Squaring down of non-strictly proper systems

Abstract

In an earlier work, a procedure for squaring down proper systems by static and dynamic compensators has been developed. The compensators designed there have the following properties: (a) they are asymptotically stable; (b) the additional finite zeros induced by them are assignable to the open left half complex plane; and (c) they preserve the fundamental properties such as stabilizability, detectability, infinite zero structure and minimum phase nature of the original system. The earlier design procedure is extended to non-strictly proper systems while retaining all the above-mentioned properties.