FBMSVH is the core part of DEH electro-hydraulic servo system which consists of electro-hydraulic servo valve and electro-hydraulic servo card. It receives the given valve position instruction from DEH and works according to the linear displacement difference. The electro-hydraulic servo system is an automatic mechanical control system which uses hydraulic power and electrical method to realize signal transmission and control. According to the different amount of machinery controlled by the system, it can be divided into electro-hydraulic position servo system, electro-hydraulic speed servo control system and electro-hydraulic control system. China's electro-hydraulic servo development level is still in a stage of development, although in the conventional electro-hydraulic servo control technology, we have a certain development, but to develop the domestic electro-hydraulic servo technology must be synchronized from the mechanical, hydraulic, automatic control and computer and other technical fields.
The advantages and disadvantages of the FBMSVH electro-hydraulic servo system are as follows:
Advantages:
High precision: electro-hydraulic servo system through high-precision sensors and controllers, can achieve high-precision position, speed and force control, with fast response speed, high control accuracy.
Strong load capacity: the electro-hydraulic servo system can withstand a large load, with the advantages of large load stiffness, suitable for applications requiring high power output.
Fast response speed: The response speed of the electro-hydraulic servo system is very fast, and it can respond quickly to the instructions in a short time, which is suitable for occasions that require a fast response.
Large power to mass ratio: The power to mass ratio of the electro-hydraulic servo system is large, and it can achieve larger output power with smaller volume and weight, which is suitable for space-limited occasions.
Cons:
Easy to leak: the sealing of the hydraulic system in the electro-hydraulic servo system needs to be ensured, and once it leaks, the performance of the system will be reduced, especially in some industrial fields, and the leakage will bring danger to the lives and property of workers.
High maintenance costs: The hydraulic components in the electro-hydraulic servo system need to be regularly maintained and replaced, which increases the maintenance cost of the system. Therefore, when choosing a hydraulic system, it is necessary to consider factors such as the service life and maintenance costs of the system.
Loud noise: Hydraulic pumps and pneumatic actuators of electro-hydraulic servo systems can produce loud noise, which can cause problems similar to acoustic fatigue in some applications.
