現階段市面上的電動二輪車由於機械結構的簡易與馬達操作特性考量，普遍使用單馬達直驅傳動系統，因機械結構之複雜度及馬達性能會影響電動二輪車之體積、安全性與成本。而可變速比功能可減低馬達規格上之要求及改善車輛操作性能，多重動力輸入可擴大車輛操作點範圍，使得操控上的靈活度提升及降低馬達規格上的要求，但換檔之順暢性通常需要複雜之機械結構，因此不適合使用於電動二輪車，且若無適合之功率分流機構與控制策略，多重動力之輸入難以使轉速同步，導致無法達成有效之動力輸出，故本論文提出一套動力調控模組，雙馬達之輸入經由行星齒輪系耦合使得整體操作區間增大，且達成可變速比之功能，以及提出動力調控模組之控制策略，因此可透過數位調控操作兩馬達之輸出以改變車輛之行駛狀態，透過本研究提出之控制法搭配動力調控模組使用於電動二輪車可在不過於增加機械結構複雜度的條件下提升車輛效能，降低各別馬達之性能要求且引入數位調速比之功能，最後經由模擬與實驗做驗證，結果顯示整體車輛運轉性能提升。

Currently, most two wheeled electric vehicles utilize single motor single-speed transmissions due to their mechanical simplicity and motor operation characteristics. Mechanical complexity as well as motor requirements are a major concern due to space constraints, safety, and cost. Variable gear ratios can be desirable to reduce the requirements on motors, as well as provide adjustable performance capabilities. Furthermore, the use of multiple power inputs can increase the total operation area that the power inputs can cover, providing flexibility and reducing motor requirements. However, it is difficult to achieve smooth gear shifting without complex mechanisms, which may not be suitable for electric two wheeled vehicles due to space constraints. Without an appropriate power split coupling mechanism or control strategy, it is also difficult to synchronize multiple power inputs such that they can be combined effectively to produce an overall output. In this research, a power split module is proposed that utilizes two motor-inputs applied to a planetary gear train to effectively couple the motor inputs and increase total operation area, while achieving variable gear ratio functionality. A control strategy for the module is also proposed, controlling the main and assist motors such that performance can be electronically adjusted through a controlled variable. By doing so, a power split module suitable for use as a transmission in an electric two wheeled vehicle is proposed, improving performance and allowing for electronically adjustable performance without greatly increasing mechanical complexity. Simulation and experiments are done to verify the performance of the proposed power split module, and the results show that overall requirements are satisfied while achieving adjustable performance and reducing individual motor requirements.

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