Development and application of a model-plant mismatch expression for linear time-invariant systems

dc.contributor.authorOlivier, Laurentz Eugene
dc.contributor.authorCraig, Ian Keith
dc.contributor.emailian.craig@up.ac.zaen_ZA
dc.date.accessioned2015-09-02T05:24:48Z
dc.date.available2015-09-02T05:24:48Z
dc.date.issued2015-08
dc.description.abstractWhen a plant and its controller are sufficiently linear and time-invariant so that they can be representedby transfer functions, and this plant is under classical control (meaning the controller can also be repre-sented by a transfer function), the model-plant mismatch (MPM) that often plagues industrial processescan be written as a closed-form expression. This includes a variety of controllers, among which the ubiq-uitous Proportional, Integral and Derivative (PID) controller. The MPM expression can then be used toidentify a representative transfer function of the “true plant” from the currently available plant model.The MPM expression works for single-input single-output as well as multiple-input multiple-output sys-tems. The closed-loop data required for application of the expression has to be sufficiently exciting. Ifsignificant disturbances perturb the plant their values need to be available. In this article the expressionis applied to industrial data to show its applicability.en_ZA
dc.description.embargo2016-08-31en_ZA
dc.description.librarianhb2015en_ZA
dc.description.urihttp://www.elsevier.com/locate/jproconten_ZA
dc.identifier.citationOlivier, LE & Craig, IK 2015, 'Development and application of a model-plant mismatch expression for linear time-invariant systems', Journal of Process Control, vol. 32, pp. 77-86.en_ZA
dc.identifier.issn0959-1524 (print)
dc.identifier.issn1873-2771 (online)
dc.identifier.other10.1016/j.jprocont.2015.04.016
dc.identifier.urihttp://hdl.handle.net/2263/49687
dc.language.isoenen_ZA
dc.publisherElsevieren_ZA
dc.rights© 2015 Elsevier Ltd. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Journal of Process Control. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Process Control, vol. 32, pp. 77-86, 2015. doi :10.1016/j.jprocont.2015.04.016.en_ZA
dc.subjectMismatchen_ZA
dc.subjectModel-based controlen_ZA
dc.subjectPID controlen_ZA
dc.subjectTransfer functionen_ZA
dc.subjectProportional, integral and derivative (PID)en_ZA
dc.subjectModel-plant mismatch (MPM)en_ZA
dc.titleDevelopment and application of a model-plant mismatch expression for linear time-invariant systemsen_ZA
dc.typePostprint Articleen_ZA

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