高速之往復系統於日常應用中,隨處可見,印表機即是一例,不過,由於往復運動所造成之振動,卻甚少有研究關注。有鑑於此,本研究主要在討論一質量塊架設在水平軸上做快速往復運動的系統,主要目的在降低系統快速作動下所造成的振動,研究過程中,首先利用3D軟體設計一簡單的往復系統模型,透過CAE的輔助分析,瞭解系統結構的穩定性,再參考分析結果,製作出一實驗之實體系統,供實驗量測及數據分析判讀,並提出減振改善方式。經本研究考量之減振方案有:(1)變更設計,如增加側壁壁厚、加肋補強或更換側壁材料,但此方案不是本研究範圍;(2)於移動質量塊上增設一被動式單擺系統,使能量由單擺來吸收,量測研究後發現,此單擺式之吸振系統在本研究快速之往復運動下減振效果有限,建議以後之研究可以從動扭轉式吸振器著手;(3)提出質量塊慣性移動之時間及距離,進而改善側壁振動變形量。經本研究之模擬後發現,確實能有效降低支撐壁上的搖擺振動,並將質量塊慣性移動之時間、距離及側壁位移三者間關係繪製曲線圖,作為提供後續之相關研究者減振之參考依據。
A high-speed reciprocating system, such as a printer, is popular nowadays. However, one seldom pay attention on the vibration caused by reciprocating system untie the vibration affects the print quality. Hence, this study mainly discusses how to reduce the vibration from the system. Firstly, the author designed a system model by a 3D software and analyzed the structural stability of this model by a CAE software. Secondly, the fabricated a physical system based on the analysis results for the purpose of experimental measurement. Finally, possible solutions to reduce vibration according to the finding were then given. The solutions via this dissertation are as followings: (1) To enhance thickness of side walls or increase the numbers of ribs. But this solution is not discussed in this dissertation. (2) To install a passive pendulum system on the moving mass in order to absorb the energy. Nevertheless, there is a limitation of the effectiveness while the reciprocating system is in a rapid movement. This study suggests that the future research may be undertaken on a two-degree-of-freedom tuned-mass damper. (3) To analyze the relation between the distance and time of inertial movement of the mass. According to the findings of the research, this solution can decrease the vibration of side walls effectively. The author thus drawn a line graph in terms of the relationship about the distance and time of inertial movement of the mass. The graph can be earily employed as the reference for the follow-up researchers.