双轮支柱式起落架刹车振动分析与减振优化  

Vibration analysis and vibration reduction optimization of dual-wheel strut landing gear brake

作　　者：蒋伟 张明[1,2] 胡晓航[1,2] 朱鑫 唐立明 JIANG Wei;ZHANG Ming;HU Xiaohang;ZHU Xin;TANG Liming(National Defense Fundamental Science Key Lab for Aircraft Advanced Design Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)

机构地区：[1]南京航空航天大学飞行器先进设计技术国防重点学科实验室,南京210016 [2]南京航空航天大学航空学院,南京210016

出　　处：《振动与冲击》2024年第5期328-337,共10页Journal of Vibration and Shock

摘　　要：以某型双轮支柱式起落架为研究对象,对飞机刹车诱导低频振动问题进行了研究,首先建立了完备的飞机着陆刹车滑跑整机六自由度数学模型,并在Simulnk中完成模型的搭建,用以分析了刹车控制律的部分参数对抖振的影响。其次,以轮轴中心航向加速度的RMS值作为振动量化指标,与结合系数效率一同设置为优化目标,基于NSGA-Ⅱ算法对液压刹车控制系统参数进行多目标优化设计,得到了优化变量的Parato最优前沿面和TOPSIS方法折衷最优解。最后,根据得到的优化设计方案对比分析优化前后的轮轴中心振动响应,并设置多组仿真工况检验了优化方案对不同着陆环境的适应性。结果显示优化后的起落架轮轴中心加速度Rms值最大降幅能达到14.53%,结合系数效率最大增幅为3.65%,表明所提出的起落架减振优化设计方法具有良好的实现性。Here,taking a certain type of dual-wheel strut landing gear as the study object,the problem of low-frequency vibration induced by aircraft brake was studied.Firstly,a 6-DOF mathematical model for complete aircraft landing brake and taxiing machine was established,and the model was built in the software Simulink to analyze effects of some parameters of brake control law on buffeting.Secondly,taking RMS value of heading acceleration at wheel axle center as the vibration quantification index and setting it and binding coefficient efficiency as optimization objectives,multi-objective optimization design for hydraulic brake control system parameters was performed based on NSGA-II algorithm to obtain Parato optimal front surface of optimization variables and TOPSIS method compromise optimal solution.Finally,based on the obtained optimization design scheme,vibration responses of wheel axle center before and after optimization were analyzed contrastively,and several groups of simulation working conditions were set up to test the adaptability of optimization scheme to different landing environments.The results showed that the optimized landing gear wheel axle center acceleration’s RMS value decreases by up to 14.53%,and binding coefficient efficiency increases by up to 3.65%,so the proposed landing gear vibration reduction optimization design method has good feasibility.

关 键 词：飞机刹车系统 起落架抖振 多目标遗传优化 数学模型 刹车诱导振动 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3