| 一种宽频带模态识别算法的快速实现 |
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| 引用本文： | 陈小毛,梁世波,邓克绪.一种宽频带模态识别算法的快速实现[J].南京航空航天大学学报,2010,42(1). |
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| 作者姓名： | 陈小毛 梁世波 邓克绪 |
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| 作者单位： | 南京航空航天大学无人机研究院,南京,210016 |
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| 摘 要： | 多参考点最小二乘复频域法(p-LSCF)是近几年来提出的宽频带模态参数识别算法,该方法在抗干扰能力、识别密集模态以及处理大阻尼复杂结构方面具有非常好的特性。为了提高模态参数的识别速度,采用FFT运算实现了该识别方法的快速计算。最后通过仿真算例与实测算例进行验证。结果表明:在不损失精度的情况下,能够提高参数识别速度。
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| 关 键 词： | 试验模态分析 p-LSCF方法 快速实现 稳定图 |
Fast Implementation for Broadband Modal Identification |
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| Chen Xiaomao,Liang Shibo,Deng Kexu.Fast Implementation for Broadband Modal Identification[J].Journal of Nanjing University of Aeronautics & Astronautics,2010,42(1). |
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| Authors: | Chen Xiaomao Liang Shibo Deng Kexu |
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| Institution: | Research Insititute of Unmanned Aircraft/a>;Nanjing University of Aeronautics & Astronautics/a>;Nanjing/a>;210016/a>;China |
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| Abstract: | A poly-reference least square complex frequency-domain is a broadband modal identification algorithm developed in recent years.It has many advantages in handling high noisy data,closely coupled modes and high damping structure.To improve modal parameter identification,a fast implementation of p-LSCF is proposed by using FFT algorithm.A simulation case and an application case are used to validate the fast implementation.Results show that the fast implementation can improve the modal identification without th... |
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| Keywords: | modal analysis p-LSCF method fast implementation stabilization chart |
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