| 一种提高参数识别精度的滤波方法 |
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| 引用本文： | 陈昭怡,王复兴,叶凌云. 一种提高参数识别精度的滤波方法[J]. 中北大学学报(自然科学版), 1989, 0(4) |
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| 作者姓名： | 陈昭怡 王复兴 叶凌云 |
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| 摘 要： | 本文提出对时间序列数据进行预处理,然后进行模态参数识别以提高识别精度的观点,并引入了相应的适应化平滑滤波算法.推导了由时域识别法之残差平方和来估计时间序列的噪声方差的理论依据.由算例及分析表明,这种预处理效果很好,有一定的使用价值.
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| 关 键 词： | 振动 时域分析 平滑滤波 |
A FILTER METHOD OF IMPROVING PRECISION OF PARAMETERS IDENTIFICATION |
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| Chen Zhaoyi Wang Fuxing Ye Lingyun. A FILTER METHOD OF IMPROVING PRECISION OF PARAMETERS IDENTIFICATION[J]. Journal of North University of China, 1989, 0(4) |
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| Authors: | Chen Zhaoyi Wang Fuxing Ye Lingyun |
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| Affiliation: | Chen Zhaoyi Wang Fuxing Ye Lingyun |
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| Abstract: | In this paper,a method for improving the identification preci- sion is proposed,in which the data of time series are pretreated, then the modal parameters are identified in time domain.The rele- vant adaptive filter calculation method is introduced.The the- oretical basis of estimating the variance of the date error by us- ing the residual sum of squares of the time identification,is ve- rified.Making clear by examples and analyses,the effects of the pretreatmant is quite good. |
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| Keywords: | vibration time domain analysis smoothing filtering |
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