Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics

In the present work the application of a new approach is demonstrated to a discrete-time state feedback regulator synthesis with feedback linearization and pole-placement for non-linear discrete-time systems. Under the simultaneous implementation of a non-linear coordinate transformation and a non-l...

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Main Author: Dubljević Stevan
Format: Article
Language:English
Published: Association of Chemical Engineers of Serbia 2003-01-01
Series:Hemijska Industrija
Subjects:
Online Access:http://www.doiserbia.nb.rs/img/doi/0367-598X/2003/0367-598X0303120D.pdf
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author Dubljević Stevan
author_facet Dubljević Stevan
author_sort Dubljević Stevan
collection DOAJ
description In the present work the application of a new approach is demonstrated to a discrete-time state feedback regulator synthesis with feedback linearization and pole-placement for non-linear discrete-time systems. Under the simultaneous implementation of a non-linear coordinate transformation and a non-linear state feedback law computed through the solution of a system of non-linear functional equations, both the feedback linearization and pole-placement design objectives were accomplished. The non-linear state feedback regulator synthesis method was applied to a continuous stirred tank reactor (CSTR) under non-isothermal operating conditions that exhibits steady-state multiplicity. The control objective was to regulate the reactor at the middle unstable steady state by manipulating the rate of input heat in the reactor. Simulation studies were performed to evaluate the performance of the proposed non-linear state feedback regulator, as it was shown a non-linear state feedback regulator clearly outperformed a standard linear one, especially in the presence of adverse disturbance under which linear regulation at the unstable steady state was not feasible.
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spelling doaj.art-3ea2633149e34079b959cfcae000630b2022-12-21T22:10:06ZengAssociation of Chemical Engineers of SerbiaHemijska Industrija0367-598X2003-01-0157312012510.2298/HEMIND0303120DApplication of non-linear discretetime feedback regulators with assignable closed-loop dynamicsDubljević StevanIn the present work the application of a new approach is demonstrated to a discrete-time state feedback regulator synthesis with feedback linearization and pole-placement for non-linear discrete-time systems. Under the simultaneous implementation of a non-linear coordinate transformation and a non-linear state feedback law computed through the solution of a system of non-linear functional equations, both the feedback linearization and pole-placement design objectives were accomplished. The non-linear state feedback regulator synthesis method was applied to a continuous stirred tank reactor (CSTR) under non-isothermal operating conditions that exhibits steady-state multiplicity. The control objective was to regulate the reactor at the middle unstable steady state by manipulating the rate of input heat in the reactor. Simulation studies were performed to evaluate the performance of the proposed non-linear state feedback regulator, as it was shown a non-linear state feedback regulator clearly outperformed a standard linear one, especially in the presence of adverse disturbance under which linear regulation at the unstable steady state was not feasible.http://www.doiserbia.nb.rs/img/doi/0367-598X/2003/0367-598X0303120D.pdfNon-linear SystemsDiscrete-time systemsFeedback linearizationPole-placement
spellingShingle Dubljević Stevan
Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics
Hemijska Industrija
Non-linear Systems
Discrete-time systems
Feedback linearization
Pole-placement
title Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics
title_full Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics
title_fullStr Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics
title_full_unstemmed Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics
title_short Application of non-linear discretetime feedback regulators with assignable closed-loop dynamics
title_sort application of non linear discretetime feedback regulators with assignable closed loop dynamics
topic Non-linear Systems
Discrete-time systems
Feedback linearization
Pole-placement
url http://www.doiserbia.nb.rs/img/doi/0367-598X/2003/0367-598X0303120D.pdf
work_keys_str_mv AT dubljevicstevan applicationofnonlineardiscretetimefeedbackregulatorswithassignableclosedloopdynamics