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Multivariable low order structured-controller design by frequency response approximation

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Multivariable low order structured-controller design by frequency response approximation

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Título Multivariable low order structured-controller design by frequency response approximation
Autor Trierweiler, Jorge Otávio
Muller, R.
Engell, Sebastian
Abstract The method presented here offers an effective and time saving tool for multivariable controller design. The relation between controller complexity and closed loop performance can easily be evaluated. The method consists of five steps: 1. A desired behavior of the closed loop system is specified. Considering the nonminimum phase part of the process model the closed loop attainable performance is determined. 2. The process model and the attainable performance are scaled by the RPN-scaling procedure. 3. This defines an "ideal" scaled controller, which is usually too complex to be realized. 4. The frequency response of the ideal scaled compensator is approximated by a simpler one with structure and order chosen by the user. 5. Since the approximation in frequency response is performed with the scaled system, it is necessary to return to the original system’s units.
Contido em Brazilian journal of chemical engineering. São Paulo, SP. Vol. 17, no. 04-07 (Dec. 2000), p. 793-807
Assunto Controle de processos químicos
[en] Decentralized controllers
[en] Low order controllers
[en] Model reduction
[en] Multivariable PID-controllers
[en] RPN
Origem Nacional
Tipo Artigo de periódico
URI http://hdl.handle.net/10183/75856
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