© 1994 by Institute of Mathematics and its Applications
On stability radii of infinitedimensional timevarying discretetime systems
Institut für Dynamische Systeme, Universität Bremen D28334 Bremen, Germany
This note introduces a stability radius for discretetime linear timevarying systems on Banach spaces under structured timevarying perturbations of multipleoutput feedback type. Additive perturbations are considered which can be represented as a series of infinitely many perturbation terms. We derive counterparts to some results established for timevarying differentiable systems in [5, 7] and apply the results to periodic systems.