NDLI: Dominant pole placement for multi-loop control systems

Content Provider	IEEE Xplore Digital Library
Author	Yu Zhang Ing-Guo Wang Astrom, K.J.
Copyright Year	2000
Description	Author affiliation: Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore (Yu Zhang)
Abstract	This paper proposes a method for multiloop PI controller design which can achieve dominant pole placement for TITO (two input two output) processes. It is an extension of the original dominant pole design for SISO systems. Unlike its SISO counterpart, where the controller parameters can be obtained analytically, the multiloop version amounts to solving some nonlinear equation with complex coefficients, for which closed-form formulae are not possible. This is not surprising as the coupling between loops makes the closed-loop characteristic equation depend on both unknown controllers in a nonlinear way, and hence difficult to solve analytically. A novel approach is developed to solve the equation using a "generalized root locus" method, in which the solution to our pole placement problem is found from a suitable intersection point between the "root locus" and the positive real axis. The design procedure is given and simulation examples are provided to show the effectiveness of the proposed method and comparisons are made with the BLT method.
Starting Page	1965
Ending Page	1969
File Size	439721
Page Count	5
File Format	PDF
ISBN	0780355199
ISSN	07431619
DOI	10.1109/ACC.2000.879545
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-06-28
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	State feedback Control systems Nonlinear equations Pi control Design methodology Proportional control Automatic control Electrical equipment industry Industrial control Process control
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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