考量傳動系統之電動代步車結構分析與改良設計

Structural Analysis and Improvement Design of An Electric Scooter with Transmission System

張育菁(Yu-Ching Chang)

指導教授 ： 鍾添東

國立臺灣大學/工學院/機械工程學研究所/碩士(2019年)

https://doi.org/10.6342/NTU201902296

摘要

本研究之目的為研究電動代步車傳動系統內部的齒輪參數化建模方法以及傳動系統與車體之各項結構分析，提出對於電動代步車傳動系統與車體的結構設計與改善策略，並開發一套結合AutoCAD繪圖軟體Visual Lisp 程式語言、Microsoft Excel試算表軟體、ANSYS有限元素分析軟體的參數化繪圖及參數化結構分析程式，以改良靜態結構特性。首先，對電動代步車傳動系統中的傘齒輪及螺旋齒輪對做彎曲應力分析，對傳動軸結構做靜態傳動分析，並對車體結構做各項耐久測試分析。並且針對傘齒輪、螺旋齒輪、傳動系統結構各零件做靈敏度分析，車體結構做最佳化分析。最後根據各項變數靈敏度分析以及最佳化分析的結果提出改良結構設計，比較原始及改良後的靜態結構特性，並顯示出改良後的電動代步車為較佳的結構設計。藉由本研究開發之工具及程式，從建模、應力分析到靈敏度分析的過程皆為自動化，簡化繁雜的參數設定過程，使改良設計過程更有效率。

關鍵字

電動代步車 ； 傳動系統 ； 有限元素分析 ； 靈敏度分析 ； 齒輪參數化建模

並列摘要

This thesis studies the structural analysis and improvement design of an electric scooter structure with considering gear design parameters of the transmission system. A program integrating ANSYS, AutoCAD and Microsoft Excel is developed for automated structural modeling and finite element analysis. The analysis considered in this research includes stress analysis of bevel gear and helical gear, static analysis for the electric scooter transmission system structure, endurance analysis of electric scooter structure. The sensitivity analyses also applied to component parameters. The improvement design is proposed according to the results of sensitivity analysis and optimization analysis. Final, static characteristics of the original and improved electric scooter structures are compared, and it shows that the improved electric scooter is a better structural design. The whole process from modeling, stress analysis to sensitivity analysis is automated, and it has better result and efficiency.

並列關鍵字

Electric Scooter ； Transmission System ； Finite Element Analysis ； Sensitivity Analysis ； Parametric Drafting of Gear

參考文獻

[1] Scooter S542 Yoga, “Portable Folding Electric Scooter”

[2] S542 Owner’s Manual

[3] Anand B. Rathod, Vinay J. Patel and P.M.Agrawal, “A parametric modeling of spur gear using ProEngineer,” National Conference on Recent Trends in Engineering & Technology (2011).

[4] Naiming Miao, “Research on the Parametric Design of Involute Helical Gear Based on Pro/Program,” Advances in information Sciences and Service Sciences, Vol. 4, No. 21(2012)

[5] Akinnuli B. O., Ogedengbe T. I. and Oladosu K. O., ” Computer Aided Design and Drafting of Helical Gears,” Journal of Emerging Trends in Engineering and Applied Sciences, Vol. 3, No. 6, pp. 959-968 (2012)