Global trade intelligence for banking

List of contents of this article:

• 1,Global trade intelligence for banking What are the control methods of servo??
• 2, How does the servo driver control the servo motor? I hope to explain in an easy-to-understand sentence
• 3, What is the difference between servo driver and frequency converter

What are the control methods of servo??

Control method of servo motor: torque control: torque control method is through the input of external analog quantity or directThe assignment of the connected address is used to set the size of the external output torque of the motor shaft. For example, if 10V corresponds to 5Nm, when the external analog volume is set to 5V, the output of the motor shaft is 5Nm.

There are three control methods for the servo motor system, namely torque control, speed control and position control. First, the pitch control is to set the size of the external output torque of the motor shaft through the input of the external analog quantity or the assignment of the direct address. The speed control controls the rotation speed through the input of the analog quantity or the frequency of the pulse.

General servo motors have three control methods: speed control, torque control and position control. Speed control and torque control are both controlled by analog quantity. Position control is controlled by sending pulses. The specific control method should be selected according to the customer's requirements to meet the movement function.

The most common control method of servo motor is speed control mode, such as the ambient light on the stage. By controlling the different speeds of the motor, the back and forth change of light is realized. The most accurate is the position mode, such as the robotic arm for assembling the vehicle. If the accuracy is not enough, accurate installation cannot be achieved.

Position control: The position control mode generally determines the size of the rotation speed through the frequency of the external input pulse, and determines the angle of rotation through the number of pulses. Some servos can directly assign values to the speed and displacement through communication.

How does the servo driver control the servo motor? I hope to explain in an easy-to-understand sentence

The three methods of private server motor driver to control the servo motor: speed control mode, torque control mode, and position control mode. By controlling the servo motor, the robotic arm of a robot or spacecraft can be made. The servo motor is controlled by the controller, and the coding inside the controller is written by the engineer.

Control loop: At present, the control unit of mainstream servo drivers adopts digital signal processor (DSP) as the control core.It can realize relatively complex control algorithms, and realize digitalization, networking and intelligence.

Three control modes of servo drive: position control, torque control and speed mode.

The servo motor is controlled by the driver, and the driver controls the speed and torque of the motor by adjusting the input voltage or current of the motor. The drive will have an input port and an output port. The input port is connected to the signal line of the controller, while the output port is connected to the cable of the motor.

Regular inspection: Regularly inspect the servo motor, including the motor itself, driver, controller and other parts. The contents of the inspection include the operating status, temperature, noise, etc. of the motor, and whether the connection of each component is firm, whether it is loose or damaged, etc.

What is the difference between the servo driver and the frequency converter

The meaning itself is different: the driver is also known as "servo controller" and "servo amplifier", which is a controller used to control the servo motor. Its function is Similar to the frequency converter acting on ordinary AC motors, it is a part of the servo system and is mainly used in high-precision positioning systems.

Different functions Driver: the driver hardware that drives a certain type of device. Servo frequency converter: a controller used to control servo motors.

The serious difference in the motor is also the fundamental difference in performance between the two. Some frequency converters with excellent performance can directly drive servo motors.

The overload capacity is different. Servo driveThe actuator generally has 3 times the overload capacity, which can be used to overcome the inertial moment of the inertial load at the start-up moment, while the frequency converter generally allows 5 times the overload. Control accuracy.