臺灣博碩士論文加值系統

在眾多型式的自動平衡裝置中，滾珠型自動平衡裝置具有構造簡單、組裝方便而且平衡效果佳的優點，因此成為本研究中主要探討的對象。研究過程中是以光碟機系統為載具，對於應用在光碟機上之滾珠型自動平衡裝置進行探討。首先建立不包含滾珠時整個系統的數學模型，並且推導出系統的運動方程式。接著再分別推導加入一顆及多顆滾珠後的系統運動方程式及滾珠本身之運動方程式。而在數學模式中，考慮了軌道的偏心及滾珠的滾動阻力影響。接著分別針對該兩項參數進行分析。分析的結果顯示，這兩個因素的存在都會影響到滾珠最後無法到達最佳的平衡位置，而造成系統殘餘振動存在。上述理論的分析結果，亦經由實驗設備的架構，證明滾珠在軌道中確實因為運動受阻而無法到達最佳平衡位置。在最後則是提出了降低軌道偏心以及滾動阻力的方法與新型自動平衡裝置的概念設計。

Because of the advantages of simple in construction, easily to assemble and has high capacity to compensate automatically for the unbalance of a rotor above the critical speed, the ball balancer is adopted in this research. However, the experimental results show that the ball balancer applied in the optical disk device has the problem of low consistence. To understand the reasons for low consistence, a mathematical model is first constructed for the purpose of theoretically investigating the dynamic behaviors of the foundation and balancing balls. A parametric study on the effects of eccentric race and rolling resistance are then performed. In addition, a test apparatus is constructed to verify the characteristics of the designed ball balancer. The experiment investigations show that the ball balancer is not effective against the unbalance as the wear of the raceway is severe. To cope with these problems, three new designs have been proposed in this research.

目錄
中文摘要……………………………………………I
英文摘要……………………………………………II
目錄…………………………………………………III
圖目錄………………………………………………V
表目錄………………………………………………IX
第一章 緒論………………………………………1
1-1 研究動機與目的……………………………1
1-2 文獻回顧……………………………………3
1-3 論文結構概述………………………………5
第二章 光學讀取模組之動態分析………………7
2-1 數學模型建立與運動方程式推導…………8
2-1-1 系統架構…………………………………8
2-2-2 運動方程式推導與動態分析……………9
2-2 加裝滾珠型自動平衡裝置光學讀取模組之動態分析…13
2-2-1 系統架構………………………………………………13
2-2-2 運動方程式推導………………………………………15
第三章 參數分析………………………………………………21
3-1 軌道偏心的影響…………………………………………21
3-2 滾動阻力 的影響…………………………………………33
3-3 滾珠尺寸r的影響…………………………………………39
3-4 流體拖引力D的影響………………………………………40
第四章 實驗系統架構與實驗結果……………………………50
4-1 實驗架構與儀器設備……………………………………50
4-2 實驗結果…………………………………………………53
4-3 結果與討論………………………………………………59
第五章 自動平衡裝置設計之考量與創新設計………………61
5-1 自動平衡裝置設計之考量………………………………61
5-2 創新設計…………………………………………………64
第六章 結論……………………………………………………67
參考文獻…………………………………………………………69

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