Adaptive Robust Control for Uncertain Nonlinear Systems with Time-Delay

2012 ◽  
pp. 135-140
Author(s):  
Shengli Shi ◽  
Long Yu
Keyword(s):  
Time Delay ◽  
Robust Control ◽  
Nonlinear Systems ◽  
Adaptive Robust Control ◽  
Uncertain Nonlinear Systems

Adaptive Robust Control of a Class of Uncertain Nonlinear Systems Based on Backstepping

2013 ◽  
Vol 389 ◽  
pp. 441-447
Author(s):  
Hai Bo Zhao ◽  
Yun Guo Zhu
Keyword(s):  
Robust Control ◽  
Nonlinear Systems ◽  
Adaptive Controller ◽  
Adaptive Robust Control ◽  
Uncertain Nonlinear Systems ◽  
Globally Asymptotically Stable ◽  
Adaptive Law ◽  
Bounded Disturbances ◽  
Bounded Disturbance ◽  
Control Quantity

Aiming at the control of a class of bounded disturbance uncertain nonlinear systems,we applied robust control and backstepping control,introduced the concept of virtual control quantity,chose Lyapunov function through stepwise recursion,offered the adaptive law of parameters estimate,designed an adaptive controller with state feedback in the premise of unknown uncertain parameters in the systems, and analyzed its stability. Compared with the conventional PID control in simulation results, the designed controller has the better robustness of the system parameter uncertainty and bounded disturbances, and can ensure the entire closed-loop system is globally asymptotically stable, thus verifying the effectiveness of the proposed control strategy.

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