| 摘要 |
The speed control module includes a sensing element installed in a motor for detecting a position of magnet of rotor; a power switch connected to the motor for switching on/off control signals sent to the motor; a main controller connected to the power switch and sensing element for processing half-wave feedback signals from the sensing element and sending the signals to the motor via the power switch; and speed adjusting element connected to the main controller for receiving external information and providing to the main controller. When the motor is operating, the half-wave feedback signals of the sensing element vary because of continuous rotation of the magnet of rotor. The main controller outputs a three-phase voltage to change the magnetic field of the stator coil, so that the motor speed can be smooth and stable.
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