Parameter effects on high-speed UAV ground directional stability using bifurcation analysis

作     者：Qiaozhi YIN Xiaohui WEI Hong NIE Jian DENG Qiaozhi YIN;Xiaohui WEI;Hong NIE;Jian DENG

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.