摘 要：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。研究表明‚ 流态化压力波动信号由两部分构成：其一是本质随机性信 号‚如噪音；其二是本质确定性信号。本质确定性信号又有 两种表现形式：其一是周期信号；其二是随机信号‚这种表面 随机而本质确定性的信号就是混沌信号。 

关键词：功率谱分析；R／S 分析；混沌分析；压力波动信号

Abstract：T he 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.T his research shows that signals of prseeure fluctuation can be decomposed into two parts．One is random signal‚such as noise； the other is deterministic signal‚such as periodic signaland chaos signal．Chaos signal is seeming as random aperiodic behavior and is the product of determinism． 

Keywords：power spectrum analysis；R／S analysis；chaos analy sis；signals of pressure fluctuation