本文运用涨落复杂性对气固流化床压力脉动时间序列进行分析 ,其优点是算法和混沌参数如最大 L yapunov指数相比更为简洁。实验研究了该参数随操作气速和床层高度的变化趋势 ,并比较了涨落复杂性在不同轴向位置的分布 ,从复杂性理论的角度对流化床的内在规律性进行了初步探讨 In this paper, the fluctuating complexity is used to analyze the pressure pulsation time series of gas-solid fluidized bed. The advantage of this method is that the proposed algorithm is more concise than the maximum L yapunov exponent for chaotic parameters. The variation tendency of the parameter with the operating gas velocity and the bed height was experimentally studied, and the distribution of fluctuation complexity at different axial positions was compared. The internal regularity of the fluidized bed was discussed from the perspective of complexity theory