NDLI: Event-triggered robust adaptive control for discrete time uncertain systems with unmodelled dynamics and disturbances

Content Provider	IET Digital Library
Author	Zhuang, Wenxiu Wen, Changyun Zhou, Jing Liu, Zhitao Su, Hongye
Abstract	In practice, modelling errors caused by high-order unmodelled dynamics and external disturbances are unavoidable. How to ensure the robustness of an adaptive controller with respect to such modelling errors is always a critical concern. In this study, the authors consider the design of event-triggered robust adaptive control for a class of discrete-time uncertain systems which involve such modelling errors and also are allowed to be non-minimum phase. Unlike some existing event-triggered control schemes, the developed controllers do not require that the measurement errors meet the corresponding input-to-state stable condition. Global stability of the closed-loop system which means that all the signals are bounded is established in the presence of unmodelled dynamics and disturbances. Besides, in contrast to existing robust adaptive schemes, the designed adaptive controller does not involve parameters related to unmodelled dynamics and disturbances which are difficult to be chosen for ensuring such stability. An example is given to verify the effectiveness of the proposed control strategy.
Starting Page	3124
Ending Page	3131
Page Count	8
ISSN	17518644
Volume Number	13
e-ISSN	17518652
Issue Number	Issue 18, Dec (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/13/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2019.0308
Journal	IET Control Theory & Applications
Publisher Date	2019-09-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Control Closed Loop System Control Strategy Control System Analysis Control System Synthesis Designed Adaptive Controller Developed Controller Discrete Control System Discrete Time System Discrete Time Uncertain System Discrete-time Uncertain System Event-triggered Robust Adaptive Control Existing Event-triggered Control Scheme External Disturbances High-order Unmodelled Dynamics Measurement Error Modelling Error Nonlinear Control System Robust Adaptive Scheme Robust Control Self Adjusting Control System Stability Stability in Control Theory 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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