A power supply that can provide a stable voltage and frequency is called an AC stable power supply. 

At present, most domestic manufacturers are working on AC voltage stability.

Yaskawa Electric is a professional manufacturer in the field of motion control, with products such as 

high-power ordinary motors, servo motors, and frequency converters. Yaskawa is a Japanese company

 that pioneered servo motors, and its products are known for their stability and speed. In China, 

Yaskawa Servo has occupied a portion of the market share for many years