One minute to take you to understand the current situation of China’s servo motor industry
The servo system, also known as the follower system, is used to accurately follow or reproduce a certain process feedback control system. The servo system is an automatic control system that enables the output of the controlled quantity of the object to follow the arbitrary change of the input target (or given value).
The main task is to amplify, convert and control the power according to the requirements of the control command, so that the torque, speed and position control of the output of the drive device are very flexible and convenient.
In many cases, the servo system refers to the feedback control system in which the controlled quantity (the output of the system) is the only mechanical or displacement velocity and acceleration, and its function is to make the output mechanical displacement (or rotation angle) accurately track the input displacement (or rotation angle), and its structural composition is not different from other forms of feedback control system in principle.
Introduction to the common classification methods of servo systems in China’s servo motor industry
At present, there are three classification methods of servo system, which are classified according to the power of the system, the hydraulic components and the control principle.
(1) According to the power system, it can be divided into small servo, medium servo and large servo system. The large servo system makes the power of the bear more than 5KW, which is mainly used to drive heavy machinery and equipment, the medium servo means that the power is between 1KW and 5KW, and is widely used in the OEM market, and the small servo means that the system power is less than 1KW, which is mainly used in the low-end OEM market.
| POWER | MAIN APPLICATION | |
| Small servo | ＜1KW | Small machinery: electronic assembly, small machine tools, small packaging machinery, printing machines, engraving machines, etc |
| Medium servo | 1KW-5KW | Medium-sized machinery: milling machines, injection molding machines, pillow packaging machines, drilling machines, etc |
| Large servo | ＞5KW | Large-scale machinery: large-scale milling machines, large-scale CNC machine tools, large-scale injection molding machines, wind turbines, etc |
(2) According to the hydraulic components, the servo system can be divided into hydraulic servo system, electrical servo system and pneumatic servo system.
(3) According to the classification of control principle, the servo system can be divided into open-loop control servo system, closed-loop control servo system and semi-closed-loop control servo system.
The core of industrial automation in the application field of China’s servo motor industry
The advantages of servo motor system in terms of accuracy, moment frequency, overload and other performance, where the control accuracy of position, speed and torque is relatively high, AC servo motor can be used.
For example, it has been widely used in CNC machine tools, electronic manufacturing equipment, packaging machinery, textile machinery, robots, plastic machinery, medical machinery, food machinery and other fields.
At the same time, the promotion of intelligent manufacturing is the rapid growth of the application scale of servo motors in emerging industries, and the overall market size has a large growth space.
Servo motor is the power system of the robot and the “heart” of the robot movement, which occupies an important position in the national strategic industry.
Servo motors in each joint of the industrial robot are used to drive the movement, providing precise angles to the industrial robot arm.
Servo motors for robots require fast bus communication between the driver and the servo, high precision of the servo, and processing requirements for basic materials.
The servo motor must have high reliability and stability, be able to withstand harsh operating conditions, be able to carry out very frequent forward and reverse and acceleration and deceleration operations, and be able to withstand overload in a short time.
China’s servo motor industry chain products have high added value and are widely used in the downstream
The upstream of the servo motor industry is mainly a supplier of other materials such as raw materials and parts. Due to the working principle of servo motors, its servo motor magnets are important raw materials necessary in its manufacturing process.
The midstream is the servo system manufacturing, and the servo motor manufacturing is part of the entire servo system, in addition to the servo motor manufacturing, the servo system also includes the servo drive manufacturing and the CNC system research and development.
Downstream applications, servo motors can be widely used in robot manufacturing, CNC machine tools, wind power equipment, new energy vehicles, 3C, medical equipment and elevators and other fields, with a wide range of market application prospects.