表面振动

SnO2纳米带的红外谱图中560.6cm-1处的峰属于表面振动模式；

The peak at 560.6 cm-1 in the infrared spectrum is attributed to the surface vibration .

在发动机转速7200r／min下进行表面振动实验，获得的紧固螺栓的振动速度值作为频率响应分析的载荷。

The surface vibration experiment was carried out at the engine speed of 7200r / min for getting the vibrational speed nearby the bolts . The speed can be the load of frequency response analysis .

辐射声功率级、表面振动均方速度级和辐射效率级都随着复刚度值Z的减小而减小。

The radiation sound pressure level , the mean vibration velocity level , radiation efficiency reduce with reducing of the complex stiffness .

点焊电极表面振动电火花熔敷TiC的研究

The Study of Deposition of TiC on the Electrode Tip Surface of Resistance Spot Welding by Vibrating Electric Sparking

采用递推方法计算了相应的表面振动的投影态密度，与电子能量损失谱（EELS）所得到的实验结果符合得较好。

The calculated force constants lead to good agreement between the projected state densities of surface vibrations calculated by Recursion Method and the experimental results of electron-energy-loss-spectroscopy .

通过引入虚拟系统的概念，利用缸盖表面振动信号的自回归滑动平均模型（ARMA模型）求出了实际缸盖系统的传递函数，并将其应用于重建缸内气体压力曲线。

With the concept of " Assumed System ", the transfer function of real cylinder head system is established using the ARMA models of surface vibration signals of cylinder head . Then this transfer function is successfully used to reconstruct the gas pressure trace inside the cylinder .

根据柴油机表面振动信号非平稳时变的特性，采用小波对柴油机缸体表面的振动信号进行分解得到特征信息量，并以此建立AR模型，计算得到KL信息量。

According to non-stationary , time-varying characteristics of a diesel engine surface vibration signal , this work made use of wavelet to decompose the diesel engine surface vibration signal and obtained the characteristic information based on which the AR model was built and the KL information quantum was computed .

由机体结构设计减小表面振动响应

Reducing Engine Block Surface Vibration Response by Its Structure Design

相干探测在物体表面振动谱测量中的应用

Application of Coherent Detect in Vibration Measurement of Far Object

采用表面振动波分析技术检测鸡蛋蛋壳裂纹。

Eggshell crack detection based on the surface wave analysis .

带钢表面振动纹的产生及其抑制

Cause and Control of Chatter Marks on Steel Strip Surface

内燃机表面振动信号的性质

Study on features of surface vibration signals of the internal combustion engine

用生成坐标方法处理对振动与表面振动之间的耦合

The generator coordinate method for the coupling between the pairing and surface vibrations

曲轴三维振动与机体裙部表面振动的耦合关系研究

Coupling relationship between three-dimensional vibration of the crankshaft and surface vibration of the crankcase

运行中的电力变压器油箱表面振动信号的研究

Study on Vibration Signals of Oil Tank Surface of the Power Transformer in Service

利用机体表面振动信号诊断活塞环失效的研究

Diagnosis of Compressing Rings Fault from the Vibration Signal of the Engines Block Surface

研究了发动机气缸压力信号与表面振动响应信号之间的反卷积关系；

The deconvolution between cylinder pressure signal and head bolt vibration signal was analyzed .

弹性地基的表面振动特性及其应用研究

Characteristics of Vibration at Ground Surface and Applications

内燃机活塞拍击表面振动与燃烧噪声的关系

Study on the Relation Between Piston Impinging Vibration and Combustion Noise of Internal Combustion Engines

对于复杂的机器结构，提出一种寻找机身表面振动检测点的方法。

A measurement of selecting block-surface detecting position is offered according to the complicated machine .

减小内燃机薄壁部件表面振动响应的研究

A Study on Reducing the Surface Vibration Response of Shell Component of Internal Combustion Engine

本文以一台车用六缸柴油机为例，研究了发动机的表面振动和发动机的表面辐射噪声。

An experimental study on engine surface vibration and radiated noise is carried out in this paper .

研究内燃机表面振动信号，阐明内燃机振动信号是十分复杂的非平稳随机信号；

The characteristics of the surface vibration signals of the internal combustion engine are studied in this paper .

本文提出了一种新的柴油机表面振动信号的故障特征的提取方法，利用柴油机表面振动信号经过小波降噪处理，有效地剔除柴油机表面振动信号的噪声干扰，提高信号的信噪比。

Based on wavelet analysis , a new method is proposed for feature extraction of diesel engine vibration signal .

然后对该端盖进行了频率响应分析，分析其表面振动响应情况。

Secondly , the frequency response of the cover is researched , and the surface vibration response is analyzed .

分析了涡旋压缩机振动和噪声特性，研究了涡旋压缩机表面振动信号与噪声信号的关联关系；

The properties of scroll compressor vibration and noise were analyzed , and the relations of them were researched firstly .

阐述了车用柴油机预知维修的原理及意义和局域波法原理，利用此方法对柴油机缸盖表面振动信号进行分析，提取出能够表征其内部状态信息的特征参数。

The principle of vehicle diesel engine predicting maintenance was discussed and feature parameters were obtained using local wave method .

基于偏相干函数分析的曲轴箱表面振动和曲轴三维振动研究

A Study on 3D Vibration of the Crankshaft and Surface Vibration of the Crankcase based on Partial Coherence Function Analysis

并利用扫描式激光测振仪测量了柴油机表面振动速度分布，验证了声强测量法的正确性；

Furthermore , the accuracy of sound intensity measurement is verified by comparing with distribution of engine 's vibration velocity .

为此，研究了柴油机表面振动信号的产生机理，指导柴油机的特征提取。

Hence , the theory of vibration signals formed is researched which can be useful for diesel engine feature extraction .