Global exponential stabilisation of nonlinear systems by reduced-order observer-based output feedback control via matrix inequality approach

2021 ◽  
pp. 1-14
Author(s):  
Sang-Young Oh ◽  
Ho-Lim Choi
Keyword(s):  
Feedback Control ◽  
Nonlinear Systems ◽  
Output Feedback ◽  
Output Feedback Control ◽  
Matrix Inequality ◽  
Reduced Order ◽  
Reduced Order Observer

scholarly journals Output feedback control of nonlinear systems with uncertain ISS/iISS supply rates and noises

2014 ◽  
Vol 19 (2) ◽  
pp. 286-299 ◽  
Author(s):  
Xin Yu ◽  
Guohai Liu
Keyword(s):  
Feedback Control ◽  
Nonlinear Systems ◽  
Output Feedback ◽  
Closed Loop ◽  
Inverse Dynamics ◽  
Output Feedback Control ◽  
Reduced Order ◽  
Output Feedback Controller ◽  
Control Scheme ◽  
Reduced Order Observer

This paper considers the problem of global output feedback control for a class of nonlinear systems with inverse dynamics. The main contribution of paper is that: For the inverse dynamics with uncertain ISS/iISS supply rates, and the systems being disturbed by L2 noises, we construct a reduced-order observer-based output feedback controller, which drives the output of system to zero and maintain other closed-loop signals bounded. Finally, a simulation example shows the effectiveness of the control scheme.

Output Feedback Regulation Control for a Class of Uncertain Nonlinear Systems

2015 ◽  
Vol 137 (4) ◽  
Author(s):  
Jiangbo Yu ◽  
Jizhong Wang ◽  
Changxue Zhang ◽  
Yuqiang Wu
Keyword(s):  
Nonlinear Systems ◽  
Output Feedback ◽  
Output Feedback Control ◽  
Feedback Regulation ◽  
Reduced Order ◽  
Closed Loop Systems ◽  
Dynamic Uncertainty ◽  
Control Schemes ◽  
Reduced Order Observer ◽  
Feedback Control Strategy

This paper investigates the global regulation problem for a class of nonlinear systems with integral input-to-state stable (iISS) dynamic uncertainty. By designing a reduced-order observer, a systematic output feedback control strategy is proposed. The designed dynamic controller can achieve the global set-point regulation control and guarantee all signals of the closed-loop systems bounded. The developed control schemes find its application in the pendulum control system. Simulation results verify its effectiveness.

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