Static anti-windup compensator design for locally Lipschitz systems under input and output delays

This paper proposes a static anti-windup compensator (AWC) design methodology for the locally Lipschitz nonlinear systems, containing time-varying interval delays in input and output of the system in the presence of actuator saturation. Static AWC design is proposed for the systems by considering a...

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Main Authors: Muhammad Jazib Hameed, Muhammad Rehan, Muhammad Iqbal, Muntazir Hussain, Najam us Saqib, Jamshed Iqbal
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2023-01-01
Series:PLoS ONE
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10089364/?tool=EBI
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author Muhammad Jazib Hameed
Muhammad Rehan
Muhammad Iqbal
Muntazir Hussain
Najam us Saqib
Jamshed Iqbal
author_facet Muhammad Jazib Hameed
Muhammad Rehan
Muhammad Iqbal
Muntazir Hussain
Najam us Saqib
Jamshed Iqbal
author_sort Muhammad Jazib Hameed
collection DOAJ
description This paper proposes a static anti-windup compensator (AWC) design methodology for the locally Lipschitz nonlinear systems, containing time-varying interval delays in input and output of the system in the presence of actuator saturation. Static AWC design is proposed for the systems by considering a delay-range-dependent methodology to consider less conservative delay bounds. The approach has been developed by utilizing an improved Lyapunov-Krasovskii functional, locally Lipschitz nonlinearity property, delay-interval, delay derivative upper bound, local sector condition, L2 gain reduction from exogenous input to exogenous output, improved Wirtinger inequality, additive time-varying delays, and convex optimization algorithms to obtain convex conditions for AWC gain calculations. In contrast to the existing results, the present work considers both input and output delays for the AWC design (along with their combined additive effect) and deals with a more generic locally Lipschitz class of nonlinear systems. The effectiveness of the proposed methodology is demonstrated via simulations for a nonlinear DC servo motor system, possessing multiple time-delays, dynamic nonlinearity and actuator constraints.
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spelling doaj.art-3e0e1262e78b4d2bb757ce939b29bc412023-04-14T05:31:38ZengPublic Library of Science (PLoS)PLoS ONE1932-62032023-01-01184Static anti-windup compensator design for locally Lipschitz systems under input and output delaysMuhammad Jazib HameedMuhammad RehanMuhammad IqbalMuntazir HussainNajam us SaqibJamshed IqbalThis paper proposes a static anti-windup compensator (AWC) design methodology for the locally Lipschitz nonlinear systems, containing time-varying interval delays in input and output of the system in the presence of actuator saturation. Static AWC design is proposed for the systems by considering a delay-range-dependent methodology to consider less conservative delay bounds. The approach has been developed by utilizing an improved Lyapunov-Krasovskii functional, locally Lipschitz nonlinearity property, delay-interval, delay derivative upper bound, local sector condition, L2 gain reduction from exogenous input to exogenous output, improved Wirtinger inequality, additive time-varying delays, and convex optimization algorithms to obtain convex conditions for AWC gain calculations. In contrast to the existing results, the present work considers both input and output delays for the AWC design (along with their combined additive effect) and deals with a more generic locally Lipschitz class of nonlinear systems. The effectiveness of the proposed methodology is demonstrated via simulations for a nonlinear DC servo motor system, possessing multiple time-delays, dynamic nonlinearity and actuator constraints.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10089364/?tool=EBI
spellingShingle Muhammad Jazib Hameed
Muhammad Rehan
Muhammad Iqbal
Muntazir Hussain
Najam us Saqib
Jamshed Iqbal
Static anti-windup compensator design for locally Lipschitz systems under input and output delays
PLoS ONE
title Static anti-windup compensator design for locally Lipschitz systems under input and output delays
title_full Static anti-windup compensator design for locally Lipschitz systems under input and output delays
title_fullStr Static anti-windup compensator design for locally Lipschitz systems under input and output delays
title_full_unstemmed Static anti-windup compensator design for locally Lipschitz systems under input and output delays
title_short Static anti-windup compensator design for locally Lipschitz systems under input and output delays
title_sort static anti windup compensator design for locally lipschitz systems under input and output delays
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10089364/?tool=EBI
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