Main accessories of electro-hydraulic servo system
Release time:
2020-09-19 12:03
Source:
At present, China's electro-hydraulic servo system development level is still in the development stage, although in the traditional electro-hydraulic defect control technology, we have a certain degree of development. However, in the high-end products and application technology of electro-hydraulic servo system, there are still many gaps between China and foreign countries, and there is still a big gap between the technical level of developed countries and foreign countries.
Electro-hydraulic servo technology is a comprehensive technology that integrates mechanical, hydraulic and automatic control. The development of electro-hydraulic servo technology in China must be promoted simultaneously from the fields of machinery, automatic control and computer technology. WithThe development of DSP control system and high-speed control system. Under certain circumstances, the digital measurement and control system has become the development direction of the future measurement and control system.
The full digital measurement and control system of dynamic electro-hydraulic servo system also has a new breakthrough in software and digital control theory. Only in this way can we meet the requirements of fast response, precise control, stability and reliability. Also required in the traditionalOn the basis of PID control, it also has auxiliary control characteristics such as feed-forward control, frequency reverse compensation control, amplitude control, and differential pressure.
Therefore, the digital controller has a wealth of computing functions, which is incomparable to the analog control system. At present, China's mature technology of electric servo system has not yet entered the industrialization stage, there is a development and research process. Multi-degree-of-freedom coordination technology is the key technology in the development of simulation test technology.
Under certain conditions, only by mastering multi-channel control technology, China's electro-hydraulic servo technology can move to a higher level and narrow the gap with foreign counterparts. To achieve this goal, we need to continue to work hard, need a group of high-quality technical team, from the numerical control theory and practice to promote. Strive for bigger and stronger, the overall level of domestic hydraulic parts is still relatively backward.
The electric servo system mainly adopts a rubber seal structure, which is prone to aging and leakage, large in size and low in integration. With the maturity of mechanical precision processing technology, tapered sealing method is gradually adopted, which has simple structure and reliable sealing performance. In the future, the improvement of the structure of domestic hydraulic components still needs to work hard on technology, and a systematic improvement process is needed.
As a key component of electro-hydraulic conversion,"Electro-hydraulic servo reading" is the key link of future electro-hydraulic servo control technology improvement. In the future, it is necessary to strengthen the cooperation with KLM manufacturing enterprises to jointly develop servo valve products suitable for testing machine applications, and the development and application of computer technology promotes the progress of electro-hydraulic servo technology, which makes the electro-hydraulic servo system widely used in the field of dynamic simulation and simulation test.
The application and development of computer multi-degree-of-freedom coordinated control have further improved the performance of the road simulation test system and promoted the wide application of the electro-hydraulic servo system. In this case, it can be said. The development of electro-hydraulic servo technology is inseparable from the development of computer technology.
Electro-hydraulic servo system
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