NDLI: Robust adaptive control of non-linear time-delay systems with saturation constraints

Content Provider	IET Digital Library
Author	Pan, Huihui Sun, Weichao Gao, Huijun Kaynak, Okyay Alsaadi, Fuad E. Hayat, Tasawar
Abstract	In this study, a robust adaptive control strategy is presented for a class of uncertain time-delay non-linear systems in the presence of non-symmetric saturation constraints. On the one hand, an auxiliary system is constructed to reduce the negative effects cased by possible saturations, and the following stability proof ensures the theoretical strictness; the unknown time delays, on the other hand, are compensated by choosing appropriate Lyapunov–Krasovskii functions. Furthermore, the hyperbolic tangent functions are employed to efficiently avoid the controller singularity problem encountered in Lyapunov synthesis, and it is proved that the proposed controller design method is able to guarantee semi-global uniform ultimate boundedness of all the signals in the closed-loop system. Finally, an example simulation is conducted to verify the effectiveness of theoretic results.
Starting Page	103
Ending Page	113
Page Count	11
ISSN	17518644
Volume Number	9
e-ISSN	17518652
Issue Number	Issue 1, Jan (2015)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/9/1
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2014.0557
Journal	IET Control Theory & Applications
Publisher Date	2014-09-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Control Auxiliary System Closed Loop System Closed-loop System Control System Analysis Control System Synthesis Controller Singularity Problem Delay System Distributed Parameter Control System Hyperbolic Tangent Function Lyapunov Method Lyapunov-Krasovskii Function Nonlinear Control System Nonlinear Time-delay System Nonsymmetric Saturation Constraint Robust Adaptive Control Robust Control Self Adjusting Control System Semiglobal Uniform Ultimate Boundedness Stability in Control Theory Stability Proof Synthesis Method Uncertain System
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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