Title :
Sensitivity of principal phases
Author_Institution :
University of Oxford, Department of Engineering Science, Oxford, UK
Abstract :
It is shown that the principal phases of a square nonsingular transfer-function matrix are insensitive to small additive perturbations. This is an important result for the frequency-response analysis and design of multivariable control systems.
Keywords :
control system analysis; control system synthesis; frequency response; matrix algebra; multivariable control systems; perturbation techniques; sensitivity analysis; transfer functions; additive perturbations; frequency-response analysis; multivariable control systems; principal phases; sensitivity; square nonsingular transfer-function matrix;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19820510
