Robust adaptive fuzzy fault-tolerant control for a class of non-lower-triangular nonlinear systems with actuator failures

2016 ◽  
Vol 336 ◽  
pp. 60-74 ◽  
Author(s):  
Huanqing Wang ◽  
Xiaoping Liu ◽  
Peter Xiaoping Liu ◽  
Shuai Li
Keyword(s):  
Nonlinear Systems ◽  
Fault Tolerant ◽  
Fault Tolerant Control ◽  
Adaptive Fuzzy ◽  
Actuator Failures ◽  
Lower Triangular ◽  
Robust Adaptive

An Output Feedback Based Adaptive Robust Fault Tolerant Control Scheme for a Class of Nonlinear Systems

2009 ◽  
Author(s):  
Shreekant Gayaka ◽  
Bin Yao
Keyword(s):  
Nonlinear Systems ◽  
Output Feedback ◽  
Fault Tolerant ◽  
Sliding Mode ◽  
A Priori ◽  
Fault Tolerant Control ◽  
Modeling Uncertainties ◽  
Learning Capabilities ◽  
Robust Adaptive ◽  
Priori Information

In this paper we present an output feedback based Adaptive Robust Fault Tolerant Control (ARFTC) strategy to solve the problem of output tracking in presence of actuator failures, disturbances and modeling uncertainties for a class of nonlinear systems. The class of faults addressed here include stuck actuators, actuator loss of efficiency or a combination of the two. We assume no a priori information regarding the instant of failure, failure pattern or fault size. The ARFTC combines the robustness of sliding mode controllers with the online learning capabilities of adaptive control to accommodate sudden changes in system parameters due to actuator faults. Comparative simulation studies are carried out on a nonlinear hypersonic aircraft model, which shows the effectiveness of the proposed scheme over back-stepping based robust adaptive fault-tolerant control.

scholarly journals Robust Adaptive Fault-Tolerant Control of Stochastic Systems with Modeling Uncertainties and Actuator Failures

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Wenchuan Cai ◽  
Lingling Fan ◽  
Yongduan Song
Keyword(s):  
Stochastic Systems ◽  
Control Method ◽  
Fault Tolerant ◽  
Negative Impact ◽  
Fault Tolerant Control ◽  
Fault Detection And Diagnosis ◽  
Lyapunov Theory ◽  
Actuator Failures ◽  
Modeling Uncertainties ◽  
Robust Adaptive

This paper deals with the problem of fault-tolerant control (FTC) of uncertain stochastic systems subject to modeling uncertainties and actuator failures. A robust adaptive fault-tolerant controller design method based on stochastic Lyapunov theory is developed to accommodate the negative impact on system performance arising from uncertain system parameters and external disturbances as well as actuation faults. There is no need for on-line fault detection and diagnosis (FDD) unit in the proposed FTC scheme, which not only simplifies the design process but also makes the implementation inexpensive. Numerical examples are provided to validate and illustrate the benefits of the proposed control method.

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