对床体壁面压力波动信号进行了统计、频谱及自相关性分析。
The statistics analysis, frequency analysis and correlation analysis were made with the wall pressure fluctuations signals.
结果表明：气泡是影响分选精度的重要因素，其体积分率的变化与床层密度波动密切相关。
The result shows that the bubble is an important factor influencing coal separation, and the variation of its volume fraction is closely related to the variation of density of ADMFB.
在动床河工模型试验中，需要对水位波动进行实时和自动化的测量。
In mobile bed experiments, the measurement of water level needs to be real-time and automatic.
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。
Firstly, on the gas-solid fluidized bed experimental system platform, we get all the flow pattern of the pressure fluctuation signals.
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。
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.
实验研究了流化床流型结构与压力波动的关系，测定了节涌流化床气栓和料栓内的压力波动特性。
The relationship between pressure fluctuation and flow pattern of fluidized bed is investigated experimentally. The pressure fluctuation characteristics of gas slug and particle slug are measured.
压力波动是流化床设计和操作中的重要参数，其信号包含了床内大量的流体动力学行为特征。
Pressure fluctuating is an important parameter in the design and operation of fluidized bed, the signals of which contains a lot of behavioral traits of fluid dynamics inside the bed.
压力波动是流化床设计和操作中的重要参数，其信号包含了床内大量的流体动力学行为特征。
Pressure fluctuating is an important parameter in the design and operation of fluidized bed, the signals of which contains a lot of behavioral traits of fluid dynamics inside the bed.
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