An improved method for determining the stability of interval matrices

In this paper, the problem of the stability of interval matrices has been t ackled using the properties of real stability radius. Based on these, a nec essary and sufficient condition has been developed for the Hurwitz (Schur) stability of an interval matrix. An algorithm has been suggested on the bas is of the above results to determine the stability of such a system. This w ork provides an alternative tool to that proposed by Wang et al. and it has been claimed, on the basis of comparative results, that it is a more effic ient method in terms of both the computation time and the number of matrice s to be checked.