Output feedback stabilization via reduced-order observer for uncertain switched nonlinear systems

2017 ◽  
Author(s):  
Zhanjie Li ◽  
Jun Zhao
Keyword(s):  
Nonlinear Systems ◽  
Output Feedback ◽  
Feedback Stabilization ◽  
Switched Nonlinear Systems ◽  
Reduced Order ◽  
Output Feedback Stabilization ◽  
Reduced Order Observer

scholarly journals Adaptive Output Feedback Stabilization of Random Nonlinear Systems with Unmodeled Dynamics Driven by Colored Noise

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Mingyue Cui
Keyword(s):  
Nonlinear Systems ◽  
Output Feedback ◽  
Colored Noise ◽  
Stability Margin ◽  
Feedback Stabilization ◽  
Unmodeled Dynamics ◽  
Tuning Parameters ◽  
Output Feedback Stabilization ◽  
Control Scheme ◽  
Reduced Order Observer

This paper focuses on the problem of adaptive output feedback stabilization for random nonlinear systems with unmodeled dynamics and uncertain nonlinear functions driven by colored noise. Under the assumption of unmodeled dynamics having enough stability margin, an adaptive output feedback stabilization controller is designed based on a reduced-order observer such that the state of the closed-loop system has an asymptotic gain in the 2-th moment (AG-2-M) and the mean square of the output can be made arbitrarily small by tuning parameters. A simulation example is used to illustrate the effectiveness of the control scheme.

scholarly journals Global Output Feedback Stabilization of Nonlinear Systems with a Time-Varying Power and Unknown Output Function

2018 ◽  
Vol 2018 ◽  
pp. 1-12
Author(s):  
Chao Guo ◽  
Kemei Zhang
Keyword(s):  
Nonlinear Systems ◽  
Output Feedback ◽  
Feedback Stabilization ◽  
Time Varying ◽  
Output Function ◽  
Adding A Power Integrator ◽  
Output Feedback Stabilization ◽  
Open Sector ◽  
Continuous Output ◽  
Reduced Order Observer

This paper studies the problem of global output feedback stabilization for a class of nonlinear systems with a time-varying power and unknown output function. For nonlinear systems with a time-varying power and unknown continuous output function, by constructing a new nonlinear reduced-order observer together with adding a power integrator method, a new function to determine the maximal open sector Ω of output function is given. As long as output function belongs to any closed sector included in Ω, it is shown that the equilibrium point of the closed-loop system can be guaranteed globally uniformly asymptotically stable by an output feedback controller.

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