行星齒輪式轉向系統之分析與設計

Analysis and Design of Planetary Gear for Vehicle Steering System

林凱毅(Kai-Yi Lin)

指導教授 ： 尤正吉

國立臺北科技大學/機電學院/車輛工程系所/碩士(2010年)

摘要

目前汽車轉向系統大多使用齒條小齒輪將馬達之旋轉運動轉換為直線運動，齒條小齒輪雖有良好的機械效率但若配合馬達和減速機構之使用後加大了整體系統的整體尺寸，不僅提高了製造成本且造成空間佈置之困難度。因此本研究規劃以成本較低且體積較小之行星齒輪組取代既有機構，並進行機構運動設計以符合本研究所需之直線運動。本研究初步規劃以基本行星齒輪直線機構為基礎發展新型三自由度行星齒輪轉向機構，此機構可參考方向盤轉角及車速，調配左右輪馬達轉角，達到可變齒輪比之功能，進而達到需求之車輛轉向條件。

關鍵字

行星齒輪機構 ； 直線運動 ； 三自由度

並列摘要

Most of steering systems use the rack and pinion to transform the rotation of motor into straight-line motion currently. The rack and pinion have good performance in mechanical efficiency, but the overall size will increase when the motor and gear box are used .Not only the manufacturing cost raise ,but the spatial arrangement becomes complicated. Therefore, this study plans to substitute the lower cost and smaller size of the planetary gear set for the existing mechanism to meet the required straight-line motion. In this research, the new straight-line motion mechanism use a basic five planetary gear set with the ring gear fixed and sun gear input. In this study, the three-DOF gear steering mechanism is based on the basic planetary gear straight line , the mechanism refer steering angle and speed to adjust the motors to achieve the appropriate steering condition.

並列關鍵字

Planetary Gear Set ； Straight-line Motion ； Three-Degree-of-Freedom

參考文獻

[20] 劉思佳，三自由度混合動力裝置之分析與理念設計，碩士論文，國立台灣大學機械工程學研究所，台北，2007。

[3] W. Klier, G. Reimann and W.Reinelt, “Concept and Functionality of the Active Front Steering System, ”SAE paper No. 2004-21-0073.

[4] P. Koehn and M. Eckrich, “Active Steering-The BMW Approach Towards Modern Steering Technology,”SAE Paper, No.2004-01-1105.

[7] F. Buchsbaum and F. Freudenstein, “Synthesis of Kinematic Structure of Geared Kinematic Chains and other Mechanisms,”Journal of Mechanism, Vol.5. pp.357~392, 1970.

[8] F. Freudenstein, 1971, “An Application of Boolean Algebra to the Motion of Epicyclic Derives ,”ASME Journal of Engineering for Industry, Series B, 93, pp. 176~182.