A GENERAL APPROACH TO THE CHARACTERIZATION OF CHANGES IN SYSTEM BEHAVIOUR BY OUTPUT FEEDBACK
Toshio Saito · International Journal of General Systems · 1988
The purpose of this paper is to formulate in a general and unified manner the change of system behaviour produced by output feedback and then to clarify from a qualitative point of view its general structure and meaning. In this paper feedback is defined as a system transformation on the class of general linear systems represented by input-output relations. As a measure indicating the degree of how the behaviour of a system S⊂X×Y changes under feedback transformation three classes of systems are introduced for S and their system theoretic meaning is considered in a general setting. Furthermore, a variety problem of several structured systems under feedback transformation is investigated by characterizing these classes in terms of basic system concepts.