 |
Electro-Hydraulic Servo Valve |
The flow of fluid to the actuator is controlled by an electro-hydraulic servo valve, which is electrically powered. The device operates on a closed-loop mechanism that allows for exact control of the output. The demand for electro-hydraulic servo valves is predicted to rise in a variety of industries, including aerospace, steel, power, chemical, and other industries that require precision fluid flow control.
An electro-hydraulic servo valve (EHSV) is an electronically controlled valve that regulates the flow of hydraulic fluid to an actuator. Servo valves are frequently employed to control large hydraulic cylinders with a little electrical signal. With appropriate post-movement damping qualities, servo valves can enable accurate control of position, velocity, pressure, and force.
During World War II, the electro-hydraulic servo valve made its debut. Due to the difficulty to quickly transform electrical impulses into hydraulic flows, Electro-Hydraulic Servo Valve in use throughout the 1940s was characterized by poor precision and lengthy response times. A solenoid was utilized to operate a first-stage spool, which then drove a revolving main stage in the initial two-stage servo valve. This was comparable to the servo valves used during World War II, which used a solenoid to drive a spool valve.
The deployment of permanent magnet torque motors as the first step of Electro Hydraulic Servo Valve development accelerated in the 1950s (as opposed to solenoids). As a result, response times were substantially improved, and the amount of electricity utilized to control the valves was reduced.
Types
One or more steps can be found in electro-hydraulic servo valves. A torque motor is used to directly position a spool valve in a single-stage servo valve. Because of the torque motor power needs, single-stage servo valves have limited flow capabilities and stability. Flapper, jet pipe, or deflector jet valves can be used as hydraulic amplifier first stages in two-stage servo valves to position a second-stage spool valve.
The deployment of permanent magnet torque motors as the first step of Electro Hydraulic Servo Valve development accelerated in the 1950s (as opposed to solenoids). As a result, response times were substantially improved, and the amount of electricity utilized to control the valves was reduced.
Types
One or more steps can be found in electro-hydraulic servo valves. A torque motor is used to directly position a spool valve in a single-stage servo valve. Because of the torque motor power needs, single-stage servo valves have limited flow capabilities and stability. Flapper, jet pipe, or deflector jet valves can be used as hydraulic amplifier first stages in two-stage servo valves to position a second-stage spool valve.
Comments
Post a Comment