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.


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    Title :

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


    Additional title:

    Aktive Schwingungsregelung einer Satellitenauslegerstruktur unter Verwendung optimal positionierter, gestapelter, piezoelektrischer Aktoren


    Contributors:

    Published in:

    Journal of Sound and Vibration ; 292 , 1/2 ; 203-220


    Publication date :

    2006


    Size :

    18 Seiten, 7 Bilder, 2 Tabellen, 21 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English