1results about How to "Reduce ripple voltage" patented technology

The application discloses a voltage stabilizing and adjusting circuit and a servo driver device. The voltage stabilizing and adjusting circuit comprises a rectifier bridge, an inverter circuit, a bus capacitor, a first inductor, a first capacitor, a first diode, a switching adjusting circuit and a control circuit. The switching adjusting circuit is arranged between the inverter circuit and the rectifier bridge and is used for controlling the input voltage of a motor. The control circuit is connected with the motor and the switching adjusting circuit respectively. The control circuit is used for acquiring a first voltage and a second voltage, identifying parameters of the motor and determining a third voltage based on the parameters of the motor. The control circuit is used for controlling the voltage stabilizing and adjusting circuit to be in a step-up state or a step-down state through the switching adjusting circuit based on the third voltage, the first voltage and the second voltage, so as to control the input voltage of the motor. In the above manner, the charging and discharging pressure of the bus capacitor is reduced, the ripple voltage of the bus capacitor is reduced, the service life of the bus capacitor is prolonged, the size of the servo driver is reduced and the use convenience is improved.