双轮支柱式起落架刹车振动分析与减振优化

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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。

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	蒋伟1
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	张明1
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	胡晓航1
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	朱鑫1
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	唐立明1
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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

Abstract：In this paper, a two-wheel strut landing gear was taken as the research object to study the low-frequency vibration induced by aircraft brakes. Firstly, a complete six-degree-of-freedom mathematical model of aircraft landing brake skid was established, and the model was built in Simulnk to analyze the influence of some parameters of brake con-trol law on chattering. Secondly, the Rms value of the center course acceleration of the axle was taken as the vibra-tion quantization index, and the combination coefficient efficiency was set as the optimization objective. The multi-objective optimization design of the hydraulic brake control system parameters was carried out based on the NSGA-Ⅱ algorithm, and the optimal solution of the Parato optimal front surface and the TOPSIS compromise of the optimi-zation variables was obtained. Finally, the vibration responses of axle center before and after optimization were compared according to the optimized design scheme, and the adaptability of the optimized scheme to different land-ing environments was tested by setting several groups of simulation conditions. The results show that the maximum reduction of the landing gear axle center acceleration Rms value after optimization can reach 14.53%, and the max-imum increase of the binding coefficient efficiency is 3.65%, which indicates that the proposed landing gear vibra-tion reduction optimization design method has good feasibility.

Key words： Aircraft brake system Landing gear buffeting Multi-objective genetic optimization Mathematical model Brake in-duced vibration

收稿日期: 2023-04-06 出版日期: 2024-03-15

引用本文:

蒋伟1，2，张明1，2，胡晓航1，2，朱鑫1，2，唐立明1，2. 双轮支柱式起落架刹车振动分析与减振优化[J]. 振动与冲击, 2024, 43(5): 328-337.
JIANG Wei1,2,ZHANG Ming1,2,HU Xiaohang1,2,ZHU Xin1,2,TANG Liming1,2. Vibration analysis and vibration reduction optimization of dual-wheel strut landing gear brake. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(5): 328-337.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2024/V43/I5/328

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