5550 POSTER Clinical values of PET-CT compared to conventional radiologic imaging in head & neck cancer

Abstract

In this paper we discuss the problem of output invariance against disturbance (DID). A method is worked out to inspect whether the system with arbitrary disturbance has an output invariance. The importance of the method especially lies in that the problem of determining state feedback matrix which is used to realiz e output invariance against disturbance can be solved only by solving a system of simultanous linear equations. This appro ach is simple and brief to be easily acceptable to engineers and realizable on digital computer. Conditions for solvability are also given provided that the disturbance model is known.