Development of Electric Power Assistant System for E-bike

• Main Authors: Wen-BinLin, 林文斌
• Other Authors: Ming-Yang Cheng
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/23896514525299459092

碩士 === 國立成功大學 === 電機工程學系專班 === 98 === In recent years, due to the fact that environmental awareness has risen and more peoples realize the importance of fitness, the development of the power-assisted e-bike is becoming increasingly important. This thesis is aimed at conducting an in-depth study on the related issues concerning the power-assisted e-bike. The topics discussed in this thesis consist of two parts: 1.motor selection and motor drive design; 2. the development of power assist compensation strategy. In this thesis, the brushless DC motor is used to implement the hardware of the power-assisted system. The dsPIC30F4011 micro controller is used as the computing kernel of the drive circuit of the BLDC motor developed in this thesis. In addition, with the consideration of cost and efficiency, this thesis employs the PI-type closed-loop torque observer and the PI-type current loop controller rather than the more expensive force sensors in order to help realize the power-assisted system. In addition, to verify the feasibility of the proposed power-assisted approach, a performance comparison between the e-bike systems with or without the power-assisted function is performed. Experimental results indicate that the proposed approach is indeed feasible and can achieve satisfactory performance.