Control system of electric bike based on ARM

LI Hua-ming， LU Ling-xia， CHEN Hai-yang
（College of Electrical Engineering， Zhejiang University， Hangzhou 310027， China）

Abstract： Aiming at the diversified demands for the functions of e-bikes，the basic and potential functions of the e-bikes were analyzed，and a control system embedded with ARM microcontroller LPC2214 was designed for the e-bikes driven by brushless DC motor. With the system，the basic functions of e-bikes were realized and extensibility of functions was enhanced. The hardware and software for the key functions were expounded. Appropriate control strategy was applied to improve the basic functions. The bike could be set to work in electric，cruise or boost mode and its operating states were displayed on the TFT，thus the user experience was improved. The results indicate that the speed regulation is steady and rapid，the man-machine interface is friendly，the hardware is concise and the protection functions are reliable.
Key words： electric bike； speed regulation system； brushless DC motor； LPC2214； ARM