Abstract
This paper describes a substructure-based, decentralized approach to designing local output feedback controllers for flexible structures. By local output feedback, we mean that control loops are closed only between sensors and actuators that are spatially close to each other. The method is a decentralized one because the structure model is decomposed into subsystems for which output feedback controllers are designed. These subsystems are substructure models whose boundaries have been loaded with generalized degrees of freedom representing the static modes of adjacent substructures. The approach represents a synthesis of decentralized controller design methods with well-known component mode synthesis concepts and describes a unique approach to vibration suppression in flexible structures with local feedback control.
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