Active control of a composite plate: from the specific problem to an optimized solution

Didier Lang; Livier Reithler

doi:10.1117/12.208297

8 May 1995 Active control of a composite plate: from the specific problem to an optimized solution

Didier Lang, Livier Reithler

Proceedings Volume 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems; (1995) https://doi.org/10.1117/12.208297
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

This paper first presents the methodology to design and optimize a feasibility demonstrator for low frequency active control of a composite plate. The demonstrator has been achieved and the experimental results are shown. The major steps to design a smart structure are described. A review of active control strategies with associated hardware requirements as well as different implementation methods shows that the final system is strongly related to the problem to be solved due to the complexity of the structure, the computer efficiency and the expected final response quality. The aim of the study is to prove the feasibility to control the low-frequency (less than 100 Hz) vibrations of a carbon/epoxy composite plate under various mechanical excitations. Experiments were driven to characterize mechanically the composite plate as well as the PZT piezoceramic actuators. An original approach with dual analog-digital controller has been designed and realized, resulting in a simple system: microprocessor programmable switched capacitor low-pass filters and a PC fitted with a timing and digital interface board were used for the controller. Performances using analog filters and a least mean square algorithm are presented.

Citation Download Citation

Didier Lang and Livier Reithler "Active control of a composite plate: from the specific problem to an optimized solution", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); https://doi.org/10.1117/12.208297

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