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Proceedings Paper

Experimental study of model-based feedforward control of longitudinal wave transmission through hollow cylinders
Author(s): Ion Pelinescu; Balakumar Balachandran
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Paper Abstract

Experimental studies of closed-loop control of longitudinal wave transmission through a hollow cylinder are presented in this article. Model studies coupled with experimental modal analysis are used to understand and characterize the actuator-strut ensemble, and a boundary control algorithm, which falls under the class of feedforward control schemes, is experimentally implemented. The algorithm is based on a partial differential equations (PDE) model of the strut-actuator system, and a combination of strain and acceleration measurements are used to solve the boundary-value problem in the implementation. Harmonic vibratory disturbances are transmitted in the frequency range extending up to 1 kHz, and it has been demonstrated that a vibration attenuation of up to 16 dB can be achieved by using a magnetostrictive actuator in this model-based control scheme.

Paper Details

Date Published: 15 July 2002
PDF: 12 pages
Proc. SPIE 4701, Smart Structures and Materials 2002: Smart Structures and Integrated Systems, (15 July 2002); doi: 10.1117/12.474677
Show Author Affiliations
Ion Pelinescu, Fraunhofer-IBMT Technology Ctr. (United States)
Balakumar Balachandran, Univ. of Maryland/College Park (United States)

Published in SPIE Proceedings Vol. 4701:
Smart Structures and Materials 2002: Smart Structures and Integrated Systems
L. Porter Davis, Editor(s)

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