基于遗传算法的直升机旋翼液弹阻尼器模型参数识别

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振动与冲击 ›› 2015, Vol. 34 ›› Issue (10) : 213-218.

论文

武珅1,2，杨卫东2，李锐锐2

作者信息 +

Parameter identification for a fluid-elastomeric damper model of helicopter rotor based on genetic algorithm

WU Shen1,2，YANG Wei-dong2，LI Rui-rui2

Author information +

文章历史 +

摘要

建立直升机旋翼液弹阻尼器非线性动力学参数模型，引入具有全局搜索能力的遗传算法进行模型参数识别，解决因模型复杂造成的传统参数识别效率及精度较低问题。据识别所得参数模型重构力—位移迟滞回线并与液弹阻尼器动力学试验数据对比结果显示，参数模型重构曲线与试验曲线吻合良好，验证参数模型描述液弹阻尼器非线性动力学特性的准确性及采用遗传算法识别模型参数的有效性。对不同位移幅值与不同频率下液弹阻尼器动力学特性模拟计算均获得与试验一致结果，表明非线性参数模型及参数识别方法鲁棒良好性、精较高度。

Abstract

A nonlinear dynamic model with parameters for fluid-elastomeric damper of helicopter rotor is established. Genetic algorithm that possesses global search capability is introduced to identify the model parameters. It improves the efficiency and precision of conventional methods in parameter identification for complex models. The force-displacement curves calculated by parameter model are compared with those derived from experimental data. The consistent results suggest that the nonlinear model with parameters can validly describe the dynamic properties of fluid-elastomeric damper and genetic algorithm can effectively identify parameters of nonlinear fluid-elastomeric damper model. Under different displacement amplitude and frequency, the results from dynamic characteristic calculation of fluid-elastomeric damper are always accordant with experimental data, indicating that the proposal nonlinear model and parameter identification method both possess great robustness and high precision.

导出引用

武珅1,2，杨卫东2，李锐锐2. 基于遗传算法的直升机旋翼液弹阻尼器模型参数识别[J]. 振动与冲击, 2015, 34(10): 213-218

WU Shen1,2，YANG Wei-dong2，LI Rui-rui2. Parameter identification for a fluid-elastomeric damper model of helicopter rotor based on genetic algorithm[J]. Journal of Vibration and Shock, 2015, 34(10): 213-218

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