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提出了一种基于高阶统计量进行气固流化床流化状态分析的新方法.通过对气固流化床压力波动信号的非高斯性检验,验证了压力波动信号的非高斯性,并以双谱幅值的平均值为特征值,得到了不同流化状态下压力波动信号偏离高斯分布的程度.同时利用高阶谱分析方法对压力波动信号进行分析,讨论了不同流化状态下信号的双谱特性.研究结果表明,利用高阶谱分析方法对气固流化床流化状态进行分析,可以获得更多的关于流化状态的有用信息.
A new method based on high-order statistics is presented to analyze the fluidized state of gas-solid fluidized bed. The non-Gaussianity of the pressure fluctuation signal of gas-solid fluidized bed is verified to verify the non-Gaussianity of the pressure fluctuation signal. Taking the average value of bispectral amplitude as the eigenvalue, the deviation of Gaussian distribution of pressure fluctuation signal under different fluidization conditions was obtained.At the same time, the pressure fluctuation signal was analyzed by high-order spectral analysis method, and the signal under different fluidization conditions The results show that the use of high-order spectral analysis of fluidized bed fluidized state analysis, you can get more information on the fluidized state of useful information.