noise pattern

The noise spectrums of a ball mill under the different functional modes have detected and anlysedin this paper .

本文对球磨机在不同工作状态下的噪声频谱进行了测定和分析,获得了噪声频谱和磨机工作状态参数的定量关系,真实地反映了磨机的工作状态,为建立其数学模型,实现磨机的自动控制,达到节能高产的目的提供了依据。

The noise spectrum is the curve of all kinds of the noise frequencies.

噪声是发电机运行时存在的一种物理现象,它间接地反映了发电机的运行情况,而噪声频谱可以通过测试各种频率下噪声级数值而绘制的噪声曲线来表示。

Aerodynamic noise and noise frequency spectrum on skewed-swept rotor blades are measured in rotating stall.

测量了轴流式弯掠动叶和径向动叶在旋转失速工况下的气动噪声和噪声频谱，实验结果表明：弯掠动叶能够降低气动噪声。

However, the nonuniformly sampling exists the noise in spectrum analysis, so it’s difficult to estimate the low amplitude signals.

最小二乘法则可解决由于非均匀采样带来的频谱噪声问题,逐次消除检测出的大幅值信号,从而检测出幅值较小的间谐波信号,并准确估计出间谐波的幅值和相位。

This paper uses the method of noise spectrum analysis to analyze the enterprise noise of ferroalloys.

运用噪声频谱分析方法对铁合金企业噪声进行了分析。

The method for fan? s fault diagnosis by using noise frequency spectrum was described.

探讨利用噪声频谱进行风机故障诊断的方法。

A Cluster Analysis of Spectrum of Industrial Noise in 9 Industry Workplaces in A City

某市9行业作业场所噪声频谱的聚类分析

DResearch on Measuring Ball Mill Loads Apparatus Based on Analyzing Noises Frequent Bands

基于噪声频谱的磨煤机负荷测量仪研究

Experimental research on noise frequency spectrums of internal combustion engine power station and the noise reduction measures

中、小型内燃机电站噪声频谱试验研究及降噪措施

Research of Noise Spectrum Characteristics of Traction Motor System for Electric Vehicle

纯电动汽车用电动机系统噪声频谱特性实验研究

Spectrum Feature of Step Signal with White Noise and Method of Noise Reducing

含白噪声阶跃信号的频谱特性及去噪分析

The Implementation Of Phase Noise Measurement Using a Spectrum Analyzer

直接频谱仪法在相位噪声测试中应用

The investigation of relations between low-frequency noise subjective sensation and spectrum characteristics

低频噪声主观感知与频谱特征关系研究

Waveform simulation of low frequency line spectrum on propeller cavitation noise

舰船螺旋桨空化噪声低频线谱波形仿真

Random Noise Influence on Spectrum Correcting Methods and Exactly Estimate Small Damping of a Structure;

随机噪声对频谱校正精度的影响和结构小阻尼的精确估计

A torpedo motional noise simulated method base on frequency spectrum sampling arithmetic

基于频谱取样算法的鱼雷运动噪声仿真生成方法

Design of Noise Source Analyzer for Industrial Compressor Based on Frequency Spectrum and Wavelet Transform

基于频谱与小波变换的工业压缩机噪声源分析仪设计

The differentiation and extraction for the helicopter noise based on the two-dimensional spectral analysis

基于二维频谱方法的直升机噪声源的分辨与提取

frequency modulation noise level on carrier

载波的调频噪声电平

transistor low-frequency noise-meter

晶体管低频噪声测试仪

A STUDY OF THE SPIKES FOR AN FM SYSTEM--A NEW NOISE MODEL

调频接收尖峰噪声的研究——一种新的噪声模型

Indentifying and suppression of low frequency noise from the rotary compressor

旋转压缩机低频噪声源识别及噪声抑制