基于非线性动力学的对旋式轴流通风机运行特性研究  

Study on operating characteristics of counter-rotating axial flow fan based on nonlinear dynamics

作　　者：马丽娜[1] 李意民[1] 王树棠[2] 

机构地区：[1]中国矿业大学电力工程学院,江苏徐州221116 [2]山东齐鲁电机制造有限公司,山东济南250101

出　　处：《矿山机械》2013年第4期31-36,共6页Mining & Processing Equipment

基　　金：高等学校博士学科点专项科研基金(20110095120003)

摘　　要：对旋式轴流通风机的运行特性受结构和流体共同作用,具有复杂的非线性。运用非线性动力学方法,研究了通风机内部流动、噪声和振动信号三者的关系。研究表明,可以将失速工况的气流脉动或噪声的关联维作为通风机失速的监测指标,通过监测气流脉动信号来预测通风机运行状态更具有可行性。The structure and fluid both affect the operating characteristics of the counter-rotating axial flow fan, which leads to its complex nonlinearity. In the paper, nonlinear dynamic method was applied to study the relationship among the flow signal, noise signal and vibration signal inside the fan. The study results showed that： the airflow pulsation in stall condition or the correlation dimension of the noise could be acted as the stall monitoring indexes of the fan; it was more feasible to predict the fan operation state by monitoring airflow pulsation signal.

关 键 词：对旋式轴流通风机 非线性动力学 相空间重构 关联维 

分 类 号：TH432.1[机械工程—机械制造及自动化]