The modal parameter estimation process is complicated enough.
模态参数估计过程已经够复杂的了。
A method of modal parameter identification using datas of random vibration tests is introduced.
文章介绍了利用随机振动的试验数据进行模态参数辨识的方法。
The accuracy of modal parameter estimation plays a crucial role in flutter boundary prediction.
准确估计模态参数在飞机颤振边界的预测中具有重要意义。
This is other good example where people can get confused when performing modal parameter estimation.
这又是一个很好的问题，是人们进行模态参数估计时会感到困惑的地方。
Structural modal parameter identification under ambient vibration is becoming the main research area.
基于环境振动的结构模态参数识别方法正逐渐成为国内外研究的一大热点。
The question is which poles are the correct ones to be used for the modal parameter estimation process.
问题是哪些极点是正确的，可以用于模态参数估计过程。
The method USES a modal parameter formulation and is applicable to the case of the energy loss shafts and nonlinear loads.
将一种分布式模态参数方法，应用于带有能量消耗和非线性载荷的大型转动轴。
A new method called direct eigensystem realization algorithm (DERA) is developed for structural modal parameter identification.
本文提出了一种新的结构模态参数识别算法，称为直接特征系统实现算法(DERA)。
The present paper offers a method of balancing dynamically the flexible rotors with the technique of modal parameter identification.
本文提出利用模态参数识别技术进行挠性转子动平衡的方法。
But at least all the data will be consistent and will not distort the modal parameter estimation process due to mass loading effects.
但是，至少所有的数据将是一致的，不会因为质量荷载影响造成模态参数估计过程失真。
Structure modal parameter online identification was used to monitor the structural health as evidenced by changes in the vibration characteristics.
为了实现结构基于振动特性的健康监测，进行了在线模态参数识别。
A careful selection of the best measured FRFs will generally produce much better global poles of the system for the modal parameter estimation process.
在模态参数估计过程中，仔细选择最好的测量频响通常会得到更好的系统全局极点。
Numerical simulation was done. The results show that it has good validity and accuracy to modal parameter identification of reticulated shell structures.
文中对该方法进行了数值模拟，结果表明，该方法能够 确保网壳结构模态参数识别的有效性和准确性。
Modal parameter estimation (commonly referred to as curvefitting) is probably, by far, the hardest part of experimental modal analysis for most people to understand.
到目前为止，对大多数人来讲，模态参数估计（通常称为曲线拟合）可能是试验模态分析中最难以理解的部分。
The numerical examples explain that the method of modal parameter identification and load identification in this thesis both are reasonable, applicable for factual engineering.
文中的数值算例分别验证了模态参数辨识及动态载荷识别方法的合理性、适用性及计算程序编制的正确性。
Based on the identification objective, the structural identification methods can be divided into modal parameter identification and structural physical parameter identification.
结构系统识别方法根据识别的对象可以分为模态参数识别和结构物理参数识别。
The modal parameter estimation process USES weighting terms, called modal participation factors, in order to utilize all of the referenced data to extract valid modal parameters.
为了利用所有的参考点数据来提取有效的模态参数，模态参数估计过程利用所谓的模态参与因子的加权项。
A novel recursive subspace method is presented for pseudo-modal parameter identification of time-varying structures based on projection approximation subspace tracking algorithm.
基于投影估计子空间跟踪算法提出了一种新的可用于时变结构模态参数识别的递推子空间方法。
Based on the modal analysis theory, modal testing system is built, and the modal parameter of the Diesel Engine Main parts and the Combined Structure are obtained by using software.
本文根据模态试验理论搭建了模态试验系统，获取了柴油发动机主要零部件及其组合结构的模态参数。
Take model of drill pipe frame as a example, experimental modal based on ODS s testing method is studied and the modal parameter is distinguished and the testing results are analyzed.
以钻架模型为实例，研究了其ODS测试方法试验模态，识别其模态参数，分析其测试结果。
For the problems faced with correcting analytical dynamic models of practical structures using results of modal parameter identification, a modified procedure is presented in this paper.
本文针对用模态参数识别结果修正结构理论计算模型所面临着的问题，提出了一个改进的修正过程。
The identification results of the 3-dof model parameters show that the continuous wavelet transform has high accuracy for the modal parameter identification of the large-scale structure.
通过三自由度模型模态参数的辨识，表明连续小波变换对于大型结构的模态参数辨识准确度高，具有现实意义。
Real modal parameter identification has been used and 13 modes are identified. The obtained modes are compared with the results from steady exciting, ambient vibration and FEM calculation.
在识别中采用了实模态识别法，识别出前13个模态参数，并与稳态激振、环境振动及有限元计算进行了比较，结果是比较符合的。
The variation of structural frequency before and after the damage is believed to be a most available and widely used modal parameter because of its easy testing and high measure precision.
由于结构频率容易测试并且有较高的测量精度，因此成为损伤识别中广泛应用的模态参数。
The variation of structural frequency before and after the damage is believed to be a most available and widely used modal parameter because of its easy testability and high measure precision.
由于结构频率测试容易测试并且有较高的测量精度，因此成为损伤识别中广泛应用的模态参数。
A concept of global frequency response function (GFRF) has been presented. The MIMO modal parameter identification modal has been established, based on the weighting sum of modal shape squares.
提出了整体频响函数的新概念(GFRF).以振型平方和的形式对全部频响函数进行加权组合，建立了多输入多输出模态参数的识别模型。
In this paper, the progress of modal parameter identification method for structure system in the past twenty years is discussed, and typical achievements by these methods are briefly introduced.
对结构系统模态参数识别方法近十几年来的最新研究成果进行了综述和总结。分析了模态参数识别方法的发展趋势，并对其中的典型研究成果进行简要的介绍。
A novel recursive subspace method is developed based on fixed length moving window (FLMW) projection approximation used for estimating the modal parameter of linear time-varying structural system.
给出了一个新的用于线性时变参数结构系统模态参数识别的基于固定长度平移窗投影估计的递推子空间方法。
Focusing on the defects of the classical modal parameter estimation approach, this paper investigates a novel technique for modal parameter identification of structures under operation conditions.
针对传统模态辨识方法存在的缺陷，研究了工程结构在环境激励下的模态参数的辨识问题。
It is analyse and calculation about the dynamic characteristic of motorcycle frame by FEM model, carry on validation through experimental modal method, Get back frame modal parameter and shake type.
利用有限元方法对摩托车车架动态特性进行了分析计算，并通过实验模态方法进行了相应的实验验证，获得了车架模态参数和振型。
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