The key technology is subject to the domestic servo system will be difficult?
Release time:
2019-06-27 14:29
Source:
Servo system is an important part of industrial automation, and it is a necessary way to achieve precise positioning and precise movement in the automation industry. The breakthrough of the key technology of servo system will greatly enhance the technical level and market competitiveness of China's intelligent manufacturing.
Servo system (servomechanism), also known as servo system, is a feedback control system used to accurately follow or reproduce a process. Its main task is to amplify, transform and regulate the power according to the requirements of the control command, so that the torque, speed and position control of the drive device output is very flexible and convenient.
Looking back on the development of servo systems, from the earliest hydraulic and pneumatic to today's electrification, the servo system composed of servo motors, feedback devices and controllers has gone through nearly 50 years.
With the progress of technology and the continuous development of industrialization, coupled with the high-precision, high-speed, miniaturization, high reliability, maintenance-free performance and multi-species small batch and other aspects of the continuous improvement of the requirements of industrial automation equipment, to promote servo drive technology is widely used in the industrial field.
Nowadays, with the advancement of microelectronics, power semiconductors and motor manufacturing technology, high-performance servo systems are widely used in high-tech fields such as laser processing, robots, CNC lathes, large-scale integrated circuit manufacturing, office automation equipment, and radar.
Among them, AC servo motor technology, with its excellent cost performance, has gradually replaced the DC motor as the dominant executive motor of the servo system. The maturity of AC servo system technology also makes the market show rapid and diversified development, and become one of the supporting technologies of industrial automation.
Looking at the development process of servo system in China, it can be roughly divided into three stages: the first stage is the 70-year period, and servo system is first applied to high-end manufacturing industries such as national defense science and technology and military industry; The second stage is after the 1980 s, servo systems began to be tried in some high-end civilian manufacturing. After 2000, with the improvement of strategies such as manufacturing power, the level of China's manufacturing industry has been greatly improved, servo systems are widely used in China's high-end manufacturing industry, but almost all foreign servo systems are used.
According to incomplete statistics, the current market share of foreign servo companies in China is 75%, of which Japanese brands account for 50% and European and American brands account for 25%. Among them, Japanese brands include Panasonic, Mitsubishi Electric, Yaskawa, Sanyo, Fuji, etc. The United States is famous for Rockwell, Danaher and Paguang, while Germany has Siemens, Lentz, Bosch Rexroth, Schneider and other brands.
Comparatively speaking, domestic brands only occupy 20% of the domestic market, of which mainland brands and Taiwan brands occupy 10% of the market respectively. Taiwan, China, is represented by Dongyuan and Delta, and its technical level and price level are between imported mid-end products and mainland brands. Brands in mainland China mainly include Hunan Aotong Intelligence, Huazhong Numerical Control, Guangzhou Numerical Control, Eston, Huichuan Technology, Inventive, etc.
As an important part of industrial automation, servo system is a necessary way to achieve precise positioning and precise movement in the automation industry. Therefore, improving the level of domestic servo system has become one of the main directions in the industry.
With the emergence of upgrading and manufacturing transformation accelerated, as well as favorable policies and rapid increase in market demand and other factors, the electronic equipment manufacturing industry and the robot industry itself and the demand for servo rapid growth, which undoubtedly promoted the expansion of the domestic servo system market.
At the same time, many downstream industries of servo system are in line with the development direction encouraged by the national industrial policy. With the overall industrial upgrading of China's equipment manufacturing industry, the development direction of automation, numerical control and intelligence provides a very broad market space for servo system products.
Under the combined effect of various favorable factors, the research and development level of domestic servo technology will continue to improve, and the pace of import substitution of domestic servo system will be accelerated. The breakthrough of the key technology of servo system will greatly enhance the technical level and market competitiveness of China's intelligent manufacturing.
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