1. driver: the driving hardware for driving a certain device.

2. Servo frequency converter: the controller used to control the servo motor.

Second, the way is different.

1. driver: in the whole control link, it is just in the middle of the main controller, driver and motor.

2. Servo frequency converter: the servo motor is controlled in three ways: position, speed and torque to realize high-precision positioning of the transmission system.

Third, the characteristics are different.

1. driver: its main function is to receive the signal from the main control box (NC card), then process the signal and transmit it to the motor and the sensors related to the motor, and feed back the working state of the motor to the main controller.

2. Servo frequency converter: At present, the closed-loop control algorithm of current, speed and position based on vector control is widely used in the design of AC servo driver. Whether the speed closed-loop design in this algorithm is reasonable or not plays a key role in the performance of the whole servo control system, especially the speed control.

Baidu Encyclopedia-Servo Drive

Baidu Encyclopedia-Drive