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以液压马达驱动的无人机液压弹射系统为研究对象,给出了无人机弹射起飞和弹射后小车缓冲制动减速的工作原理。基于AMESim分别建立了无人机弹射起飞和小车缓冲制动减速仿真模型,分析了蓄能器最高蓄能压力、蓄能器体积、卷筒半径、插装阀通径、双向马达排量对无人机弹射起飞速度及位移的影响规律。研究了缓冲溢流阀开启压力对小车制动过程速度、位移和液压马达缓冲腔压力的影响规律,为无人机液压弹射系统的设计与优化提供指导。
Taking the hydraulic motor-driven UAV hydraulic ejection system as the research object, the working principle of the unmanned aerial vehicle (UAV) taking off and catapulting the vehicle’s buffer braking and deceleration is given. Based on AMESim, a simulation model of unmanned aerial vehicle launching and vehicle deceleration braking was established respectively. The maximum accumulator pressure, accumulator volume, drum radius, cartridge valve diameter and displacement of bidirectional motor were analyzed. Influence of Man-machine Ejection Takeoff Speed and Displacement. The influence of buffer relief valve opening pressure on the speed, displacement and pressure in the buffer chamber of the hydraulic motor was studied to provide guidance for the design and optimization of UAV hydraulic ejection system.