提出一种环境激励下的模态识别方法。
A kind of method of modal identification subject to ambient excitation is presented.
利用频域-空间域分解法，建立桥梁运行模态识别方法。
Operational modal analysis method of bridge was built based on frequency domain and spatial domain decomposition.
首先，本文对基于振动模态分析理论的损伤识别方法进行了探讨。
Firstly, the damage identification method based on vibration modal analysis theory is discussed and analyzed.
作为方法的应用实例，讨论了补充激振力为脉冲情况下的模态参数识别方法。
As a application example of this kind of method, a way of identifying modal parameters when additional external force is impulse is investigated.
介绍一种基于多参考点最小二乘频域法(一种工作模态法)的刚体参数识别方法。
A rigid body parameters identification method based on muhi-reference least-squares frequency domain scheme (one of the operational modal analysis techniques) is presented.
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。
The numerical examples explain that the method of modal parameter identification and load identification in this thesis both are reasonable, applicable for factual engineering.
在此基础上提出了基于模态参数的BP神经网络结构损伤识别方法。
Based on this, bring forward the BP neural network structural damage detection method based on modal parameters.
基于模态理论，针对滑动轴承支撑的挠性转子系统，提出了一种新的不平衡量在线识别方法。
Based on the model theory and with the use of electromagnetic exciter (ea), a new imbalance (identification) technique for flexible rotor supported by fluid bearings was presented.
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。
Based on the identification objective, the structural identification methods can be divided into modal parameter identification and structural physical parameter identification.
研究了适用于桥梁和连续梁结构的基于曲率模态振型的损伤识别方法。
A damage identification approach applied aptly in Bridges and continuous beams, based on the curvature mode shapes, was studied in this paper.
为了评定此桥梁损伤识别方法的稳定性，在模态参数带有一定的随机误差的情况下，分析了这种桥梁损伤识别方法的结构物理参数的统计特性。
To evaluate the stability of the proposed method, the statistical properties of the physical parameters of the bridge structure were analyzed under the model parameters with random errors.
本论文结合基于模态应变能改变的损伤识别方法、随机有限元法、概率统计方法，得出一套基于模态应变能改变的损伤统计识别方法。
The thesis combines finite element method, modal strain energy of change, and statistic method, develops a sort of damage statistic identification method.
本文系统地研究了基于遗传算法的线性结构系统模态参数识别方法。
This paper studied the linear structure system modal parameters identification based on Genetic Algorithms.
本文提出了基于模态应变能耗散率理论的一种新的结构损伤识别方法。
A new model_based method for structural damage detection, which is based on the theory of dissipation ratio of modal strain energy, is put forward.
在此基础上对基于模态应变能的损伤识别方法进行了深入探讨，并提出了基于模态应变能比变化率的损伤识别新指标。
We go deep into discussing the studies on structural damage detection based on modal strain energy, and propose a new damage detection index based on the change of modal strain energy ratio.
针对该问题，提出一种基于频响函数左矩阵分式模型的模态参数识别方法。
Focusing on this problem, a modal parameters identification algorithm based on left matrix fraction description of FRF was proposed.
研究了基于应变模态的钢结构构件焊缝损伤的自动识别方法。
The strain mode based approach to identify weld damage in members of steel structure automatically is demonstrated in present paper.
本文介绍了带外挂风洞颤振模型模态试验与参数识别方法。
Modal test and parameter identification of a wind tunnel flutter model simulating a wing with external missiles are presented in this paper.
本文介绍了带外挂风洞颤振模型模态试验与参数识别方法。
Modal test and parameter identification of a wind tunnel flutter model, similar to a wing with external missiles, are presented in this paper.
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。
Structural modal parameter identification under ambient vibration is becoming the main research area.
本文以大型工程结构为研究对象，以近代实验模态分析理论及环境振动识别技术为基础，着重研究了两类基于环境振动的模态参数识别方法。
Two modal identification methods undergoing ambient excitation are investigated for the object of large structures based on modern experimental modal analysis theory and ambient vibration technology.
针对现有车型识别存在的问题，提出利用经验模态分解和支持向量机的车型声频识别方法。
For the problem of automatic vehicle recognition, a recognition method is proposed based on EMD and support vector machine.
简要介绍了用频域参数识别方法和时域参数识别方法识别模态频率和阻尼的基本原理和基本数学模型。
It Outlines the fundamentals and the basic mathematical model of identifying modal frequency and damping by means of parameter identification with frequency domain and time domain.
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。
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.
本文采用截面状态矢量法和模态参数识别方法识别出CM 1107单轴纵切自动车床主轴部件的支承参数和模态参数。
The state vector methd of cross-section and modal analysis methd are used to identify the support and modal parameters of the spindle unit of the single spindle longitudinal automatic lathe mod.
本文采用截面状态矢量法和模态参数识别方法识别出CM 1107单轴纵切自动车床主轴部件的支承参数和模态参数。
The state vector methd of cross-section and modal analysis methd are used to identify the support and modal parameters of the spindle unit of the single spindle longitudinal automatic lathe mod.
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