2nd International Conference on Mathematics and Computers in Sciences and in Industry, MCSI 2015, Sliema, Malta, 17 - 19 August 2015, pp.72-75
© 2015 IEEE.This paper deals with the robust stability of a discrete time stable state space system subject to structured real parameter uncertainty. Using Lyapunov's Theorem and Stein's equation the radius of a stability hypersphere in parameter space is derived from the structure matrices, with the property that all for parameter perturbations lying within the hypersphere stability of the system matrix is preserved. A numerical example is provided.