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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/65991

    Title: 被動式狀態變換壓電吸振器應用於懸臂樑之減振;Reducing Vibration of a Cantilever Beam By Passive State-Switched Piezoelectric Absorbers
    Authors: 郭家成;Kuo,Chia-chen
    Contributors: 機械工程學系
    Keywords: 壓電吸振器;懸臂樑;狀態變換;振動控制;vibration control;cantilever beam;state-switched;piezoelectric absorber
    Date: 2014-08-22
    Issue Date: 2014-10-15 17:20:13 (UTC+8)
    Publisher: 國立中央大學
    Abstract: 本文主要目的為探討半主動式狀態變換壓電吸振器,應用於受外力作用而產生振動之懸臂樑,在懸臂樑表面貼附成對陶瓷壓電材料,外接一組由電阻、電感、二極體所組成之吸振電路,模擬類似機械式吸振器之吸振電路,並藉由二極體的限制電流方向之特性,電流分流之間的切換達到電路狀態變換的效果,即二極體之被動式控制取代由速度或位移回饋訊號之狀態變換吸振電路。
    ;The purpose of this research is to reduce the vibration of a cantilever beam by using state-switched piezoelectric absorbers. Two pieces of piezoelectric materials are attached to both sides of a cantilever beam. A state-switched absorbers consists of piezoelectric sheet, inductance, resistance, voltage source and a diode. The conducting state of diode determines the switching of circuit.
    Content of the thesis includes vibration reduction analysis of passive and state-switched absorbers. The equations of motion of the beam are derived by Hamilton’s principle and discretized by Galerkin’s method. Numerical program simultaneously solves the equations of motion of the beam and circuit equation of the absorber. Both of numerical and experimental results conclude effective designs of state-switched absorbers.
    Appears in Collections:[機械工程研究所] 博碩士論文

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