| 研究生: |
曾俊諺 Tzeng, Chun-Yen |
|---|---|
| 論文名稱: |
電動腳踏車之自動變速系統 System of automatic transmission for electric bicycle |
| 指導教授: |
李森墉
Lee, Sen-Yung |
| 學位類別: |
碩士 Master |
| 系所名稱: |
工學院 - 機械工程學系 Department of Mechanical Engineering |
| 論文出版年: | 2013 |
| 畢業學年度: | 101 |
| 語文別: | 中文 |
| 論文頁數: | 35 |
| 中文關鍵詞: | 中置式電動腳踏車馬達 、自動變速 、臨界速度 |
| 外文關鍵詞: | middle-mounted E-bike motor, automatic shift-change, critical speed |
| 相關次數: | 點閱:133 下載:13 |
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中置式電動腳踏車馬達,可利用現有的腳踏車變速器達到變速的功能,但變速時機仍須依賴使用者憑騎乘感覺做適當的切換。不適當的切換檔位,會造成動力損失或腳踩踏力過重。本計畫研發一套自動變速系統,由直流馬達為動力的自動變速機構,並以PIC16F877單晶片為運算核心,製作控制器與設計控制邏輯,使用C語言將邏輯撰寫成PIC16F877程式語言。
實際測量方面,紀錄車速、曲柄轉速、馬達消耗的電流值,藉由數據來決定升檔時的臨界速度與降檔時的臨界速度,分析消耗功率以證明自動換檔達到節省能源之效果。
The middle-mounted E-bike motor mechanism can achieve the function of shift-change of the derailleur existed in a general bicycle. However, the proper timing of shift-change has to rely on the rider’s feeling and personal judgment. If the shift-change timing is not proper when a bicycle is ridden on a various road, it can lead to power waste or serious pedal force. Therefore, in this paper, a system of automatic transmission is studied and developed. The original power of mechanism is from a 12V DC motor. Take PIC16F877 as the computing center of the controller, and turn the logic to C programming language.
Measure some parameter, like speed, crank rotate speed, current consumption. Decide the critical speed by the parameter. Finally, by analysis the power consumption to prove that it can reach the effect of energy saving.
[1]http://www.giant-bicycles.com/zh-TW/
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[7]蔡宗成,“ PIC16F877單晶片原理簡介.pdf ”,元智大學最佳化設計實驗室,2001年11月19日。
[8]Wilson, D. G., Bicycle Science Third edition, The MIT Press, 2004.