四弦型非對稱光學讀取頭致動器模態共振分析與抑制; Analysis and suppression the resonance of a four-wire-suspension asymmetric-type optical pickup actuator

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Title:	四弦型非對稱光學讀取頭致動器模態共振分析與抑制;Analysis and suppression the resonance of a four-wire-suspension asymmetric-type optical pickup actuator
Authors:	王竣耀;Chun-yao Wang
Contributors:	機械工程研究所碩士在職專班
Keywords:	光學讀取頭;致動器;共振;optical pickup;resonance;actuator
Date:	2010-08-10
Issue Date:	2010-12-08 13:43:14 (UTC+8)
Publisher:	國立中央大學
Abstract:	此論文是利用ANSYS有限元素分析軟體對四弦型非對稱光學讀取頭致動器進行模態與頻率響應的模擬分析，再以所得到的分析結果對分析模型逐步改善，使其顯現出對1KHz與10KHz間的模態共振與頻率響應造成影響的因素。　　將實驗取得數據並與模擬分析數據作比對，可得知所建立的模擬分析模型所得的分析數據與實驗數據有相近的特性曲線，則得以證實經過改善後的分析模型與實體致動器有一定的相似性。　　在改善分析模型的過程中可知抑制其激振傳遞的方式,同時, 透過最終的分析模型可得知，是由驅動力的反作用力激振致動器的不可動部，再經由弦線傳遞至可動部導致制動器在1KHz與10KHz間的模態共振與頻率響應異常。 ANSYS,　the　finite　element　simulation　software,　is　used　to　analyze　the　dynamic　characteristics　of　a　four-wire-suspension　asymmetric-type　optical　pickup　actuator.　The　attention　is　focusing　on　the　frequency　responses　between　1KHz　and　10KHz.　The　FEM　model　of　the　actuator　is　modified　according　to　comparison　of　the　numerical　and　the　experimental　data. 　　　　It　can　be　proved　that　the　flexible　PCB　can　reduce　the　transmissibility.　Also,　the　unmovable　parts　can　actually　be　affected　by　the　driving　force　of　the　voice　coil　motor,　which　passes　through　wires　and　causes　unexpected　responses.　Then,　certain　design　improvements　are　made　based　on　the　numerical　results.
Appears in Collections:	[Executive Master of Mechanical Engineering] Electronic Thesis & Dissertation

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