A20B-2001-0620 Drive amplifier panel

Servo drive

What is servo drive? Servo Drive (English: Active Drive), also known as servo drive, refers to the control torque obtained by multiplying the rotation torque of the output shaft of the motor with the rotation speed of the motor to control the rotation direction of the motor, so as to control the speed and rotation Angle of the output shaft. Servo controller, also known as driver, is used to control and detect the movement of each moving part of the machine tool. Servo control systems can be divided into the following three categories: (1) traditional control systems (also known as traditional machine tools) (2) CNC machine tools (also known as robotic arms, industrial robots or automation equipment) (3) robots

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Xiamen Xiongba Electronic Commerce Co. LTD

FROM：Mr. Wei

E-Mail：2322181769@qq.com

TEL/WeChat:15396237607

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1. Overview

Because of the high price of traditional servo control systems and the limitation of production scale, they have been eliminated in many fields. Therefore, in order to achieve higher production efficiency and productivity, servo control system needs to develop new products with lower cost, higher reliability and more competitiveness. For example, the servo drive system used to accurately control the tool path or measure the speed and angular velocity of the moving parts of the machine tool during the machining process (which is not possible with traditional servo systems); It is used to control the movement of each moving part of the machine tool or measure the Angle and speed of the machine tool (which can not be realized by the traditional servo system). At present, the industrial automation field mainly uses the following types:

2. Basic principles

Because the output shaft of the servo drive system is fixed in the working process, it cannot be directly controlled by mechanical displacement, but must be realized by the control signal of the servo drive system. According to the actual demand, the servo drive system can be divided into fixed shaft system and movable shaft system. In the fixed shaft system, the servo driver is mainly composed of motor, generator, brush and other components. Unlike mechanical displacement systems, servo drivers are primarily used to drive moving parts rather than mechanical parts. In a movable shaft system, it usually consists of one or more motors, a reducer or brake, a clutch and a brake (including springs and brake liners), etc.

3. Classification of servo drivers

According to the different driving mode, the servo drive can be divided into AC servo drive and DC servo drive. Dc drive generally has the function of output feedback, speed feedback and position feedback. Ac servo drive has the characteristics of high efficiency, high precision and high reliability, but it also has the disadvantages of small load capacity and complex structure.

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4. Selection of working characteristic parameters

The working characteristic parameters of servo drive system generally include: speed, position, torque and torque. Different types of servo systems have their own operating characteristic parameters, the selection of which mainly depends on the application situation, according to the specific requirements to choose the appropriate operating characteristic parameters.

5. Development trend

1) In terms of system performance, higher response speed and smaller size mean that the servo driver used with the machine tool can provide more functions for the operator, thus achieving better interaction between "man" and "machine"; 2) The servo drive can be matched with the motion control system, servo system or CNC machine tool installed on the machine tool. 3) For complex mechanical systems with complex moving parts, high response speed and high precision performance means fast positioning and high precision, which makes servo drivers the best choice to achieve this goal. 4) With the advent of Industry 4.0 and the era of intelligent manufacturing, servo drive technology and control means are also changing, such as flexible manufacturing, adaptive control, digital drive and so on are developing rapidly. 5) Higher and higher requirements are put forward for servo drivers and controllers

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