1) differential pressure fluctuation signal
差压波动信号
1.
For wiping off noise component from differential pressure signal of gas-liquid two-phase flow,and extracting differential pressure fluctuation signal,a signal process method of gas-liquid two-phase flow based on HHT(Hilbert-Huang Transform)was put forward.
为了去除气液两相流差压信号中的噪声成分,并提取差压波动信号,提出了一种基于Hilbert-Huang Transform(HHT)的气液两相流信号处理方法。
2.
The non-gaussian character of differential pressure fluctuation signal is picked up.
本文将高阶统计量技术引入到两相流参数检测领域,提取了差压波动信号中的非高斯特性,并利用双谱估计对气固流化床、气液两相流和油田两相流系统的流型进行了辨识,同时也在自行设计的试验装置和大庆油田测井研究所模拟井装置上进行了试验验证,取得了一些有益的结论: ●基于高阶统计量技术,提出了一种气固流化床压力波动信号分析的新方法。
2) lvds: low voltage differential signal
低电压差动信号
3) differential pressure signal
差压信号
1.
Analysis of differential pressure signal based on wavelet transform and higher-order statistics;
基于高阶统计量和小波变换的差压信号分析
2.
EMD is applied to the differential pressure signal of two-phase flow to obtain frequency components with different scales, and the normalized energy of the component is extracted as the feature of flow pattern identification.
应用EMD将差压信号分解成不同频率尺度上的单组分之和,并提取组分的归一化能量作为流型辨识特征量。
3.
Because the differential pressure signal of oil-gas two-phase flow was a typical non-stationary and multi-component signal,EMD was first applied to break up it into Intrinsic Mode Functions(IMFs) which can be divided into three frequency bands such as high-band(30~50 Hz),mid-band(5~30Hz) and low-band(0~5 Hz).
油气两相流差压信号是一典型的非平稳多组分信号,经验模态分解首先将差压信号分解成9阶本征模函数,按照频率范围可以划分为3个子带:高频带(30~50 Hz),中频带(5~30 Hz)和低频带(0~5 Hz)。
5) fluctuation signal
波动信号
1.
Determination the number of freedom degree of voidage fluctuation signals in gas-solid fluidized bed is the premise and basis for quantificationally describing the gas-solid fluidized system.
本文采用小波分析方法,将气固流化床中空隙率波动信号进行小波变换,以相空间重构和混沌分析理论为基础,通过G-P算法和Liangyuechao提出的方法计算空隙率波动信号小波系数的最小嵌套维,从而确定了气固流化床中空隙率波动信号的自由度数,并对两种确定最小嵌套维的方法进行了比较。
2.
Generally,the friction differential pressure fluctuation signal or throttle differential pressure fluctuation signal was used to analyze the property of Gas-liquid two-phase flow.
以往对差压波动信号的分析,通常是指平行于流向测得的管道的沿程压力损失或节流装置产生的压力差。
补充资料：泵额定压差
分子式：
CAS号：
性质：在泵额定工况下，其额定排出压与额定吸入压力之差。额定压差是泵性能的主要考核指标之一。
CAS号：
性质：在泵额定工况下，其额定排出压与额定吸入压力之差。额定压差是泵性能的主要考核指标之一。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条