Output feedback based adaptive robust fault-tolerant control for a class of uncertain nonlinear systems  

作　　者：Shreekant Gayaka Bin Yao 

机构地区：[1]Ray W. Herrick Labs, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907, USA

出　　处：《Journal of Systems Engineering and Electronics》2011年第1期38-51,共14页系统工程与电子技术（英文版）

基　　金：supported by the US National Science Foundation (CMMI-1052872);the Ministry of Education of China

摘　　要：An adaptive robust approach for actuator fault-tolerant control of a class of uncertain nonlinear systems is proposed.The two chief ways in which the system performance can degrade following an actuator-fault are undesirable transients and unacceptably large steady-state tracking errors.Adaptive control based schemes can achieve good final tracking accuracy in spite of change in system parameters following an actuator fault,and robust control based designs can achieve guaranteed transient response.However,neither adaptive control nor robust control based fault-tolerant designs can address both the issues associated with actuator faults.In the present work,an adaptive robust fault-tolerant control scheme is claimed to solve both the problems,as it seamlessly integrates adaptive and robust control design techniques.Comparative simulation studies are performed using a nonlinear hypersonic aircraft model to show the effectiveness of the proposed scheme over a robust adaptive control based faulttolerant scheme.An adaptive robust approach for actuator fault-tolerant control of a class of uncertain nonlinear systems is proposed.The two chief ways in which the system performance can degrade following an actuator-fault are undesirable transients and unacceptably large steady-state tracking errors.Adaptive control based schemes can achieve good final tracking accuracy in spite of change in system parameters following an actuator fault,and robust control based designs can achieve guaranteed transient response.However,neither adaptive control nor robust control based fault-tolerant designs can address both the issues associated with actuator faults.In the present work,an adaptive robust fault-tolerant control scheme is claimed to solve both the problems,as it seamlessly integrates adaptive and robust control design techniques.Comparative simulation studies are performed using a nonlinear hypersonic aircraft model to show the effectiveness of the proposed scheme over a robust adaptive control based faulttolerant scheme.

关 键 词：fault-tolerant system actuator fault adaptive control robust control. 

分 类 号：TP11[自动化与计算机技术—控制理论与控制工程]