摘要
飞机液压管路振动过大是一个亟待解决的问题，考虑了主动消振方式较为复杂，难以在飞机液压系统实现，提出了基于系统特征阻抗，通过优化卡箍布局的被动消振方式。首先建立系统管道及各元件数学模型，利用传递矩阵法（Transfer Matrix Method, TMM）得到其频域特征阻抗变化规律。以激振源固有频率点的特征阻抗加权和为目标函数，利用粒子群优化算法（Particle Swarm Optimization, PSO）在一定范围内调整卡箍位置，使在激振源频率点的特征阻抗加权和降到最低。通过优化卡箍位置，系统特征阻抗加权和较优化前衰减28.13%，验证了其有效性，为飞机液压管路的优化布局提供了一定的理论依据。
Abstract
The excessive vibration of hydraulic pipelines causes safety concern in aircraft and requires immediate response. The active vibration elimination is a complicated method and difficult to implement in aircraft hydraulic system. In this work, a new method of passive vibration elimination which optimized the clamps layout based on system characteristic impedance was presented. Firstly, the models of pipes and components were established, and based on Transfer Matrix Method (TMM), the law of characteristic impedance in frequency domain was obtained. The weighted sum of characteristic impedance in natural frequencies of vibration source was set as objective function. The locations of clamps were optimized by Particle Swarm Optimization (PSO) algorithm to make objective function take minimum value. Through the optimization of clamps layout, the characteristic impedance of the whole system was reduced by 28.13%. Finally simulation results showed that the proposed optimization method was effective and thus this work provided some theoretical basis for the optimization of the hydraulic pipe system.
关键词
管路振动 /
传递矩阵法 /
特征阻抗 /
粒子群算法 /
卡箍 /
优化布局
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Key words
pipe vibration /
TMM /
characteristic impedance /
PSO /
clamp /
optimized layout
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李 鑫; 王少萍.
基于卡箍优化布局的飞机液压管路减振分析[J]. 振动与冲击, 2013, 32(1): 14-20
Li Xin Wang Shaoping.
Analysis of vibration control on hydraulic pipelines in aircraft based on optimized clamps layout[J]. Journal of Vibration and Shock, 2013, 32(1): 14-20
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脚注
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