Active vibration control (AVC) of a satellite boom structure using optimally positioned stacked piezoelectric actuators

In this paper, results for active vibration control predicted from experimental measurements on a lightweight structure are compared with purely computational predictions. The structure studied is a 4.5 m long satellite boom consisting of 10 identical bays with equilateral triangular cross sections....

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Bibliographic Details
Published in:Journal of sound and vibration 2006-04, Vol.292 (1), p.203-220
Main Authors: Moshrefi-Torbati, M., Keane, A.J., Elliott, S.J., Brennan, M.J., Anthony, D.K., Rogers, E.
Format: Article
Language:English
Subjects:
Active control
Actuators
Boom
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Optimization
Physics
Satellites
Searching
Solid mechanics
Structural and continuum mechanics
Vibration
Vibration control
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Summary:In this paper, results for active vibration control predicted from experimental measurements on a lightweight structure are compared with purely computational predictions. The structure studied is a 4.5 m long satellite boom consisting of 10 identical bays with equilateral triangular cross sections. First, the results from a Fortran code that is based on a receptance analysis are validated against the experimental forced response of the boom structure. Exhaustive searches are then carried out to find the optimum positions for one and two actuators. Finally, a genetic algorithm is employed to find high-quality positions for three actuators on the structure that will achieve the greatest reductions in vibration transmission. Having found these actuator positions, experiments are then carried out to verify the quality of the theoretical predictions. It was found that the attenuation achievable in practice for one, two and three actuators were, respectively, 15.1, 26.1 and 33.5 dB.
ISSN:0022-460X
1095-8568
DOI:10.1016/j.jsv.2005.07.040