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模态置信度
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  modal assurance criterion
     Two optimal principles of sensor placement, Modal Assurance Criterion (MAC) and Displacement Energy, have been discussed based on the relativity of modes and the displacement energy.
     从各阶模态向量的相关性和变形能出发,讨论了模态置信度和变形能两种传感器优化配置的准则;
短句来源
     Combines the analytical model and experimental model together,modal assurance criterion is used to assess the correlation between two modes shapes.
     将计算与试验结果进行数据融合 ,以给定模态置信度准则为基础 ,进行模型的迭代修正分析 ,进而构造精确的结构系统动力模型。
短句来源
     Taking the maximum off diagonal element of the Modal Assurance Criterion (MAC) matrix as a target function, a cumulative method is provided to obtain a sensor placement, and it is proposed that both optimal result and economy must be considered in a sensor placement.
     以模态置信度 MAC矩阵的最大非对角元为目标函数 ,利用本文提出的修正逐步累积法得到传感器的配置 ,并提出传感器配置必须结合优化效果和经济性 2方面综合考虑
短句来源
  “模态置信度”译为未确定词的双语例句
     Actuality of damage identification for structures is expatiated and comments are made on the methods of them. These methods include natural frequency, strain modal shape, COM AC, flexibility matrix, wavelet analysis, genetic algorithms etc.
     本文阐述了结构损伤识别的现状,并对有关损伤诊断的一些方法进行了评价,这些方法包括:固有频率、应变模态、模态置信度判据、柔度矩阵、小波分析、遗传算法等等。
短句来源
     Actuality of damage identification for structures is expatiated firstly and comments are made on the methods of them. These methods include natural frequency, strain mode, COMAC, flexibility matrix, wavelet analysis, nerve network and genetic algorithms etc.
     本文首先阐述了结构损伤识别的现状,并对有关损伤识别的一些方法进行了评价,这些方法包括:固有频率、应变模态、模态置信度判据、柔度矩阵、小波分析、神经网络及遗传算法等。
短句来源
     And then, Actuality of damage identification for structures is expatiated and comments are made on the methods of them. These methods include natural frequency, strain modal shape, COMAC, flexibility matrix, wavelet analysis, genetic algorithms etc. Finally, through some of numerical simulation to a continuous beam bridge, local damage localization based on dynamic signatures is Presented.
     然后,本文阐述了结构损伤识别的现状,并对有关损伤诊断的一些方法进行了评价,这些方法包括:固有频率、应变模态、模态置信度判据、柔度矩阵、小波分析、遗传算法等等。
短句来源
  相似匹配句对
     THE MODAL ANALYSIS OF THE SCREEN FRAME
     筛框模态分析
短句来源
     Modal Interpretation of Quantum Mechanics
     量子力学的模态解释
短句来源
     The Confidence for Durability Design
     耐久性设计的置信度
短句来源
     THE CONFIDENCE LEVEL OF FATIGUE STRENGTH
     疲劳强度的置信度
短句来源
     Two optimal principles of sensor placement, Modal Assurance Criterion (MAC) and Displacement Energy, have been discussed based on the relativity of modes and the displacement energy.
     从各阶模态向量的相关性和变形能出发,讨论了模态置信度和变形能两种传感器优化配置的准则;
短句来源
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  modal assurance criterion
The coordinate modal assurance criterion (CoMAC), and the modal vector error (MVE) are used to quantify the change of mode shape between the undamaged and damaged structures.
      
In contrast with most of the existing updating techniques, which minimize modal force errors, objective functions based on Coordinate Modal Assurance Criterion (COMAC) and Frequency Response Assurance Criterion (FRAC) were employed.
      
It was found that the modal assurance criterion is a useful criterion to judge the degree of similarity between experimental and numerical models.
      


This paper describes the basic principle of Eigensystem Realization Algorithm(ERA)and the defini-tions of two indicators of modal pure degree;analyzes and examines the ERA identification capability by us-ing simulated data with different noise level;describes the parameter identification of automobile enginemounts.The practice shows that ERA has a good prospect in engineering applications.

本文论述了特征系统实现算法(ERA)的基本原理和用于模态置信度评估的两个因子,利用模拟数据考核了自编ERA 程序及其抗噪能力,实施了汽车发动机悬置系统模态参数的辨识。实践表明,ERA 法具有良好的工程实用前景。

A method of modeling analysis of structral system is investigated.LINK process is used which performs finite element analysis and test model analyses by means of correlation,compared with traditional FEM or test model,LINK modeling possesses high reliability. Combines the analytical model and experimental model together,modal assurance criterion is used to assess the correlation between two modes shapes.Results of a beam structure illustrate the effectiveness of LINK based on updating analysis.

针对有限元和试验模态分析的局限性 ,探讨了一种有限元分析与动态试验相结合的模型修正方法 ,即基于LINK的结构系统建模方法。将计算与试验结果进行数据融合 ,以给定模态置信度准则为基础 ,进行模型的迭代修正分析 ,进而构造精确的结构系统动力模型。最后基于LINK方法 ,对梁结构进行了计算与试验相结合的建模分析 ,取得了良好的效果。

A sensor placement algorithm is discussed in this paper. The initial sensor assignment is obtained by the QR decomposition of the structural mode shape matrix to ensure the estimation accuracy of the parameters. Taking the maximum off diagonal element of the Modal Assurance Criterion (MAC) matrix as a target function, a cumulative method is provided to obtain a sensor placement, and it is proposed that both optimal result and economy must be considered in a sensor placement.

讨论了模态实验中传感器的配置问题。利用结构振型矩阵转置的 QR分解得到传感器的初始配置。以模态置信度 MAC矩阵的最大非对角元为目标函数 ,利用本文提出的修正逐步累积法得到传感器的配置 ,并提出传感器配置必须结合优化效果和经济性 2方面综合考虑

 
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