Abstract

The control of a distributed-parameter system can be effected by a transformation to a finite-dimensional discrete system in terms of modal coordinates. If only a limited number of modal coordinates is controlled, then a phenomenon that has come to be known as control and observation spillover occurs. Observation spillover has been demonstrated to cause instability in undamped systems. This paper shows that a minimal amount of damping can eliminate the instability, at least for the case considered.

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