Fault-tolerant containment control of uncertain nonlinear systems in strict-feedback form

2016 ◽  
Vol 27 (3) ◽  
pp. 497-511 ◽  
Author(s):  
Wei Wang ◽  
Dan Wang ◽  
Zhouhua Peng
Keyword(s):  
Nonlinear Systems ◽  
Fault Tolerant ◽  
Uncertain Nonlinear Systems ◽  
Feedback Form ◽  
Containment Control ◽  
Strict Feedback

Adaptive optimal fault-tolerant control scheme for a class of strict-feedback nonlinear systems

2018 ◽  
Vol 41 (4) ◽  
pp. 1079-1087 ◽  
Author(s):  
Jiao Dai ◽  
Chunsheng Liu ◽  
Jingliang Sun
Keyword(s):  
Nonlinear Systems ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Lyapunov Stability Theory ◽  
Adaptive Dynamic Programming ◽  
Fault Estimation ◽  
Control Law ◽  
Feedback Form ◽  
Estimation And Control ◽  
Strict Feedback

An active optimal fault-tolerant control (FTC) scheme for a class of nonlinear systems in strict-feedback form in the presence of partial loss of actuator effectiveness faults is proposed, using backstepping design technique and adaptive dynamic programming (ADP) algorithm to compensate the effects of failure. The proposed FTC scheme consists of feedforward controller that achieve the objective of fault-tolerant and feedback optimal controller, which can guarantee the performance index function is minimized. Since fault estimation and control law parameters are updated online, the control system has an adaptive failure compensation capability so as to reconfigure the control law in real time in response to failure indications. Based on Lyapunov stability theory, the whole closed-loop system is guaranteed to be ultimately uniformly bounded. Finally, the effectiveness of the proposed method is demonstrated by simulation.

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