Robust Decoupled System Design of Uncertain Multivariable Feedback Systems

[+] Author and Article Information
Chih-Min Lin, Chen-Ling Ying

Department of Electrical Engineering, Yuan-Ze University, Chung-Li, Tao-Yuan 320, Taiwan, Republic of China

J. Dyn. Sys., Meas., Control 121(4), 703-708 (Dec 01, 1999) (6 pages) doi:10.1115/1.2802538 History: Received July 08, 1997; Online December 03, 2007


This paper presents a design algorithm of involving robust decoupled control of uncertain multivariable feedback systems. Two-degree-of-freedom system structure is adopted to handle the quantitative robustness and decoupled performance requirements. Quantitative feedback theory is applied for loop compensator design to achieve quantitative robustness. A decoupled model matching approach is employed for prefilter design to achieve input-output decoupling performance. Thus, the design method of two-degree-of-freedom compensators is proposed to achieve decoupled system control with quantitative robust performance. Since internal stability is satisfied, this design method performs appropriately for any stable or unstable, minimum or non-minimum phase system. The AFTI/F-16 flight control system is considered as the design example to illustrate the design algorithm.

Copyright © 1999 by The American Society of Mechanical Engineers
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