本研究的主要目標，在於探討電流變液隔振墊圈在光碟機減振之應用，電流變液是一種智慧型材料，會隨著所施加的電場而做改變，進而造成剛性與阻尼之變化，因此使用其特性來設計隔振墊圈，對於光碟機的減振會有所助益。本論文可分為三部分來看，首先利用黏彈性理論並配合動態特性實驗，進一步得到油封橡膠及電流變液的儲存能模數與損失能模數，以提供之後的分析所使用，其次利用光碟機的數學模型進行減振之分析以及參數的設計，最後再以裝有電流變液隔振墊圈之光碟機的實驗來加以驗證，並得到完整的結論。

The aim of this research is to study the application of electrorheological fluid damper in reducing vibration of an optical-disk drive. Electrorheological fluid is an intelligent material that can change stiffness and damping by varying the electric field. Therefore, this property is employed to design an active damper to be applied to an optical-disk drive. In this thesis, the viscoelastic theory is utilized to explain dynamic behavior of rubber and electrorheological fluid. In addition, the storage modulus and loss modulus are measured by dynamic experiment and are employed to the analysis of vibrational behavior for an optical-disk drive. Moreover, the residual vibration that is generated by the unbalanced mass during high-speed rotation of the optical-disk drive supported with electrorheological fluid damper is measured. Comparing the experimental results to the theoretical ones, some phenomena are observed and disscussed.

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