Adaptive asymptotic fault-tolerant tracking of uncertain nonlinear systems with unknown control directions  

作　　者：Jin-Zi Yang Yuan-Xin Li Shaocheng Tong 

机构地区：[1]Department of Science,Liaoning University of Technology,Jinzhou,Liaoning,People’s Republic of China

出　　处：《Journal of Control and Decision》2022年第3期301-310,共10页控制与决策学报（英文）

基　　金：the Funds ofNational Science of China(Grant Nos.61973146,61773188,62173172);the Distinguished Young Scientific Research Talents Plan in Liaoning Province(Nos.XLYC1907077,JQL201915402).

摘　　要：In the article,the issues of asymptotic adaptive tracking control for the uncertain nonlinear systems in the presence of actuator faults and unknown control directions are investigated.By using the properties of the Nussbaum function and backstepping technique,the problems resulting from the unknown signs of the nonlinear control functions are circumvented successfully.Moreover,a new adaptive asymptotic tracking control method is presented with the fault-tolerant control framework,which is capable of realising zero-tracking performance.The stability of the controlled system is ensured through fractional Lyapunov stability analysis.Finally,the validity of the raised scheme is verified by a simulation example.

关 键 词：Uncertain nonlinear system fault-tolerant control(FTC) adaptive asymptotic tracking control unknown control directions 

分 类 号：O17[理学—数学]