环境振动

收集环境振动能微压电发电装置的制作与测试FAIR收集环二极超导磁体外杜瓦泄放系统的概念设计

Fabrication and Testing of Micro Piezoelectric Power Generator for Collecting Ambient Vibration Energy Conceptual design of the venting device for dewar of CR dipole superconducting magnet of FAIR

环境振动识别方法利用结构的输出信号识别结构的模态参数，主要的识别方法有时间序列分析法、ERA（EigensystemRealizationAlgorithm）法和随机子空间法，这些方法均基于离散模型。

Ambient vibration method is identification of the modal parameters for structures by the output data . Main identification methods are based on disperse space model , such as time serials analysis , ERA ( eigensystem realization algorithm ) method and stochastic subspace method .

地铁引起城市环境振动Z振级的试验研究

Research for the Degree of Z Direction Vibration about the City Environment Affected by Subway

基于LMS算法的移相干涉仪环境振动控制器

Adaptive controller based on LMS algorithm for compensating environmental vibration of a phase-shifting interferometer

结果表明：He-Ne激光器出射光束的指向主要受温度、环境振动、空气扰动和激光器自身结构的影响。

The result shows that the direction of the emergent beam from He-Ne laser is influenced mainly by temperature , vibration , air disturbance and laser structure .

此外，本文还根据实测资料和现有研究成果提出了该地铁1号线引起环境振动Z振级的统计回归公式。

Based on the observed dataset and existing research results a statistic regression formula is presented to predict the environmental vibration induced by the No. 1 Route of this subway . grade .

给出了广州地铁一号线运营时沿线地表环境振动测试结果，并根据实测结果提出了地铁对城市环境振动Z振级的经验公式。

From the city environment vibration data of the Z direction round NO.1 Route of Guangzhou Subway , the formula of the magnitude about the vibration affected by subway is presented in this paper .

移相干涉术（PSI）是一种高精度、高灵敏度、非接触式光学测试方法，易受环境振动的影响，环境振动是移相干涉仪测量误差的主要来源之一。

Phase-shifting interferometry ( PSI ) is a highly sensitive method employed for non-contact precision optical testing . However , the external micro-vibrations are often the dominant error sources in phase-shifting interferometers since its sensitivity .

首先介绍了全桥现场环境振动试验的概况：然后利用频域中的峰值法（PP）和时域中的随机子空间识别法（SSI）分别进行桥梁模态参数识别；

The ambient vibration field-testings were firstly carried out . Secondly , the peak picking ( PP ) method in frequency domain and the stochastic subspace identification ( SSI ) method in time domain were used for the output-only modal parameter identification .

RAH-66环境振动合格性要求

RAH-66 Enviromental Vibration Qualification Requirements

Gabor同轴数字全息具有光路简单、受环境振动和空气扰动影响小，且对光源的相干性和记录器件的空间分辨率要求较低等优点，但直流项和共轭像的存在影响了再现像质量。

Gabor in-line digital holography has simple optical path , low influence from outside environment , and low requirements for the coherence of light source and spatial resolution of recording device , but zero-order image and conjugate image affect the quality of reconstructed image .

近年来，地铁运营引起的环境振动问题越来越受到人们的关注，尤其是低频（＜20Hz）振动对高精密仪器、设备等的影响。

In recent years , environmental vibrations induced by metro trains have been paid more and more attention ; especially the low frequency ( 20 Hz ) vibrations might affect the operation of sensitive equipment and high-tech machinery .

重庆地铁岩石隧道环境振动衰减规律

Study of environmental vibration attenuation rule in Chongqing underground rock tunnel

京沪高速铁路环境振动建议限值

The Limit Value of Environmental Vibration for the Beijing-Shanghai High-speed Railway

强夯施工环境振动影响的评价方法

Evaluation method of the environmental vibration effects caused by dynamic compaction

基于环境振动的实验模态分析方法研究

The Research of Experimental Modal Analysis Methods Based on Ambient Vibration

环境振动允许值与防振间距

Permissible Values of Environmental Vibration and It 's Vibration-Proof Distance

基于环境振动测试的桥梁动力特性

Dynamic Characteristics for Cables-stayed Bridge Based on Ambient Vibration Testing

干线铁路环境振动源强特性试验分析

Experimental and Analytical on Source Characteristic of Environmental Vibration in Main Railway

光学精密航天仪器运载中的环境振动试验研究

Research on environment vibration experiment upon optical precision spaceflight apparatus during transportation

选煤厂楼层内设备引起的环境振动分析

Study on environment vibration caused by equipment of multi-storey coal preparation plant

大型建筑物环境振动模态分析的归总方法

An Uniformization Method for Ambient Vibration Modal Analysis of Extra Large Constructions

基于环境振动的既有预应力连续刚构桥地震响应分析

Ambient Vibration-based Seismic Response Analysis of an Existing Prestressed Continuous Rigid-framed Bridge

基于环境振动的斜拉桥拉索基频识别

Ambient vibration based identification of fundamental frequencies of stay cables

车辆通过减速带引起周边环境振动的分析

Study on Vibration Induced by Vehicles Crossing Speed Control Humps

上海磁悬浮快速列车环境振动影响探讨

The Analysis of Environmental Impact for Maglev Vibration in Shanghai

交通荷载引起的环境振动实测与分析

The Vibration Measurement and Evaluation due to the Traffic Loads

基于环境振动测量值的悬索桥结构动力模型修正

Model Updating of a Suspension Bridge Using Ambient Vibration Measurements

应县木塔环境振动试验

Ambient vibration test of a wood tower in Ying County

二级模糊综合评判法在城市区域环境振动功能区划中的应用

Application of Secondary Fuzzy Comprehensive Evaluation to the Urban Vibration Functional Zoning