H∞ filtering of discrete-time Markovian jump singular systems via bounded real lemma and supermartingale-liked approach

This paper addresses the H-infinity filtering for discrete-time Markovian jump singular systems (MJSSs). While the existing researches have only given the sufficient conditions, in this paper a sufficient and necessary condition is established to guarantee that the filtering error system is regular, causal, stochastically stable and H-infinity performance in light of supermartingale-liked approach and property of conditional expectation as well as - bounded real lemma. For obtaining the filter, an equivalent matrix inequality to the obtained one in nonlinear form is provided in terms of congruence transformation. Thus the desired filter can be developed by choosing matrix variables with certain structures. Finally, two simulations are provided to show the effectiveness of the proposed techniques in this paper.