南京航空航天大学学报2025，Vol.57Issue(2)：292-300,9.DOI:10.16356/j.1005-2615.2025.02.010
起落架舱门联动机构故障分析与优化设计
Fault Analysis and Optimization Design of Landing Gear Door Linkage Mechanism
摘要
Abstract
To solve the deformation problem of the linkage mechanism in the process of retracting and unwinding the linkage landing gear of the door,according to its motion characteristics,the kinematics and dynamics models of the linkage mechanism are established based on the D-H coordinate transformation method and the second type of Lagrange equation.The deformation of the connecting rod caused by the sudden change of the hinge moment of the mechanism is solved through numerical simulation.To solve the fault problem,firstly,the influence of the spatial installation position and rod length change of the linkage mechanism on the mechanical properties of the mechanism is analyzed,the key positions are found,an optimization model considering the attitude change is established according to the spatial position relationship of the hinge rotation axis,and the spatial position and attitude of the hinge are optimized by particle swarm optimization,the optimal installation point is found,and the results before and after optimization are compared.The results show that after optimization,the rotation speed of the hinge is abruptly reduced by 80.0%,the torque of the hinge is reduced by 74.8%,the movement of the mechanism is more stable,and the deformation is avoided.关键词
起落架舱门联动机构/故障分析/运动学模型/拉格朗日方程/粒子群优化Key words
landing gear door linkage/fault analysis/kinematic model/Lagrange equation/particle swarm optimization(PSO)分类
机械制造引用本文复制引用
史栩瑞,张健,梁涛涛,印寅,魏小辉,聂宏..起落架舱门联动机构故障分析与优化设计[J].南京航空航天大学学报,2025,57(2):292-300,9.基金项目
国家自然科学基金(52172368,52302453,52275114) （52172368,52302453,52275114）
江苏省自然科学基金(BK20220135) （BK20220135）
航空航天结构力学及控制全国重点实验室(南京航空航天大学)自主研究课题(MCAS-I-0224G03) （南京航空航天大学）
南京航空航天大学前瞻布局科研专项资金(1001-ILB23008). （1001-ILB23008）
