In the application of micro motors, the rotational speed is very important. Some products require tens of thousands of revolutions, while others require dozens of revolutions. Therefore, micro motor manufacturers need to adjust and configure the rotational speed of micro motors according to customer needs during the research and development process. So how is the speed of the micro motor adjusted?
First of all, let's talk about the speed adjustment method of low-speed micro-motor
Micro DC motors are generally produced at about 1,000 revolutions. If the rotational speed needs to be tens of revolutions, it must be achieved by installing a gear reducer. For example, the reduction ratio of 1:50 and 1:80 can Reduce the speed of the motor. This low-speed micro-motor has a large torque and is generally suitable for smart locks, 3D pens, label printers and other products.
Gearbox
The above are the low-speed micro-motors and speed adjustment methods. For micro-motors that require high speed, we can perform the following methods:
Armature voltage adjustment
The voltage has a great influence on the operation of the micro motor. The speed of the micro motor can be changed by adjusting the voltage, which is suitable for a wide range of speed adjustment.
ange 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 speed regulation range is small.
Resistance adjustment
Adjusting the resistance can directly change the magnitude of the current, so adjusting the resistance can directly change the speed of the motor (the higher the current, the faster the speed). This method is inefficient, and if you do not understand the characteristics of the motor, it will directly burn the motor due to excessive current.
In fact, you need to change the speed of the micro motor and leave it to a professional micro motor manufacturer. The adjustment of the speed of the micro motor is very important. If you have to operate it yourself, you must adjust it in the correct way to avoid losses.
