The electric servo system of industrial robots is a key component, which is responsible for accurately controlling the movement of industrial robots. The following is a detailed analysis of the electric servo system of industrial robots:
1. System composition
The electric servo system of industrial robots is mainly composed of three parts: servo motor, servo drive and controller:
Servo motor: As an actuator, it is the power source of the system, which converts electrical energy into mechanical energy to drive the industrial robot to perform various movements.
Servo motors are required to have characteristics such as fast responsiveness, high starting torque inertia ratio, continuity and linearity of control characteristics to meet the high-precision, high-speed and high-frequency movement requirements of industrial robots.
Servo drive: It is the power supply of the servo motor, responsible for receiving the instructions of the controller and accurately controlling the servo motor. The servo drive controls the servo motor in three ways: position, speed and torque, to achieve high-precision transmission system positioning.
Controller: Responsible for decoding motion control commands, relative movement between each position control axis, acceleration and deceleration contour control, etc., to reduce the path error of the overall system motion control.
The controller is usually a computer or PID (proportional, integral and differential) control circuit, which transforms and processes the deviation signal of the comparison link to control the actuator to act as required.
2. Working principle
The working principle of the servo system is based on feedback control, that is, the output of the actuator is adjusted by the deviation signal of the comparison link, so that the output quantity quickly and accurately reproduces the change of the given quantity.
Specifically, the servo system detects the position, speed and other status information of the servo motor in real time through an encoder or other sensor, and feeds this information back to the controller.
The controller adjusts the output of the servo drive according to the deviation between the feedback information and the given instruction, thereby controlling the movement of the servo motor.
3. Features and advantages
High-precision control: The servo system can achieve small and accurate position adjustment to meet the high precision requirements of industrial robots.
Fast response: The servo motor has the characteristics of fast response, can quickly adapt to the changing working environment, and achieve precise position adjustment.
High reliability: The servo system adopts high-quality materials and structural design, with built-in overload protection and fault detection functions to ensure the stable operation of the system.
Good flexibility: The servo system can be adjusted and customized according to different application requirements to adapt to a variety of motion modes and control methods.
IV. Application and Development
Industrial robot electric servo systems are widely used in various industrial automation fields, such as automobile manufacturing, electronic manufacturing, food processing, etc. With the development of intelligent manufacturing and industrial automation, the market demand for servo systems continues to grow.
At the same time, with the improvement of the research and development level of domestic servo technology, the pace of import substitution of domestic servo systems is also accelerating. In the future, servo systems will play a more important role in the industrial robot industry and promote the further development of industrial automation and intelligent manufacturing.
V. Technology Trends
Intelligence and Digitalization: With the continuous development of technologies such as industrial Internet and artificial intelligence, the intelligence and digitalization of servo systems will become an important development direction.
High precision and high speed: In order to meet the continuous pursuit of precision and speed by industrial robots, servo systems will continue to develop in the direction of high precision and high speed.
Modularization and integration: In order to simplify system design, reduce manufacturing costs and improve maintenance efficiency, servo systems will gradually develop in the direction of modularization and integration.
In summary, industrial robot electric servo systems are one of the key technologies for industrial robots to achieve high-precision, high-speed and high-frequency motion.
With the continuous advancement of technology and the continuous expansion of application fields, servo systems will play a more important role in industrial automation and intelligent manufacturing.