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基于逆虚拟激励法的导弹振动谱设计

吕卫民 肖阳 方登建

吕卫民, 肖阳, 方登建等 . 基于逆虚拟激励法的导弹振动谱设计[J]. 北京航空航天大学学报, 2017, 43(5): 872-879. doi: 10.13700/j.bh.1001-5965.2016.0335
引用本文: 吕卫民, 肖阳, 方登建等 . 基于逆虚拟激励法的导弹振动谱设计[J]. 北京航空航天大学学报, 2017, 43(5): 872-879. doi: 10.13700/j.bh.1001-5965.2016.0335
LYU Weimin, XIAO Yang, FANG Dengjianet al. Design of missile vibration spectrum based on inverse pseudo-excitation method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(5): 872-879. doi: 10.13700/j.bh.1001-5965.2016.0335(in Chinese)
Citation: LYU Weimin, XIAO Yang, FANG Dengjianet al. Design of missile vibration spectrum based on inverse pseudo-excitation method[J]. Journal of Beijing University of Aeronautics and Astronautics, 2017, 43(5): 872-879. doi: 10.13700/j.bh.1001-5965.2016.0335(in Chinese)

基于逆虚拟激励法的导弹振动谱设计

doi: 10.13700/j.bh.1001-5965.2016.0335
详细信息
    作者简介:

    吕卫民, 男, 博士, 教授, 博士生导师。主要研究方向:系统可靠性工程、PHM

    肖阳, 男, 硕士研究生。主要研究方向:装备可靠性试验

    通讯作者:

    吕卫民, E-mail:lwm_yt@sina.com

  • 中图分类号: TJ760.1

Design of missile vibration spectrum based on inverse pseudo-excitation method

More Information
  • 摘要:

    针对导弹在延寿试验过程中振动谱设计精度低、与实际载荷剖面差距大的问题,提出一种基于逆虚拟激励法的导弹振动谱设计方法。首先,建立了导弹-悬架系统四自由度振动模型,推导出系统激励响应关系;然后,对系统时域响应数据进行Fourier变换,得到响应功率谱矩阵并对其进行分解,构造虚拟简谐响应;最后,基于逆虚拟激励法求得系统激励功率谱,并讨论了响应噪声及系统阻尼对识别精度的影响。实验结果表明:本文方法对于随机振动载荷的识别精度较高、鲁棒性好,零噪声识别误差为2.39%,30%噪声条件下识别误差为3.21%。本文方法同样适用于其他装备的振动试验谱的设计。

     

  • 图 1  导弹-悬架系统四自由度振动模型

    Figure 1.  Four-degree-of-freedom vibration model of missile-suspension system

    图 2  运输车前后轮及导弹质心垂直位移PSD

    Figure 2.  Vertical displacement PSD of front-rear wheels of vehicle and missile centroid

    图 3  前轮识别功率谱密度及误差曲线

    Figure 3.  Identified PSD and identification error curves of front wheels

    图 4  后轮识别功率谱密度及误差曲线

    Figure 4.  Identified PSD and identification error curves of rear wheels

    图 5  30%噪声条件下前轮识别功率谱密度及误差曲线

    Figure 5.  Identified PSD and identification error curves of front wheels under condition of 30% noise

    图 6  60%系统阻尼前轮识别功率谱密度及误差曲线

    Figure 6.  Identified PSD and identification error curves of front wheels under condition of 60% system damping

    图 7  30%系统阻尼前轮识别功率谱密度及误差曲线

    Figure 7.  Identified PSD and identification error curves of front wheels under condition of 30% system damping

    表  1  仿真参数

    Table  1.   Simulation parameters

    变量 m1/kg m2/kg m3/kg k1/(kN·m-1) k2/(kN·m-1) k3/(kN·m-1) k4/(kN·m-1) c1/(Ns·m-1) c2/(Ns·m-1) l1/m l2/m A/m wo/(rad·s-1) v/(m·s-1)
    数值 1 000 40 45 18 24 190 220 350 600 3 2 20 30 50
    下载: 导出CSV
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出版历程
  • 收稿日期:  2016-04-26
  • 录用日期:  2016-07-16
  • 刊出日期:  2017-05-20

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