Adaptive tracking of nonlinear time-delay systems subject to symmetrical dead-zone input

This paper investigates the problem of global adaptive tracking by output feedback, for a class of uncertain nonlinear systems with symmetric dead-zone nonlinearity and unknown time-delay in the actuator. In the case that only system output can be measured, we propose a universal adaptive output fee...

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Bibliographic Details
Published inChinese Control Conference pp. 370 - 375
Main Authors Cao, Zhenxing, Jia, Xianglei, Shao, Yiming, Li, Shuo
Format Conference Proceeding
LanguageEnglish
Published Technical Committee on Control Theory, Chinese Association of Automation 01.07.2020
Subjects
Actuators
Adaptive systems
Adaptive Tracking
Backstepping
Closed loop systems
Dead-Zone
Nonlinear systems
Nonlinear Time-Delay Systems
Observers
Output feedback
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Summary:This paper investigates the problem of global adaptive tracking by output feedback, for a class of uncertain nonlinear systems with symmetric dead-zone nonlinearity and unknown time-delay in the actuator. In the case that only system output can be measured, we propose a universal adaptive output feedback controller by designing the extended high-gain observer with an adjustable parameter. Then, the stability analysis is performed concisely by using the idea of non-separation principle and high-gain scaling approach instead of backstepping method. In particular, all design parameters are easy to obtain by solving a system of inequalities. Finally, a simulation example is given to illustrate the effectiveness of the proposed controller.
ISSN:1934-1768
DOI:10.23919/CCC50068.2020.9188532