Design and efficiency analysis for loading actuator used in aircraft structure test

Based on the characteristics of low speed and low system flow in plane structure test especially in the static loading test, a new type of valve-control electro-hydraulic actuator for aircraft structure loading test was designed. The system components and working principle was described, and the efficiency of valve-control system was analyzed. A scheme of reducing the oil source pressure setting was proposed in order to improve the system efficiency, while modeling and simulation work of the electro-hydraulic actuator system was completed through the AMESim platform, and the effectiveness of proposed scheme in improving the system efficiency was proved. The simulation results demonstrate that the designed electro-hydraulic actuator can totally meet the expected design requirements, and can be widely used in aircraft structural loading test system.