Research and design of electric vehicle controller based on brushless DC motor

This article deals how to design a complete e-bike controller system by STM32 chip microcomputer. The circuit is mainly used for controlling the brushless DC motor, when we design the power inverted circuit, we usually check resistors voltage to detect the current and then send the data to CPU to complete the current closed loop system. However, when the controller is used in high power levers, the heavy current will cause some power loss. In order to improve this problem, we can detect the current according to the MOSFET tube resistance, and then we put the signal into the differential amplifier to make the signal accurate. Finally we may make the controller available on aluminum base board.