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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27622
標題: | 手輪馬達驅動之電動輪椅的設計與製作 Design and Manufacturing of Rim Motors on Electric Wheelchair |
作者: | Zhou-Han Lee 李周翰 |
指導教授: | 陽毅平(Yee-Pien Yang) |
關鍵字: | 手輪馬達,電動輪椅,弧形磁鐵,力矩漣波, rim motor,electric wheelchair,arc magnet,torque ripple, |
出版年 : | 2007 |
學位: | 碩士 |
摘要: | 本文研究目的為改善前兩代的手輪馬達,以提高力矩及降低力矩漣波和齒卡力矩為前提,設計出一個適合應用於電動輪椅的馬達。本文設計的馬達不需搭配減速機構即可輸出足夠的扭力來驅動電動輪椅,因此改善了傳統電動輪椅的效率,使續航力提升20~30%,重量方面也減輕不少。 馬達設計是先利用最佳化分析軟體找出最佳的尺寸,因此可以用最少的材料達到最好的性能輸出,再使用有限元素分析軟體來驗證並做細部的調整來降低齒卡力矩與力矩漣波。最後將製作好的馬達與輪椅結合,以數位控制器(FPGA)來控制兩顆直流無刷馬達,適時地調整兩輪速度而達到簡易差速的功能,並以搖桿作為人機介面來操控電動輪椅。 General electric wheelchairs are driven by a high speed motor with reduction gears and differential gears. The design poses several disadvantages because the wheel-chairs are inevitably heavy, big, and less efficient. In this study, a direct-drive brush-less DC rim motor is designed to produce enough torque without other mechanical de-vices. In this way, the electric wheelchair’s functions are enhanced with light weight. The dimensions of the motor are determined by optimal analysis, so the motor is designed with the least cost. The optimal sizes are simulated and verified by finite element analysis. Furthermore, the geometry is modified to reduce the cogging torque and torque ripple. The experiment results show that the performance of the whole wheelchair system is developed, meeting the standards set by this study. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/27622 |
全文授權: | 有償授權 |
顯示於系所單位: | 機械工程學系 |
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ntu-96-1.pdf 目前未授權公開取用 | 2.02 MB | Adobe PDF |
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