Stable and structurally stable regulators for singular systems

This paper deals with the structure, the existence conditions and the design methods of the stable and structurally stable regulators for the singular system . Two classes of normal regulators are proposed: the first class of them, using the measurementy as its input, is applicable to the situation where the structural parameter pecturbations (especiallyE) is constrained. On the other hand, the second class of them, usingy and as its input, is applicable to arbitrsry perturbations in the sense for singular systems of the structural parameters. But this is done at the cost of additional equipment to measure the (the speed ofy).