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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  Random vibration test control of inverter-fed electrodynamic shaker

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/12432

    Title: Random vibration test control of inverter-fed electrodynamic shaker
    Authors: Liaw CM
    Yu WC
    Chen TH
    教師: 廖聰明
    Date: 2002
    Publisher: Institute of Electrical and Electronics Engineers Inc.
    Relation: Industrial Electronics, IEEE Transactions on
    Volume 49, Issue 3, June 2002 Page(s):587 - 594
    Keywords: current control
    electrodynamic shaker
    random vibration control
    robust control
    Abstract: The random vibration control of an inverter-fed electrodynamic shaker is presented in this paper. First, the dynamic model of the shaker is found and a current-controlled pulsewidth modulation inverter is designed and implemented. The feedback controller is augmented with a command feedforward controller and a disturbance feedforward controller to let the armature exciting current have low harmonic content and possess excellent waveform tracking performance. Then, an acceleration controller and its random vibration command are arranged. In the proposed acceleration control scheme, a command feedforward controller and a robust disturbance feedforward controller are also employed to let the shaker have close random acceleration command waveform tracking control performance, and the performance be insensitive to the system parameter variations. It follows that the acceleration control with desired frequency response in a vibration test could be achieved through properly setting the command signal. The effectiveness of the proposed control scheme is verified by simulation and measured results.
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/12432
    Appears in Collections:[電機工程學系] 期刊論文

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