Transfer Function Parameter Identification by Modified Relay Feedback

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Sammanfattning

This paper proposes a transfer function parameter identification method, applicable to SISO systems of any order. Parameter identification is posed as a (non-convex) squared output error minimization problem, numerically solved utilizing Newton-Raphson iteration with back tracking line search. Focus lies on computing the cost function gradient and Hessian with respect to the parameter vector and on finding a feasible start point. The method is demonstrated for FOTD model identification. A modified relay non-linearity is utilized in order to obtain most input signal energy at a predefined phase, without a priori system information. The identification method is evaluated on a batch of common process industry processes. Finally, conclusions and suggestions on future work are provided.
Originalspråkengelska
Titel på värdpublikation2010 American Control Conference
Sidor2164-2169
DOI
StatusPublished - 2010
EvenemangAmerican Control Conference, 2010 - Baltimore, MD, Baltimore, MD, USA
Varaktighet: 2010 juni 302010 juli 2

Publikationsserier

Namn
ISSN (tryckt)0743-1619

Konferens

KonferensAmerican Control Conference, 2010
Land/TerritoriumUSA
OrtBaltimore, MD
Period2010/06/302010/07/02

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