Output Feedback Stabilization for a Class of Uncertain High-Order Nonlinear Systems

We investigate output feedback stabilization for a class of high-order nonlinear systems whose output function and nonlinear terms are unknown. First, a smooth state feedback control law is designed by adding a power integrator technique. Next, we design a high-order observer to estimate the unmeasu...

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Bibliographic Details
Published in:IEEE access 2022, Vol.10, p.4297-4306
Main Authors: Wang, Dingchao, Lin, Cong, Cai, Xiushan
Format: Article
Language:English
Subjects:
Compensators
dynamic output compensator
Feedback control
high-order nonlinear systems
Nonlinear dynamical systems
Nonlinear systems
observer design
Observers
Output feedback
Output feedback stabilization
Sensors
Stabilization
State feedback
Trajectory
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Summary:We investigate output feedback stabilization for a class of high-order nonlinear systems whose output function and nonlinear terms are unknown. First, a smooth state feedback control law is designed by adding a power integrator technique. Next, we design a high-order observer to estimate the unmeasurable state, and allocate gains of the observer one by one in an iterative way. Finally, a dynamic output compensator is achieved such that the closed-loop system converges to the equilibrium point quick. Two examples are provided to demonstrate the effectiveness of the proposed method.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2022.3141307