Can a brushless motor icludes brushless dc motor,dc gearmotor,etc. maintain a constant speed when the load changes?

The answer is: yes.

If the load applied to a brushless motor changes, whether it increases or decreases, the motor can maintain a relatively constant speed.

Simple explanation is this: This is because brushless DC motors are designed to operate at constant voltage and current. When the load changes, the motor controller will detect the change in speed and start adjusting the input power to the motor. During this process, the speed of the motor will change momentarily and then slowly return to the rated speed.

The time required to return to rated speed is determined by the inertia of the motor rotor. The smaller the inertia, the shorter the recovery time, the larger the inertia, the longer the recovery time.

Of course, the change in load must be below the motor's rated torque for the autoregulation process to work.

The detailed explanation of this problem is: Brushless motor constant speed control means that under a given power supply and load, the brushless motor can continuously maintain a certain speed, thereby achieving the purpose of constant speed control.

The function and principle of constant speed control of brushless motors mainly include the following six aspects:

1. Power supply control: The constant speed control of the brushless motor requires controlling the power supply. The output voltage of the transformer can be adjusted through the transformer to control the speed of the brushless motor, thereby achieving the purpose of constant speed control.

2. Load control: The constant speed control of the brushless motor also needs to control the load. The speed of the brushless motor can be adjusted by reducing the load to achieve the purpose of constant speed control.

3. Torque control: The constant speed control of the brushless motor requires controlling the torque. The torque of the brushless motor can be controlled by adjusting the parameters in the control circuit to achieve the purpose of constant speed control.

4. Current control: The constant speed control of the brushless motor requires controlling the current. The current in the circuit can be continuously changed by changing the parameters of the controller to achieve the purpose of constant speed control.

5. Capacitor control: Constant speed control of brushless motors also requires controlling the capacitor. The voltage of the capacitor can be adjusted to change the current in the circuit, thereby achieving the purpose of constant speed control.

6. Frequency conversion control: The constant speed control of the brushless motor also needs to control the frequency conversion. The frequency of the frequency converter can be changed to change the current in the circuit, thereby achieving the purpose of constant speed control.