UDE-based dynamic surface control for strict-feedback systems with mismatched disturbances

2016 ◽  
Author(s):  
Jiguo Dai ◽  
Beibei Ren ◽  
Qing-Chang Zhong
Keyword(s):  
Dynamic Surface Control ◽  
Feedback Systems ◽  
Dynamic Surface ◽  
Surface Control ◽  
Mismatched Disturbances ◽  
Strict Feedback

scholarly journals Resilient Anti-disturbance  Dynamic Surface Control of Uncertain Strict-feedback Systems Subject to Partial Loss of Actuator Effectiveness

2021 ◽  
Author(s):  
Lu Liu ◽  
Anxin Yang ◽  
Weixing Chen ◽  
Weidong Zhang
Keyword(s):  
Control Method ◽  
Dynamic Surface Control ◽  
Feedback Systems ◽  
Partial Loss ◽  
Dynamic Surface ◽  
Surface Control ◽  
State Observers ◽  
Uncertain Model ◽  
Loss Of Actuator Effectiveness ◽  
Strict Feedback

Abstract This paper is concerned with the tracking control of a class of uncertain strict-feedback systems subject to partial loss of actuator effectiveness, in addition to uncertain model dynamics and unknown disturbances. A resilient anti-disturbance dynamic surface control method is proposed to achieve stable tracking regardless of partial actuator faults. First, data-driven adaptive extended state observers are designed based on memory-based identifiers, such that the uncertain model dynamics, external disturbances, and the unknown input gains due to actuator faults can be estimated. Next, a resilient anti-disturbance dynamic surface controller is developed based on recovered information from the data-driven adaptive extended state observers. After that, it is proven that the cascade system formed by the observer and controller is input-to-state stable. Finally, comparative studies are performed to validate the efficacy of the resilient anti-disturbance dynamic surface control method for nonlinear strict-feedback systems subject to partial loss of actuator effectiveness.

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