Publication detail

Decentralized Control with Process Frequency Response Identification

Authors: Macháček Jiří

Year: 2003

Type of publication: článek ve sborníku

Name of source: Proceedings of the IASTED International Conference on Intelligent Systems and Control

Publisher name: ACTA Press

Place: Anaheim, Calgary, Zurich

Page from-to: 449-454

Titles:

Language	Name	Abstract	Keywords
cze			Multivariable system, decentralized control, relay autotuning, identification, PID controller
eng	Decentralized Control with Process Frequency Response Identification	Design of decentralized controllers is based on knowledge of process model. When model of the process is not a priori known, basic information about system can be obtained by relay autotuner. Controllers tuning is realized in a few iterations with repeated relay test, e.g. by sequential method. This approach may be improved, when an approximation system model is derived. This paper deals with process frequency response identification from relay test by FFT and with calculation controllers parameters directly from these responses. This approach eliminates errors arising from building of a parametric model in form of transfer function with unknown structure. Time of experimental work on real process is saved, as great part of experiment is simulated on computer. The procedure is demonstrated on simulation example for a system with two inputs and two outputs. Only two experiments are required for controllers tuning.	Multivariable system, decentralized control, relay autotuning, identification, PID controller

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