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Transfer Function Parameter Identification by Modified Relay Feedback

Soltesz, Kristian LU ; Hägglund, Tore LU and Åström, Karl Johan LU (2010) American Control Conference, 2010 In 2010 American Control Conference p.2164-2169
Abstract
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... (More)
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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
relay, identification, parametric, transfer function, state space, FOTD
in
2010 American Control Conference
pages
6 pages
conference name
American Control Conference, 2010
external identifiers
  • WOS:000287187902092
  • Scopus:77957805007
ISSN
0743-1619
ISBN
978-1-4244-7426-4
project
PICLU
language
English
LU publication?
yes
id
1fe85a7c-7574-447b-a465-6c47df8d77ff (old id 1750294)
date added to LUP
2010-12-27 14:59:24
date last changed
2017-02-01 12:49:06
@inproceedings{1fe85a7c-7574-447b-a465-6c47df8d77ff,
  abstract     = {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.},
  author       = {Soltesz, Kristian and Hägglund, Tore and Åström, Karl Johan},
  booktitle    = {2010 American Control Conference},
  isbn         = {978-1-4244-7426-4},
  issn         = {0743-1619},
  keyword      = {relay,identification,parametric,transfer function,state space,FOTD},
  language     = {eng},
  pages        = {2164--2169},
  title        = {Transfer Function Parameter Identification by Modified Relay Feedback},
  year         = {2010},
}