无人机气液压弹射系统性能分析

发布时间：2019-03-20 07:11

【摘要】：无人机气液压弹射起飞方式是20世纪90年代国际上发展起来的一种先进的导轨动能弹射起飞方式。作为无人机不可分割的一部分——无人机弹射设备,其承担着至关重要的作用,相当于无人机的双脚。面对巨大的市场需求和迫切的发展要求,有必要对无人机气液压弹射展开深入的研究。本文开展以下工作。(1)调研国内外无人机弹射技术的研究成果与现状,分析各种弹射装置的优缺点,确定本文研究对象为无人机气液压弹射系统。(2)设计无人机气液压弹射系统原理,满足弹射指标要求;设计整机机械布局与结构;完成无人机气液压弹射系统性能核算,验证设计方案正确性。(3)在AMESim气液压系统仿真平台上,完成弹射系统、减速系统模型搭建;在考虑元件物理模型与数学模型的前提下,搭建主要元件的详细模型;对以上模型就行仿真调试,验证模型正确性。(4)通过在AMESim中进行系统级别仿真,得到主要的参数曲线;对各参数权重进行分析,得到各物理参数对系统弹射的影响程度。(5)为了验证关键系统设计的合理性,在比例阀测试平台的基础上,建立一套等效无人机气液压弹射系统的试验装置,进行多项关键技术的原理性试验,并通过对蓄能器、比例减压阀、比例换向阀进行实验,验证所建模型的准确性,为后续无人机弹射虚拟仿真平台建设提供基础。
[Abstract]:UAV hydraulic ejection take-off mode is a kind of advanced kinetic energy ejector take-off mode developed in the 90's of 20 ~ (th) ~ (th) century. As an integral part of drones, drones eject equipment plays a vital role, equivalent to the feet of drones. In the face of huge market demand and urgent development requirement, it is necessary to carry out in-depth research on UAV hydraulic ejection. The following work is carried out in this paper. (1) the research results and present situation of UAV ejection technology at home and abroad are investigated, and the advantages and disadvantages of various ejection devices are analyzed. (2) Design the principle of UAV gas hydraulic ejection system to meet the requirement of ejection index; The mechanical layout and structure of the whole machine are designed, the performance accounting of UAV gas hydraulic ejection system is completed, and the correctness of the design scheme is verified. (3) on the simulation platform of AMESim gas hydraulic system, the ejection system and deceleration system model are built. On the premise of considering the physical and mathematical models of the components, the detailed models of the main components are built. The model is simulated and debugged to verify the correctness of the model. (4) the main parameter curves are obtained by system-level simulation in AMESim. The weight of each parameter is analyzed and the influence degree of the physical parameters on the ejection of the system is obtained. (5) in order to verify the rationality of the design of the key system, on the basis of the scale valve test platform, A set of test equipment of equivalent UAV gas hydraulic ejection system is set up, and several key technologies are tested in principle. The accuracy of the model is verified by experiments on accumulator, proportional pressure relief valve and proportional directional valve, and the accuracy of the model is verified by experiments on accumulator, proportional reducing valve and proportional reversing valve. It provides the foundation for the construction of the follow-up UAV ejection virtual simulation platform.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：V279

【相似文献】