Abstract
In this paper we investigate a discrete-time servomechanism design for a parabolic distributed-parameter system with constant disturbances. The problem is to design a discrete-time feedback controller such that the resulting continuous-time closed-loop system will be stable and the discrete-time controlled output will converge to the constant reference vector. We construct a servomechanism using the concepts of state feedback and output feedback through an observer. The design procedure is basically a modal approach which is realized in finite-dimensional theories and algorithms. Explicit sufficient conditions are given for the existence of a finite-dimensional servomechanism.
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