Pressure difference fluctuation is employed to identify flow pattern and pressure difference fluctuation signals of various flow pattern are obtained.
采用压差波动法测定流型，获得了不同流型下的压差波动信号。
The properties and components of pressure fluctuation signals in gas solid fluidized bed was dissected quantitatively by using power spectrum analysis, R/S analysis and chaos analysis.
应用功率谱分析、R/S分析、混沌分析等对气固流化床压力波动信号的性质、组成进行了定量解剖。
Accordimg to the results of wave form and frequency domain analyses of pressure fluctuation signals, characteristics of pressure fluctuation at different space locations were discussed.
根据压强脉动信号波形和频域的分析结果，研究了三相流化床不同空间位置压强的脉动特征。
Firstly, on the gas-solid fluidized bed experimental system platform, we get all the flow pattern of the pressure fluctuation signals.
首先，在气固流化床实验系统台上，获取各流型的压力波动信号。
In this paper the statistical simulation method is used to extract the fault features of engine parts and fuel system from corresponding engine sound and oil pressure fluctuation signals.
运用统计模拟的方法，提取发动机信号的故障特征，并给出这些特征值的置信区间，实现了故障的定量诊断。
In this paper the statistical simulation method is used to extract the fault features of engine parts and fuel system from corresponding engine sound and oil pressure fluctuation signals.
运用统计模拟的方法，提取发动机信号的故障特征，并给出这些特征值的置信区间，实现了故障的定量诊断。
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