The principle of brushless motor controller

Release Time:

2022-04-22 13:59

Principle of Brushless Motor Controller Basic Maintenance of Brushless Motor Controller Brushless Motor Controller Brushless Motor Controller is a control device that can be used to provide closed loop commutation control signals for three-phase brushless motors. At the same time, the mode can also be used to control the motor speed and carry out necessary protection for the motor. Brushless motor controller is much more complicated than brushed motor controller.

Functional features
Simple variable speed control can be carried out. All important currents are determined by a single external resistor. The starting and stopping of the motor are relatively simple. The starting timing sequence can be completed by using the power supply of the circuit. The independent operation control function can be completed by two capacitors. The new back EMF commutation technology is simply adopted in the peripheral circuit, which can provide small jitter-free torque and can carry out high-efficiency control. It has commutation PLC, the PWM spike noise signal can be effectively suppressed.

1., the motor no-load part of the motor is about 1.8A. When the control board does not work, first of all, the signal light on the board should flash in seconds/time. If the signal light does not flash without the switch signal, check whether the 1.5V voltage is normal, whether there is a short circuit in the external connector when abnormal, and whether there is a tin short circuit on the board. 2. Whether the voltage of the second pin of the single chip microcomputer is 5V;3. Whether the Shi Ying crystal works; 4. Whether the signal lamp is damaged. 2. controller current voltage adjustment 1. current adjustment: adjust the length of constantan. 2. Voltage adjustment: The undervoltage sampling circuit consists of two voltage dividing resistors of 48V or 36V power supply to ground. Usually, the undervoltage point can be adjusted by adjusting the resistor (Ra) connected to the power supply,