ABSTRACT
Electric bicycle with zero pollution, high efficiency, low noise,
light and beautiful features considered the true "green
transportation", is particularly suitable for use in the higher
concentration of the big city, but the electric bicycle on the market
still exist some imperfect places, especially for motor control
aspects need to be further improved. Brushless DC motor is the main
component of electric bicycle, electric bicycle control is the
control of the brushless DC motor, working condition control of
Brushless DC motor speed control system applicable to electric
bicycles and other small power. And the excess power back. This
system has the advantages of good speed performance, high power
factor, energy saving, small size, light weight etc..
This design is AT89C51 single chip microcomputer to control based
on brushless DC motor, speed control motor, the over-current
protection, undervoltage protection and the setting of the brushless
DC motor, battery brake protection. The design of simple structure,
reliable performance, easy to use
KeywordsBrushlessDC motor, MCU,ADC0808, Electric Bicycle
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