Finite-time instability of time-varying linear singular systems

The main features of the finite-time instability concept are presented for both time-invariant and time-varying linear singular systems operating in free and forced regime. New results for the above-mentioned class of systems are in the form of sufficient conditions, derived by using a Lyapunov-like approach. The paper presents generalization of previously gathered results and their extension in treating finite-time instability. The paper is a continuation of the stability treatment carried out by the authors (1998).