臺灣博碩士論文加值系統

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.

中文摘要............................................I
ABSTRACT..........................................II
誌謝..............................................III
目錄...............................................IV
表目錄.............................................VI
圖目錄.............................................VII
第一章 緒論..........................................1
1.1 前言............................................1
1.2 研究動機與方法....................................2
1.3 文獻回顧.........................................4
1.4 論文架構.........................................6
第二章 機構設計.......................................7
2.1 機構原理.........................................7
2.2 設計過程.........................................8
2.2.1 初期設計.......................................8
2.2.2 測試並修改設計.................................10
第三章 控制器........................................12
3.1 控制器架構.......................................12
3.1.1 整體架構.......................................12
3.1.2 運算核心.......................................13
3.1.3 速度感測器.....................................14
3.2 單晶片介紹.......................................15
3.3 控制邏輯........................................16
第四張 測量結果......................................17
4.1參數設定.........................................17
4.1.1以人體工學探討適當曲柄轉速........................17
4.1.2 量測數據......................................22
4.2量測結果與討論....................................31
第五章 結論.........................................32
參考文獻............................................34
自述...............................................35

[1]http://www.giant-bicycles.com/zh-TW/
[2]李森墉、林水木、許哲嘉，“電動腳踏車驅動機構(一)，中華民國發明專利証書第I 296597 號 (專利期間：2008, 05, ~ 2026, 03)。
[3]陳曜承，“智慧型控制介面於軍用腳踏車應用之研究，碩士論文，國防大學中正理工學院兵器系統工程研究所，2005。
[4]Masahiko Fukuda, “MOTOR DRIVEN DERAILLEUR, United States Patent #6,162,140, 2000.
[5]Kazuhiro Takeda, “BICYCLE SHIFT CONTROL APPARATUS THAT SELECTIVELY RESTRICTS SPEED STAGES, United States Patent #6,959,941 B2, 2005.
[6]Ryuichiro Takamoto, “BICYCLE SHIFT CONTROL APPARATUS THAT CANCELS A TENTATIVE SHIFT, United States Patent #7,290,779 B2, 2007.
[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.