振动源

主要研究内容如下：针对振动源模式识别率低的问题，提出了基于投影比例的K最近邻分类方法（KNNPS）。

The main contents are as follows : According to the problem of the low pattern recognition rate of the vibration source , ak-Nearest Neighbors method based on projection scale ( KNNPS ) is proposed .

达到了压电双晶片振子结构，振子谐振频率为300Hz，当外加电压达300V时，振子偏转位移量大于1.7mm，故可作为一种理想的振动源。

The result showed that the resonance frequency can reach 300 Hz when input voltage is 300 V and the deflection amplitude is larger than 1.7 mm , indicating that it is a desirable vibration source .

对实现STM理论精度有重大影响的振动源的物理机理以及防振的措施；

The physical mechanism and vibration-proof measures which greatly influence the theoretical precision of STM ;

从理论和实验两个方面着手，研究了对实现STM理论精度有重大影响的噪声和振动源的物理机理以及减振降噪的技术措施。

The physical mechanism and improved steps concerning noise and vibration which influence the theoretical precision of STM .

从Helmholtz积分方程出发，利用奇异值分解技术和统计计算方法，导出了任意形振动源表面振速重建公式。

Based on the Helmholtz integral equation , the velocity reconstruction formulas of vibrating sources with arbitrarily shaped surface are established , utilizing the technique of Singular Value Decomposition ( SVD ) and the statistical calculating method .

从振动源和传播过程两方面降低能量辐射。

The energy radiation is reduced from fault sources and propagating processes .

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

任意形振动源表面振速分布的重建

Velocity Reconstruction of Vibrating Sources with Arbitrarily Shaped Surfaces

激励源的设计。船舶机械振动源激励力的间接估算工程方法

Engineering Approaches of the Indirect Force Estimation on Vibration Sources of Machinery in Ships

发动机曲轴连杆机构振动源仿真分析

Dynamic Simulation of Vibration Source of Crankshaft System

基于最小互信息原理的机械振动源分离研究

Study on Separation of Mechanical Vibration Based on the Principle of the Minimum Mutual Information

机械振动源信号的分离与分析对于机械系统的状态监测与故障诊断具有重要理论意义和实用价值。

The separation and analysis of the mechanical vibration signal is important to machine monitoring and faults diagnosis .

并从控制噪声与振动源、隔离传播途径等方面，提出了城市轨道交通中减振降噪的控制措施，为解决城市轨道交通发展中的环境问题提供参考。

All of these provide reference for resolving environmental prob - lems during the development of urban rail transport .

当振动源频率和皮带秤固有频率接近时，皮带秤将发生共振。

When the vibration source frequency approaches to the natural frequency of belt weigher , the belt weigher will bring resonance .

本文应用声频谱分析的方法对空压机的噪声源和振动源进行特征分析，提出了一套较完整的便于现场应用推广的综合控制方案。

Using analysis by sound spectrum , this article deals with the characterization of noise source and vibration source in air compressor .

超大功率振动源在首都圈地区地震监测预报中的应用研究

Research on the Application of the Ultra-Large Power Vibratory Sources to Seismic Monitoring and Earthquake Prediction in the Capital Region of China

试验表明，该方法用于车辆噪声。振动源识别比传统的分析方法更为简单、有效；

Experimental results show that this method is more simple and effective than traditional one in identification of noise and vibration source of automobiles ;

在实际测量过程中，除了过滤干扰信号，提取有效信号外，多振动源信号分离是本文研究的一个难点。

Beside filtering interference signals and extract effective signals , it is a difficult problem to study the separation of multi-signal of sound wave and vibration .

这种采用压电陶瓷作为光相位调制器的干涉仪具有线性范围广，灵敏度高等特点，可应用于对外界环境振动源的监测或用于检测压电陶瓷自身的动态特性。

The system , with its wide linear range and high sensitivity , can be applied in detection of environmental vibrations or dynamic behavior of PZT .

应用实测数据和理论计算的结论对振动源进行理论分析，分析振动形成的过程。

The vibration theory and the process of coming into vibration for the vibration source are analyzed by using process data and the calculated conclusion of theory .

在电子皮带秤的安装现场周围，有时存在固定频率的振动源导致电子皮带秤产生受迫振动。

In the installment scene of electronic belt weigher , around which there is natural frequency vibration source which compel the electronic belt weigher to bring vibration .

航空发动机运行时各振动源及噪声相互混叠的问题已成为其故障诊断和特征提取的一大难题。

The vibration sources and noise mixed with each other when the aero-engine operating , which has become a major challenge when fault detection and feature extraction .

本文首先介绍了干涉抗振技术的发展近况，比较了几种主动抗振方法并分析了干涉仪振动源对干涉条纹的影响。

Firstly , the progress of interferometry anti-vibration is introduced and several methods of active anti-vibration are compared . The influence of vibration sources are also analyzed .

基于以上研究，建立了控制振动源和振动源发生后控制机架共振发生和加剧的控制模型，并投入实际使用。

Based on the research hereinbefore , the new model in order to control vibration source and prevent sympathetic vibration has been established and used in the rolling .

噪声，振动源为振动台提供：振动频率为30赫兹，振动加速度为3～5米/秒~2；

A vibrator provides both a vibration of 30 Hz with acceleration of 3-5 m / sec ~ 2 , and a noise of 87,5 dB ( A ) .

多弓受流是一个多移动振动源的机械振动，这些振动源和接触网一起组成一个复杂的振动系统。

The multi-pantograph current collection is a kind of mechanical vibration with multi-movable vibration sources , and these vibration sources together with the catenary compose a complex vibration system .

解决皮带秤共振现象的一种方法就是要消除振动源、采取隔振措施或改变振动源的振动频率；

One of the methods to solve resonance phenomenon is to eliminate the vibration source , to take the vibration isolation measure or change the vibration frequency of the vibration source ;

人们愈来愈认识到，机器和其它振动源，向支撑和与之相连接的结构发射的结构声，除了平动成份之外，还有转动成份。

It is increasingly recognized that machines and other vibrational sources can impart structure-borne sound power into supporting and connected structures through rotational components of excitation as well as translational components .

国度《住宅设计标准》中规则：住宅建筑中不宜布置锅炉、变压器及其它有噪声振动源等设备用房。

Country " Residential Design Standards " in the rules : residential buildings should not be arranged in the boiler , transformers and other sources of noise vibration and other equipment space .

浮筏系统的优良减振效果部分来自于其内部阻尼耗散了振动源传递过来的振动能量。

The interior damping of the raft dissipates the transmission energy from the vibrating source , which is one reason that the floating raft system has an outstanding performance in vibration isolation .