| 基于改进周期图法的频响函数估计分析研究 |
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| 引用本文： | 陈栋.基于改进周期图法的频响函数估计分析研究[J].中国科技信息,2013(22):114-115. |
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| 作者姓名： | 陈栋 |
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| 作者单位： | 南京信息职业技术学院中认新能源技术学院 |
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| 摘 要： | 目前常见大型复杂结构的模态参数识别方法主要采用频域法进行识别,即通过测得系统结构的频响函数来识别模态参数,故频响函数估计精度直接导致模态参数的识别结果的好坏.本文采用改进周期图法对频响函数进行估计,仿真分析结果表明,采用该方法可以提高频响函数估计的精度.
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| 关 键 词： | 周期图 频响函数 Matlab |
Frequency Response Function Research Based on Modified Periodogram |
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| Chen Dong.Frequency Response Function Research Based on Modified Periodogram[J].CHINA SCIENCE AND TECHNOLOGY INFORMATION,2013(22):114-115. |
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| Authors: | Chen Dong |
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| Institution: | Chen Dong School of CQC New Energy Technology, Nanjing College of Information Technology, Nanjing 210023, China |
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| Abstract: | Nowadays modal parameters identification method for large complex structure mainly adopts frequency domain method, that is, measured system frequency response function （FRF） identifies modal parameters, so FRF estimate precision leads to modal parameters identification result. This paper adopts modified periodogram to estimate FRF. Simulation result shows this method can improve FRF estimation precision. |
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| Keywords: | periodogram frequency response function Maflab |
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