版权所有:内蒙古大学图书馆 技术提供:维普资讯• 智图
内蒙古自治区呼和浩特市赛罕区大学西街235号 邮编: 010021
作者机构:State Key Laboratory of Mechanics and Control of Mechanical StructuresNanjing University of Aeronautics and AstronauticsNanjing 210016China Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight VehicleNanjing University of Aeronautics and AstronauticsNanjing 210016China MIIT Key Laboratory of Multifunctional Lightweight Materials and StructuresNanjing University of Aeronautics and AstronauticsNanjing 210016China
出 版 物:《Chinese Journal of Aeronautics》 (中国航空学报(英文版))
年 卷 期:2021年第34卷第11期
页 面:1-14页
核心收录:
学科分类:08[工学] 082503[工学-航空宇航制造工程] 0825[工学-航空宇航科学与技术]
基 金:supported by the National Natural Science Foundation of China(Nos.51905264 and 12002157) the China Postdoctoral Science Foundation Funded Project,China(Nos.2019M650115,2019M661818 and 2020T130298) the Science&Technology Innovation Project for Overseas Scholars in Nanjing,China(No.YQR20046) the National Defense Outstanding Youth Science Foundation,China(No.2018-JCJQ-ZQ-053) the Fundamental Research Funds for the Central Universities,China(No.NF2018001) the Priority Academic Program Development of Jiangsu Higher Education Institutions,China
主 题:Bifurcation analysis Ground directional stability High-speed UAV Nonlinear system Numerical continuation
摘 要:A loss of ground directional stability can trigger a high-speed Unmanned Aerial Vehicle(UAV)to veer off the *** order to investigate the combined effects of the key structural and operational parameters on the UAV ground directional stability from a global perspective,a fully parameterized mathematical high-speed UAV ground nonlinear dynamic model is developed considering several nonlinear *** bifurcation analysis procedure of a UAV ground steering system is introduced,following which the simulation efficiency is greatly improved comparing with the time-domain simulation *** the numerical continuation method is employed to investigate the influence of the nose wheel steering angle and the global stability region is *** bifurcation parameter plane is divided into several parts with different stability properties by the saddle nodes and the Hopf bifurcation *** find that the UAV motion states will never cross the bifurcation curve in the nonlinear ***,the dual-parameter bifurcation analyses are presented to give a complete description of the possible steering *** is also found that BT bifurcation appears when the UAV initial rectilinear velocity and the tire frictional coefficient *** addition,results indicate that the influence of tire frictional coefficient has an opposite trend to the influence of initial rectilinear ***,using bifurcation analysis method to identify the parameter regions of a UAV nonlinear ground dynamic system helps to improve the development efficiency and quality during UAV designing phase.