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TECHNICAL PAPERS

Robust Nondiagonal Controller Design for Uncertain Multivariable Regulating Systems

[+] Author and Article Information
M. A. Franchek, P. Herman

Ray Herrick Laboratory, School of Mechanical Engineering, Purdue University, West Lafayette, IN 47907-1288

O. D. I. Nwokah

Southern Methodist University, Department of Mechanical Engineering, Dallas, TX

J. Dyn. Sys., Meas., Control 119(1), 80-85 (Mar 01, 1997) (6 pages) doi:10.1115/1.2801220 History: Received February 14, 1996; Online December 03, 2007

Abstract

Presented in this paper is a robust controller design methodology for a class of uncertain, multivariable, regulating systems required to maintain a prespecified operating condition within hard time domain tolerances despite a vector of step disturbances. The design methodology is a frequency domain approach and is based on sequential loop design where a Gauss elimination technique facilitates the various design steps. The specific class of systems addressed are those which can be modeled as square, multivariable systems with parametric uncertainty. One restriction imposed is that the system and its inverse are stable for all plant parameter combinations. The key features of this design methodology include (i) the design of a fully populated controller matrix, (ii) the ability to design for system integrity, and (iii) the direct enforcement of hard time domain tolerances through frequency domain amplitude inequalities.

Copyright © 1997 by The American Society of Mechanical Engineers
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