新型車輛動力分配裝置之發展

車輛在過彎行駛時，因內外側輪行走之路徑不同而有轉速差產生，傳統差速器則提供了自動分配內外側輪之轉速功能，使車輛易於過彎；但差速器也有缺點存在，當兩驅動輪其中一輪打滑時，其動力會從未打滑輪傳至打滑輪上，使車輛受困甚至失控。本研究發展了一套由兩組無段變速系統(CVT)所建構之新型動力分配裝置，分別提供左右驅動輪所需之動力，並具有車輛過彎時所需之差速功能及輪胎打滑時能使車輛易於脫困之特性。數學模型的建置將以牛頓第二運動定律為基礎，分別考慮輪胎及車身的受力情形，還有穩態的轉向特性，推導出車輛穩態之力平衡方程式；最後，部分數學模型將透過Adams/Car做相關的驗證。此外，本研究另建立三自由度偏航平面模型，進一步分析新型動力分配裝置之動態響應。

關鍵字

差速器；無段變速系統；三自由度偏航平面模型

並列摘要

When steering, because the different paths of inner wheel and outer wheel, it will cause the different speed of each driving wheel. The conventional differentials can modify the speed of each driving wheel automatically, so that the vehicle can steer smoothly; however, there are some drawbacks, for example, the traction force will be transmitted from the unslipping wheel to slipping wheel when one of the driving wheels is in the slipping condition, hence, the vehicle will be out of control. This study develops a novel power-spilt apparatus combined with two Continuous Variable Transmission (CVT), In addition, provide the different traction forces on each driving wheel to see the capability of the differential. Furthermore, the static equilibrium is based Newton second law in this study, then compare with the simulation in Adams/Car software. Finally, this study will build a three degree of freedom of yaw plane model to analysis this novel power-split apparatus.

並列關鍵字

Differential ； CVT ； 3DOF yaw plane model

參考文獻

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