Identification of Flow Regime of Gas-Solid Fluidized Bed Based on Arma Model of Pressure Fluctuation Signals

摘要

Pressure fluctuation signals of gas-solid fluidized bed are analyzed. ARMA model, a model of time-series analysis, is used in the identification of the flow regimes of gas-solid fluidized bed. ARMA models of the signals are constructed, and their order n and in are identified subsequently according to the criterion of self-correlation coefficient. Experimental results show that ARMA model order n of bubbling bed is greater than that of turbulent bed According to the results, flow regime can be identified.