How to increase the speed of the micro motor?

Micro DC motors are widely used in various electronic and electric products, and realize functions such as vibration and expansion through continuous rotation. In the driving process of the DC motor, many products need to adjust and change the speed to improve the use effect. The following is a brief description of the speed change method of the micro DC motor.

1. Adjust the resistance

Adjusting the resistance can directly change the magnitude of the current, so adjusting the resistance can directly change the speed of the motor. However, it can only have extreme speed regulation, and the smoothness is poor, the mechanical properties are soft, and the efficiency is low. If you do not understand the characteristics of the motor, it will directly burn the motor due to excessive current.

2. Adjust the armature voltage

The voltage has a great influence on the operation of the micro motor, and the speed of the micro motor can be changed by adjusting the voltage.

3. Change the electromagnetic strength

The operation of the micro motor is generated by the mutual movement of the electromagnetic and the rotating shaft. When the magnetic field strength changes, the rotational speed will change, so the rotational speed can be changed by changing the electromagnetic strength. This method can only weaken the magnetic flux of the micro motor, so that the The rated speed of the motor is shifted upward, which belongs to constant power speed regulation, and the dynamic response is slow. Although it can steplessly smoothly regulate the speed, the speed regulation range is small.

Reducing the voltage of the micro DC motor can reduce the speed, increasing or reducing the resistance of the armature circuit in series, can change the motor speed, reducing the excitation current can reduce the motor magnetic flux to increase the speed of the micro DC motor.