A New Optimum Estimation Approach to Structural Dynamic Parameters with Complex Error Vectors

机译：具有复杂误差向量的结构动力参数最优估计新方法。

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摘要

A new optimum estimation approach is proposed in this paper to identify the dynamic parameters of structural vibration system. This development is based on the complex error vectors which consider not only the norm index but also the phase error index. Firstly,the mathematical model of linear structural dynamic system may be expressed in the modal superposition form and in the transfer function form. Then,a new least square estimation which contains the new optimum estimation factor is derived by considering above two error indexes. Numerical examples show that some improvements of dynamic parameters estimation are obtained by use of the approach.

机译：本文提出了一种新的最优估计方法，以识别结构振动系统的动力学参数。这种发展是基于复杂的误差向量的，该向量不仅考虑标准指标，而且考虑相位误差指标。首先，线性结构动力系统的数学模型可以用模态叠加形式和传递函数形式表示。然后，通过考虑上述两个误差指标，得出包含新的最优估计因子的新的最小二乘估计。数值算例表明，该方法对动态参数估计有一定的改进。

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来源
《International Symposium on Structural Engineering for Young Experts; 20060818-21; Fuzhou amp; Xiamen(CN)》|2006年|P.446-450|共5页
会议地点 Fuzhou Xiamen(CN)
作者
Jian-Lin Zhang; Jie-Sheng Jiang; Xun-An Zhang;
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作者单位

College of Architecture and Civil Engineering, Xiamen University Xiamen 361005, P. R. China;

College of Mechanics and Civil Engineering, Northwestern Polytechnical University Xi'an 710072,P. R.China;

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原文格式 PDF
正文语种 eng
中图分类建筑结构;
关键词
dynamic parameter; estimation; error index; transfer function;

机译：动态参数估计误差指标传递函数;

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A New Optimum Estimation Approach to Structural Dynamic Parameters with Complex Error Vectors

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