vibration spectrum

Understand the vibration characteristics of testing equipment by responding spectrum analysis.

通过响应谱分析来了解对象的振动特性.

On the basis of historical records of maintenance and operation, abnormal vibration of DH air compressor was analyzed using frequency spectrum analysis method. It was found that the rust was washed off from interstage cooler into the flow passage of impeller to cause imbalance.

结合历次检修及运行记录，利用频谱分析方法对DH型空气压缩机的异常振动进行分析，判定出产生振动异常的原因为级间冷却器的锈蚀物冲刷至叶轮流道上造成不平衡。

When a traditional method based on FFT ( Fast Fourier Transformation) frequency spectrum analysis is used, it is very difficult to effectively differentiate between the thermal effects-induced serious vibration problems and rotor loss-of-balance failures occurring in a turbogenerator.

采用传统FFT频谱分析，很难将汽轮发电机组由热影响引起的剧烈振动问题和转子失衡故障有效地区分开。

The Acquisition System For Drill String Vibration Signals And The Spectrum Analysis

钻柱振动信号采集系统及谱分析

It describes the time-base analysis, wave form analysis, trace analysis and frequency spectrum analysis which are always used to evaluate the vibration signals measured on machines.

RSA密码算法的功耗轨迹分析及其防御措施论述了几种常用的振动信号分析法，如时域分析、轴心轨迹、波形分析、轨迹分析、频谱分析等。

Finally, three types of seismic response analysis methods considering multi-component multi-support seismic effects are compared. The three methods are spectrum analysis method, time history analysis method and random vibration analysis method.

最后比较了大跨度结构考虑多维多点输入的抗震计算方法，包括反应谱法、时程分析法以及随机振动分析法。

Vibration spectrum analysis of a turboprop engine in starting process

发动机起动过程的振动谱分析

The vibration spectrum predicted was compared with the observed value to be in good agreement.

预测目标产物的振动光谱，结果表明与实验值相符。

Through vibration frequency spectrum analysisof no-tillage seeder in field, its vibration characteristics were obtained.

通过对播种机的田间振动频谱分析, 得到了它的的振动特征.

The overtone vibration spectrum of water vapor by using an AlGaAs diode laser

H2O分子泛频振动谱的半导体激光检测

Based on the analysis of natural vibration character, this paper studies the seismic response of cable-stayed and self-anchored suspension bridge is analyzed by the response spectrum method and time-history method.

在自振特性分析的基础上，通过反应谱法和时程分析法计算了自锚式吊拉组合索桥的抗震反应。

The research indicated that cepstrum had notable advantage to distinguish the side frequency of the bearings vibration spectrum of paper machine press section as well as to remove the effects of the transfer function in measuring system.

研究表明，倒频谱技术在识别滚动轴承振动频谱的边频、消除系统传递函数影响等方面具有显著的优越性。

The infrared spectrum is mostly dependent on the molecular vibration and molecular structures.

红外吸收光谱主要与分子振动和分子结构有关.

Whereas it can only control vibration level, and cannot control vibration spectrum as conventional electro dynamic.

另外不足的是，它只能控制振动的量级，而不能像传统的电磁振动台一样实现振动频谱的可控。

Based on the dynamic test results and the damage of the structure, the vibration characteristic is analyzed, in addition, the theoretical analysis is implemented by methods including bottom shear method, spectrum response method and time history analysis method.

根据试验数据和强震下的破坏特征，对模型进行了动力特性分析，并采用底部剪力法、振型分解反应谱法和时程分析法对试验模型进行了理论计算。

Structure and Vibration Spectrum of Laser Crystal Yb: KGd ( WO_4)_2

Yb：KGd（WO4）2激光晶体结构与振动光谱