Hydraulic Test Actuators are designed for use in demanding applications where the requirement for precise loading is paramount. Predominantly used in Durability, Fatigue and Static testing in aerospace ,automotive and all other industries. The Actuators come in all shapes and sizes and here at the ASTC we have a range that can apply loads as small as 60 kN through to 2000 kN. ( equivalent to 154 Ford Focus’s stacked on top of each other).Actuators are rated at either 280 bar or 210 bar working pressures and are controlled by the use of a servo valve that is driven by a specialist controller and software. When used in conjunction with a servo valve they enable complex loading sequences to be implemented with great accuracy.
An *electrohydraulic servo valve (EHSV) is an electrically operated valve that controls how hydraulic fluid is ported to an actuator. Servo valves and servo-proportional valves are operated by transforming a changing analogue or digital input signal into a smooth set of movements in a hydraulic cylinder. Servo valves can provide precise control of position, velocity, pressure and force.
*Thanks to Wikipedia