Title :
Observability of decoupled time-varying multivariable systems
Author_Institution :
Deutsche Forschungs- und Versuchsanstalt fÿr Luft- und Raumfahrt e.V., Institut fÿr Dynamik der Flugsysteme, Oberpfaffenhofen, West Germany
Abstract :
The decoupling of a time-varying multivariable system by state-variable feedback does not guarantee the observability of the decoupled system. In the letter, a necessary and sufficient condition is derived for the observability of these systems in the time-variable case.
Keywords :
multivariable control systems; time-varying systems;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19700016
