Robust Finite-Time Output Feedback Control for Systems With Unpredictable Time-Varying Disturbances

This work presents a robust finite-time output feedback control method for a number of nonlinear systems that suffer unpredictable time-varying disturbances. The developed method takes advantage of control techniques based on a finite-time state observer used to estimate the lumped disturbance, wher...

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Bibliographic Details
Main Authors: Huiming Wang, Qiyao Zhang, Juan Xian, I-Ming Chen
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9036946/
Description
Summary:This work presents a robust finite-time output feedback control method for a number of nonlinear systems that suffer unpredictable time-varying disturbances. The developed method takes advantage of control techniques based on a finite-time state observer used to estimate the lumped disturbance, where the estimator plays an important role in online compensation after being transmitted to a corresponding controller. Besides, with the state estimation provided by the finite-time state observer, the finite-time output feedback controller can guarantee the finite-time stability of the closed-loop system. The experimental results validate the effectiveness of the developed method on the trajectory tracking control of a robot manipulator.
ISSN:2169-3536