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研究生:陳志豪
研究生(外文):Jyh-Haur Chen
論文名稱:碟煞全避震自行車煞車性能與安全性分析
論文名稱(外文):The performance and Safety analysis of a disk-brake equipped with suspension systems
指導教授:宋震國
指導教授(外文):Cheng-Kuo Sung
學位類別:碩士
校院名稱:國立清華大學
系所名稱:動力機械工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2002
畢業學年度:90
語文別:中文
論文頁數:74
中文關鍵詞:碟煞避震自行車煞車性能煞車
外文關鍵詞:disk-brakesuspensionbicyclebrake performancebrake
相關次數:
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本論文探討自行車煞車性能與其對安全性的影響,以直線運動中的全避震自行車為載具,分析避震器性能與煞車力的交互影響關係,主要方向在於針對碟煞全避震自行車的前、後避震系統作設計分析以及行進時煞車性能的評估,並探討所建立的數學運動模型其參數對人車系統的安全性。文中利用拉格朗齊法推導全避震自行車在二維平面的運動狀態及煞車行為的運動方程式,並討論運動參數的影響,其中包括各種路況下自行車煞車理想性能分佈曲線、前後煞車力分配時間延遲對煞車行為的影響、避震器對顛簸路面騎行行為的影響、煞車行為下避震器的震動反應,以及最短煞停距離的考慮,以理想煞車力分佈曲線之觀念進行騎行的運動模擬。
根據研究的目的設計一自行車測試平台,以量測車體在等速度行進下,不同煞車力的施加情況下所反應的煞車行為、前後輪荷重變化,以及煞車煞停的距離。

This thesis presents an investigation on the interaction between the characteristics of suspensions and disk-brake safety performance. The study limits the bicycle riding along a straight path. Therefore, a mathematical model for in-plane dynamic analysis of the bicycle equipped with suspension systems is first constructed.
The dynamic equations, which governing the linear and rotational motions of the front and rear tires, the rotations of the swing arm, rear suspension and frame, linear motion of the front suspension, are then developed based on Lagrange method. The braking performance and the vibrations of suspensions of a bicycle riding along continuously bumping road are also analyzed. The braking force mainly results from friction between tires and road. Larger braking force would make wheels lock-up to generate danger. An ideal braking performance curve is drawn based on the distribution of braking forces between front wheel and rear wheel. Riding comfort is effected upon the suspension parameters.
Experiments study the effects of braking performance on bicycle riding safety has been performed .An experimental platform is employed mainly for measuring the forces including braking force, lateral force, front-wheel and rear-wheel load. The braking distance could also be estimated in this experiment.

ABSTRACTⅠ
摘要 Ⅱ
誌謝 Ⅲ
目錄 Ⅳ
圖目錄 Ⅶ
表目錄 Ⅹ
第一章 緒論
1.1 研究動機與研究目的
1.2 相關論文回顧
1.3 研究內容與方向
第二章 自行車騎乘力學
2.1 避震效應
2.1-1 避震系統理論基礎
2.1-2 避震器設計原理
2.2 前輪避震機構設計參數
2.3 後輪避震機構設計參數
2.4 整車煞車性能評估
2.5 前後煞車力分配
2.5.1 理想煞車力
2.5.2 坡道對理想煞車曲線的影響
2.5.3 煞車力對前避震器之影響
第三章 自行車避震系統運動分析
3.1 分析方法
3.2 運動理論公式
3.2.1 座標系定義
3.2.2 約束方程式
3.2.3 能量方程式
3.2.4 拉格朗齊方程式
3.3 Runge-Kutta Method
第四章 設計參數對安全性之影響分析與模擬
4.1 煞車力之模擬方法
4.2 路面狀況對行車之影響
4.3 全避震自行車理想煞車行為
4.4 避震器對煞車行為之影響
第五章 測試平台之架構與實驗結果
5.1 測試平台主結構
5.2 測試平台整體結構
5.3 實驗結果
5.3.1 平台校正與歸零
5.3.2 單(後)輪煞車力對系統之影響
5.3.3 雙輪煞車力對系統之影響
第六章 結論
6.1 結論
6.2 從整車觀點對煞車器設計建議
6.3 未來研究方向
參考文獻
附錄A

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