Abstract
In recent years, the waste gas from the gasoline-automobiles has caused severe pollution problems in cities. So, it's more and more important to develop the so called ‘green-automobiles’. Considering our country's status, to develop the e-bike will be helpful to solve the pollution problem. With the virtues of flexibility, slimness and zero waste-gas, e-bike is more and more popular.
This topic adoption stc12c5410 ads is that the lord controls chip. The design of hardware including MCU circuit, position of the rotor circuit, power circuit, hardware protection circuit and electronic commentator circuit have been carried out. There are three hall sensors for the position of the rotor, according to the position of the rotor and PWM (pulse width modulation) control signals, the electronic commentator works. The software was designed following the principle of modularization and structured programming and using C as the programmer languages. Typical PI control strategy is used to control the speed. Mode identified module can identify the angle of the BLDCM, the position of the rotor and the output of the system automatically. Less voltage protection, current excessive protection and wrong angle protection are designed to reinforce the system.
This kind of control system is superior in many fields such as high reliability, simple hardware structure, low cost, and convenient for the further development.
KeyWords Microcontroller E-bike Control System Brushless-DC-Motor