市面上普遍之電動腳踏車使用腳踏輸入與馬達輸入分離之單輸出系統，受限於電池的容量易導致電動腳踏車之續航力不足。本研究將設計一電動腳踏車雙輸入單輸出之傳動系統，將腳踏力與馬達力合併經由減速機構輸出，減少馬達消耗之電流，將電動腳踏車之續航力提到最高，並減輕騎乘者踩踏的負擔。
將傳動系統與腳踏車結合完成後，進行道路測試，實際記錄車速、曲柄轉速以及馬達消耗的電流值。最後分析此傳動系統與一般電動腳踏車消耗功率的差異以及馬達轉速跟腳踏轉速間的關係。

Prevailing electric bicycles in the market using independent systems with pedal input and motor input are limited by the capacity of the battery that lead to insufficient endurance of electric bicycles. This paper will design a double-input single-output transmission system for electric bicycle. The pedal force combines with the driving force of the motor as an output via a reducer that reduce the current consumption of the motor . This transmission system will enhance the endurance of the electric bicycles and reduce pedaling burden of the rider.
After the completion of the transmission system in conjunction with bicycle, conduct the road testing. Record the speed of the bicycle, the rotational speed of the crank and the current consumption of the motor. Finally, analyze the power consumption differences between this transmission system and general electric bicycle and the relationship between the rotational speed of motor and that of crank.

[1]Whitt, F. R. and Wilson, D. G., Bicycle Science, The MIT Press, 1985.
[2]李森墉、林水木、許哲嘉，“電動腳踏車驅動機構(一)”，中華民國發明專利證書第I296597號，2008。
[3]李森墉、林水木、許哲嘉，“電動腳踏車驅動機構(三)”，中華民國發明專利證書第I286522號，2007。
[4]李森墉、林水木、許哲嘉，“電動腳踏車驅動機構(四)”，中華民國發明專利證書第I308892號，2009。
[5]李森墉、林水木、許哲嘉，“電動腳踏車驅動機構改良”，中華民國發明專利證書第I296596號，2008。
[6]宋震國、孫上斌，“電動助動車之傳動控制系統”中華民國發明專利證書第381997號。
[7]茆尚勳, 國立成功大學機械工程學系博士論文, 2006