Decentralized control for processes with input and output nonlinearities

Su, SW; Bao, J; Lee, P

Decentralized control for processes with input and output nonlinearities

Su, SW

Bao, J Lee, P

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Publisher:: Chemeca 2004 Conference
Publication Type:: Conference Proceeding
Citation:: Proceedings of Chemeca 2004 Conference: 32nd Australasian Chemical Engineering Conference, 2004, pp. 1 - 6
Issue Date:: 2004-01

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Field	Value	Language
dc.contributor.author	Su, SW https://orcid.org/0000-0002-5720-8852	en_US
dc.contributor.author	Bao, J	en_US
dc.contributor.author	Lee, P	en_US
dc.contributor.editor	Conference, C	en_US
dc.date	2004-09-26	en_US
dc.date.issued	2004-01	en_US
dc.identifier.citation	Proceedings of Chemeca 2004 Conference: 32nd Australasian Chemical Engineering Conference, 2004, pp. 1 - 6	en_US
dc.identifier.isbn	1 877040126	en_US
dc.identifier.uri	http://hdl.handle.net/10453/11976
dc.description.abstract	Decentralized control is the most widely used control strategy in the process industry because of its simplicity in controller design and implementation and its potential to achieve failure tolerant control. Actuator/sensor nonlinearities are often encountered in many chemical processes. This paper presents a new decentralized control method for processes which have static actuator/sensor nonlinearities, such as saturation, hysteresis and dead zone. The proposed decentralized integral controller is designed based on feedforward passivation, which can be applied to nonminimum phase processes and/or processes of high relative degree. The concept of marginally stable positive real systems is used to analyse the stability of a closed-loop system. The feedforward system is constructed to attain dynamic performance on the basis of frequency based passivity analysis. The proposed approach is used in the control of a quadruple tank process which has static nonlinearity in its actuators.	en_US
dc.publisher	Chemeca 2004 Conference	en_US
dc.relation.ispartof	Proceedings of Chemeca 2004 Conference: 32nd Australasian Chemical Engineering Conference	en_US
dc.relation.ispartof	Chemeca: Australasian Conference on Chemical Engineering	en_US
dc.title	Decentralized control for processes with input and output nonlinearities	en_US
dc.type	Conference Proceeding
utslib.location	Sydney, Australia	en_US
utslib.location.activity	Sydney, Australia	en_US
utslib.for	0914 Resources Engineering and Extractive Metallurgy	en_US
dc.location.activity	Sydney, Australia	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Biomedical Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CHT - Health Technologies
utslib.copyright.status	closed_access
pubs.consider-herdc	false	en_US
pubs.place-of-publication	Sydney, Australia	en_US
pubs.start-date	2004-09-26	en_US

Abstract:

Decentralized control is the most widely used control strategy in the process industry because of its simplicity in controller design and implementation and its potential to achieve failure tolerant control. Actuator/sensor nonlinearities are often encountered in many chemical processes. This paper presents a new decentralized control method for processes which have static actuator/sensor nonlinearities, such as saturation, hysteresis and dead zone. The proposed decentralized integral controller is designed based on feedforward passivation, which can be applied to nonminimum phase processes and/or processes of high relative degree. The concept of marginally stable positive real systems is used to analyse the stability of a closed-loop system. The feedforward system is constructed to attain dynamic performance on the basis of frequency based passivity analysis. The proposed approach is used in the control of a quadruple tank process which has static nonlinearity in its actuators.

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http://hdl.handle.net/10453/11976