Stability and performance bounds for the linearisation-based analysis and design of multivariable nonlinear systems

1988 ◽  
Vol 135 (2) ◽  
pp. 79
Author(s):  
D. Valsamis ◽  
D.H. Owens ◽  
J.O. Gray
Keyword(s):  
Nonlinear Systems ◽  
Performance Bounds ◽  
Analysis And Design ◽  
And Performance ◽  
Multivariable Nonlinear Systems

scholarly journals Adaptive Fault Compensation and Disturbance Suppression Design for Nonlinear Systems with an Aircraft Control Application

2020 ◽  
Vol 2020 ◽  
pp. 1-16
Author(s):  
X. Yao ◽  
Y. Yang
Keyword(s):  
Nonlinear Systems ◽  
Control Strategy ◽  
Feedback Linearization ◽  
Adaptive Controller ◽  
Nonlinear Feedback ◽  
Asymptotic Tracking ◽  
And Performance ◽  
Mismatched Disturbances ◽  
Adaptive Compensation Control ◽  
Multivariable Nonlinear Systems

A comprehensive adaptive compensation control strategy based on feedback linearization design is proposed for multivariable nonlinear systems with uncertain actuator fault and unknown mismatched disturbances. Firstly, the linear dynamic system is obtained through nonlinear feedback linearization, and the dynamic model of the mismatched disturbances as well as its relevance to the nonlinear system is given. The effect of disturbances on the system output is suppressed with the basic controller of the linearized system. Then, a direct adaptive controller is developed for the multiple uncertain actuator faults. Finally, an integrated algorithm based on adaptive weighted fusion could provide an effective compensation for the effect of multiple uncertain faults and mismatched disturbances. Thus, the stability and asymptotic tracking performance of the closed-loop system are ensured. The feasibility and performance of the proposed control strategy are validated by the numerical simulation results.

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