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Adaptive Decoupling of Multivariable Systems

Wittenmark, Björn LU ; Middleton, Richard H and Goodwin, Graham C (1987) In International Journal of Control 46(6). p.1992-2009
Abstract
For many industrial processes, it is of interest to design a decoupling precompensator. The precompensator makes it possible to design controllers based on single-input-single-output models of the process. A model of the process must be known to design the precompensator. This paper shows how the precompensator can be designed adaptively using input-output measurements. The precompensator is first designed for the case when the process is known. The adaptive precompensator is then constructed using the certainty equivalence principle. The convergence properties and the implementation of the adaptive decoupler are discussed. It is shown that the adaptive scheme will converge provided the system is persistently excited and that a suitable... (More)
For many industrial processes, it is of interest to design a decoupling precompensator. The precompensator makes it possible to design controllers based on single-input-single-output models of the process. A model of the process must be known to design the precompensator. This paper shows how the precompensator can be designed adaptively using input-output measurements. The precompensator is first designed for the case when the process is known. The adaptive precompensator is then constructed using the certainty equivalence principle. The convergence properties and the implementation of the adaptive decoupler are discussed. It is shown that the adaptive scheme will converge provided the system is persistently excited and that a suitable model structure is used in the estimation. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Journal of Control
volume
46
issue
6
pages
1992 - 2009
publisher
Taylor & Francis
external identifiers
  • Scopus:0023561009
ISSN
0020-7179
DOI
10.1080/00207178708934029
language
English
LU publication?
yes
id
864e3774-05d8-4d9c-a210-8a9870593554 (old id 4813375)
date added to LUP
2014-11-29 21:05:56
date last changed
2016-10-23 04:38:07
@misc{864e3774-05d8-4d9c-a210-8a9870593554,
  abstract     = {For many industrial processes, it is of interest to design a decoupling precompensator. The precompensator makes it possible to design controllers based on single-input-single-output models of the process. A model of the process must be known to design the precompensator. This paper shows how the precompensator can be designed adaptively using input-output measurements. The precompensator is first designed for the case when the process is known. The adaptive precompensator is then constructed using the certainty equivalence principle. The convergence properties and the implementation of the adaptive decoupler are discussed. It is shown that the adaptive scheme will converge provided the system is persistently excited and that a suitable model structure is used in the estimation.},
  author       = {Wittenmark, Björn and Middleton, Richard H and Goodwin, Graham C},
  issn         = {0020-7179},
  language     = {eng},
  number       = {6},
  pages        = {1992--2009},
  publisher    = {ARRAY(0x85e98e0)},
  series       = {International Journal of Control},
  title        = {Adaptive Decoupling of Multivariable Systems},
  url          = {http://dx.doi.org/10.1080/00207178708934029},
  volume       = {46},
  year         = {1987},
}