201506022

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Decentralized fault-tolerant control based on multi-step time delay for reconfigurable manipulator with concurrent failures

LI Yuan-chun1, ZHOU Fan1, MA Tian-hao1, ZHAO Bo1,2   

  1. 1.College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun, 130012, China;
    2.State Key Laboratory of Management and Control for Complex Systems, Institute of Automation, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2014-04-16 Online:2015-11-01 Published:2015-11-01

Abstract: According to Lyapunov stable theory and the modularity of reconfigurable manipulator, a decentralized backstepping neural network controller is designed for the fault free system, and the adaptive neural network system is employed to compensate the reduced control accuracy from the interconnection term. An augmented subsystem is obtained by introducing a filter, which maps the sensor fault into pseudo actuator fault, and then the multi-step time-delay technique is adopted to compensate the concurrent failures and realize the fault-tolerant. Simulations illustrated by two 2-DOF reconfigurable manipulators with different configurations demonstrate the effectiveness of the proposed scheme.

Key words: automatic control technique, reconfigurable manipulator, decentralized fault-tolerant control, multi-step time-delay, concurrent failure

CLC Number: 

  • TP273
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[1] ZHAO Bo, LI Cheng-hao, LI Yuan-chun. Online fault estimation based on decentralized fault-tolerant control for reconfigurable manipulators [J]. 吉林大学学报(工学版), 2014, 44(6): 1729-1735.
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[3] ZHU Ming-chao,LI Yuan-chun . Decentralized adaptive sliding mode control for reconfigurable manipulators using fuzzy logic
[J]. 吉林大学学报(工学版), 2009, 39(01): 170-176.
[4] Li Ying,Zhu Ming-chao,Li Yuan-chun . Neurofuzzy compensation control for reconfigurable manipulator [J]. 吉林大学学报(工学版), 2007, 37(01): 206-211.
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