How to adjust the speed of a hollow cup motor in a beauty device?

The DC motor is the core component of a beauty device, with the device's vibration and rotation achieved through the DC motor. The DC motor in a beauty device can function as a vibration motor, gear motor, drive motor, or hollow cup motor (coreless motor), among others. The motor's speed is closely related to the massage intensity and suction power. Therefore, speed regulation of the beauty motor is extremely important.

The hollow cup motor in a beauty device differs from ordinary drive motors, primarily in its rotor design. The hollow cup motor uses a coreless rotor, which eliminates the power loss caused by eddy currents generated by an iron core. This structure also significantly reduces the weight and rotational inertia, as well as the mechanical energy loss of the rotor itself.

Due to the adoption of a hollow cup motor in beauty devices, the change in rotor structure greatly enhances the motor's performance. It not only boasts outstanding energy-saving features but also offers controllability and multi-motion capabilities that are unattainable with ordinary iron-core motors.

So, how is the speed of the hollow cup motor in a beauty device controlled? The following will provide a brief overview from WKX Motor. The speed regulation of the hollow cup motor in beauty devices is mainly based on the linear relationship between the DC motor's speed, voltage, and load. The primary speed regulation methods can be broadly categorized into two types:

(1) No-load speed regulation is related to voltage; controlling the voltage of the hollow cup motor is the key to achieving no-load speed adjustment.

(2) Load speed regulation is related to the load; the controller receives feedback signals from an encoder connected to the motor, performing specific calculations to control and adjust the load voltage or duty cycle of the hollow cup motor in the beauty device, thereby regulating the speed.

These are the speed regulation methods for the hollow cup DC motor in beauty devices. For more information about micro DC motors, please continue to follow WKX Motor.