Controller and method for improving motor driving efficiency

摘要

The present invention discloses a controller and a method for improving motor driving efficiency. According to the present invention, multiple control parameters are inputted to the controller so that the controller can adjust timings of PWM driving signals for driving the motor to advance or delay the turned-ON or turned-OFF points, whereby the motor is driven efficiently.

主权项

1. A controller for improving motor driving efficiency, the controller supplying a PWM driving signal to a driver circuit, the controller comprising:
a motor speed/period detection unit receiving a signal relating to a motor and detecting the speed and period of the motor; a PWM signal timing calculation unit receiving a plurality of parameters and an output from the motor speed/period detection unit, and determining a timing of the PWM driving signal so that a turned-ON point of the PWM driving signal is earlier than a level switching point of the signal relating to a motor; and a PWM signal generation unit generating the PWM driving signal according to an output from the PWM signal timing calculation unit.