What is the working principle of the hydraulic servo fatigue testing machine?

The working principle of the hydraulic servo fatigue testing machine is based on the hydraulic servo system, which controls the output of the hydraulic pump through electrical signals, so that the actuator can be unloaded according to the preset load curve, so as to realize the fatigue test of the material. Its basic components include hydraulic system, electrical control system, mechanical transmission system and test system. During the test, according to the test requirements, the electrical control system will generate corresponding electrical signals to control the work of the hydraulic pump.The hydraulic pump in the hydraulic system converts electrical energy into hydraulic energy and drives the actuator to move. The mechanical transmission system converts the movement of the actuator into the movement of the sample, thus realizing the fatigue test. At the same time, the test system will monitor the response of the sample in real time and feedback the data to the electrical control system to form a closed-loop control. In general, the hydraulic servo fatigue testing machine uses the hydraulic servo system to realize high-precision and high-stability fatigue testing of materials, which is an efficient and reliable testing equipment.