Electro-hydraulic servo valves are an important component in hydraulic systems, playing a key role in the control of hydraulic systems and are the key components for realizing precise control in hydraulic systems. Electro-hydraulic servo valves mainly control hydraulic systems through electrical signals, achieving precise adjustment of parameters such as pressure, flow rate, and speed, and are widely used in many fields such as aerospace, automobile manufacturing, precision machinery processing, medical equipment, and industrial automation.
Electro-hydraulic servo valves are mainly divided into three categories: single-electro-control servo valves, dual-electro-control servo valves, and multi-electro-control servo valves.
Single-electro-control servo valve: This type of servo valve controls the position of the valve core through a single electro-control signal, thereby controlling the flow direction and flow rate of the fluid. It has a simple structure and low cost, suitable for some situations that do not require high precision. However, due to its single control method, the control accuracy and stability of single-electro-control servo valves are difficult to meet the requirements in complex working environments.
Dual-electro-control servo valve: This type of servo valve controls the position of the valve core through two electro-control signals, enabling more precise control. It is usually used in situations that require precise control of flow and pressure, such as the motion control of hydraulic cylinders. The control accuracy and stability of dual-electro-control servo valves are higher than those of single-electro-control servo valves, but their structure is relatively complex, and the cost is relatively higher.
Multi-electro-control servo valve: This type of servo valve controls the position of the valve core through multiple electro-control signals, enabling more complex control. It is usually used in situations that require precise control of multiple parameters, such as high-precision control in precision machinery processing. The control accuracy and stability of multi-electro-control servo valves are very high, but their structure is more complex, and the cost is relatively higher.
The application of electro-hydraulic servo valves is very extensive. In the field of aerospace, electro-hydraulic servo valves can be used to control the attitude and position of aircraft, realizing precise flight control. In the field of automobile manufacturing, electro-hydraulic servo valves can be used to control the braking system and suspension system of vehicles, improving the safety and comfort of vehicles. In the field of precision machinery processing, electro-hydraulic servo valves can be used to control the feed speed and pressure of machine tools, realizing high-precision processing. In the medical equipment field, electro-hydraulic servo valves can be used to control the movement and pressure of medical equipment, ensuring the normal operation of medical equipment. In the field of industrial automation, electro-hydraulic servo valves can be used to control the movement and pressure of various machinery equipment, improving production efficiency and product quality.
In general, electro-hydraulic servo valves are an indispensable key component in hydraulic systems, and their classification and application are of great significance for the design and manufacturing of hydraulic systems. With the development of technology, the performance and application fields of electro-hydraulic servo valves will be further improved and expanded.