摘要
应用功率谱分析法、R/S分析法及混沌分析法对大颗粒循环流化床压力波动信号的性质和组成进行了研究。功率谱分析法和R/S分析法从两个不同的角度均得出了压力波动信号中存在一定的周期成分,而混沌分析得出的关联维和K熵进一步证实了压力波动信号表面上是随机的.但实质上具有确定性,即表明大颗粒的气液固三相循环流化床的压力波动信号具有混沌信号的特征。
The properties and components of pressure fluctuation signals in coarse circulation fluidized bed was researched by power spectrum analysis, R/S analysis and chaos analysis. Periodic signal was found existing in pressure fluctuation by power spectrum analysis and R/S analysis and pressure fluctuation was confirmed to be random periodic behavior in appearance but certain in fact by correlation dimension and Kolmogorv entropy obtained by chaos analysis. In other words, the pressure fluctuation signal in coarse circulation fluidized bed with big particles had chaos characteristic.
出处
《化学反应工程与工艺》
EI
CAS
CSCD
北大核心
2007年第4期302-308,共7页
Chemical Reaction Engineering and Technology
关键词
功率谱分析
R/S分析
混沌分析
压力波动信号
大颗粒循环流化床
power spectrum analysis
R/S analysis
chaos analysis
signals of pressure fluctuation
three-phase circulation fluidized bed
