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| Electro-Hydraulic servo valve |
An electro-hydraulic servo valve is an electrically-operated valve that controls how hydraulic fluid is sent to an actuator. These valves can provide precise control of position, pressure, velocity, and force with good post-movement damping characteristics. Unlike simple directional valves, they can maintain any position fully open in one direction or the other. A servo valve receives pressurized hydraulic fluid from a source and then transfers the fluid to a hydraulic cylinder in a closely controlled manner. The output is converted into an equivalent electrical signal by the transducer.
An electro-hydraulic servo valve is a hydraulic valve that is electrically operated. It controls the flow of hydraulic fluid and is commonly used to control powerful hydraulic cylinders. This type of hydraulic control device can be easily operated with an electrical signal. It is easy to use and is highly accurate. The system relies on an input signal to control the movement of a hydraulic actuator. It is a closed-loop device and requires a high degree of accuracy, which provides precise control over the output. It can be a three-way or four-way spool, and can be operated manually or through a programmable logic controller.
There is an increasing demand for electro-hydraulic servo valves in various end-use industries, such as chemical, power, steel, and aerospace, among others, which requires precise control of the fluid flow. A series of three- or four-way electro-hydraulic servo valves (EHSVs) that drive actuators or motors in closed-loop servo systems used to control position, velocity, and force in fuel systems, hydraulic systems, and engine control applications. The EHSV thus provides an efficient and reliable way to control fluid flow and mechanical motion in various locations on aircraft or engines.
Jet pipe electro-hydraulic servo valve and nozzle flapper servo valve are the two kinds of servo valves, which are widely adopted in the air-force and aviation industry. For instance, the U.S.-based company, Parker Hannifin Corp. offers SE05, SE10, and SE15 series two-stage, 4-way, nozzle flapper servo valves for a variety of end-use industries such as defense, lumber & wood, entertainment automation, power generation, factory automation, miscellaneous industrial, and miscellaneous manufacturing, among others.
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