Simulation research on electro-hydrostatic landing-gear retracting and releasing system and braking system of UAV
The landing-gear retracting and releasing,and braking system of unmanned aerial vehicle(UAV)plays a crucial role in the process of takeoff,landing,and braking of UAVs.With the increasingly stringent flight condi-tions and requirements of UAV,traditional hydraulic systems can no longer meet the needs.According to the wor-king principle of the electro-hydrostatic actuator,an electro-hydrostatic system integrating the landing-gear retrac-ting and releasing,and braking functions of UAV is designed.The improved PID(proportion integration differentia-tion)control method is applied to the landing-gear retracting and releasing function,and two fuzzy PID control methods are designed to apply to the anti-skid braking function.On this basis,a co-simulation based on AMESim and MATLAB/Simulink is conducted to verify the system performance,and the simulation results are compared and analyzed.The results show that the fuzzy PID control method has good control effect and can effectively im-prove the stability of the landing gear retracting and releasing and braking process of UAV,which can make the landing-gear retracting and releasing safer and the braking efficiency higher.
UAVlanding-gear retracting and releasingbrakingco-simulationelectro-hydrostatic system
万方数据
维普
