本論文主要探討與改善輕型電動機車的加速性能。首先研究輕型電動機車之電控系統架構，並製作一輪轂馬達驅動器，馬達驅動器主要由電源電路、控制單元與馬達驅動電路所組成，其控制方式係採用六步方波驅動控制技術，藉由偵測油門轉把的電壓變化量來控制輸出電壓，以達到良好的速度控制。再搭配48 V 25 Ah鋰電池與2 kW輪轂馬達，安裝於市售電動自行車進行實車的加速測試，經濟部補助輕型電動機車之加速性能測試，全力加速行駛距離從零到一百公尺的時間須符合在12秒內，根據實車道路測試，本文所提出改善方法可符合輕型電動機車騎乘的加速性能需求。

This thesis mainly focuses on the acceleration improvement for light electric scooter. The first stage is to understand the control system framework of light electric scooter and make a hub motor controller. The controller consists of power circuit, control unit and motor driving circuit. The control method adopts six step trapezoidal control technology by measuring the voltage fluctuation value of throttle grip to control output voltage to reach optimal speed control. The second stage is to integrate with a 48 V 25 Ah Li-ion Battery and a 2 kW Hub Motor on an e-bike to implement an acceleration test. According to TES acceleration regulation, the target is less than 12 seconds from 0 to 100 meters. Based on road test, the result indicates the counter measures in this thesis likely meet the acceleration requirement of light electric scooter.

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