Two-degree-of-freedom H/sub infinity /-optimization of multivariable feedback systems

1991 ◽  
Vol 36 (11) ◽  
pp. 1272-1276 ◽  
Author(s):  
I. Yaesh ◽  
U. Shaked
Keyword(s):  
Degree Of Freedom ◽  
Feedback Systems ◽  
Multivariable Feedback ◽  
Two Degree Of Freedom

Robust Decoupled System Design of Uncertain Multivariable Feedback Systems

1999 ◽  
Vol 121 (4) ◽  
pp. 703-708
Author(s):  
Chih-Min Lin ◽  
Chen-Ling Ying
Keyword(s):  
Flight Control ◽  
Design Method ◽  
Degree Of Freedom ◽  
System Structure ◽  
Phase System ◽  
Model Matching ◽  
Feedback Systems ◽  
Design Algorithm ◽  
Multivariable Feedback ◽  
Two Degree Of Freedom

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.

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