NDLI: Adaptive quantised H∞ observer-based output feedback control for non-linear systems with input and output quantisation

Content Provider	IET Digital Library
Author	Guo, Xiang Gui Wang, Jian Liang Liao, Fang
Abstract	This study investigates the case of simultaneous input and output quantisation for a class of non-linear output feedback systems subject to uncertain non-linear dynamics and non-zero initial states. An adaptive quantised observer-based output feedback controller is designed to guarantee bounded stability and H∞ performance despite input and output quantisation. In comparison with the existing work, the main contributions of this study are that: (i) an important lemma is proposed to remove the matrix equality constraint used in many existing results, and three new design methods in strict terms of linear matrix inequality techniques are proposed; (ii) this study focuses on eliminating the impact of both input and output quantisation errors. Since the impact of input and output quantisation errors cannot be fully eliminated, the estimation error is proved to be ultimately bounded and to converge to a residual set; and (iii) an adaptive compensation term is constructed to compensate for the time-variant effects caused by non-linear dynamics and uncertain parameter vectors. Finally, two numerical examples are given to show the efficacy and advantages of the proposed methods.
Starting Page	263
Ending Page	272
Page Count	10
ISSN	17518644
Volume Number	11
e-ISSN	17518652
Issue Number	Issue 2, Jan (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/11/2
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2016.0988
Journal	IET Control Theory & Applications
Publisher Date	2016-10-13
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Control Adaptive Quantised H∞observer-based Output Feedback Control Algebra Control System Analysis Control System Synthesis Controller Design Feedback H∞ Control Input And Output Quantisation Linear Matrix Inequalities Linear Matrix Inequality Technique Modelling And Identification Nonlinear Control System Nonlinear Output Feedback System Observers Optimal Control Self Adjusting Control System Simulation Synthesis Method Time-variant Effect Uncertain Nonlinear Dynamics
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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