基于小波包分析的冷水机组故障诊断分析  

Fault diagnosis of water chillers based on wavelet-packet analysis

作　　者：郑洁[1] 孙海军[1] 张霞[1] 

机构地区：[1]重庆大学

出　　处：《暖通空调》2007年第8期46-49,共4页Heating Ventilating & Air Conditioning

基　　金：重庆市建委资助项目(编号:城科字2003第(30)号);重庆大学骨干教师资助项目(编号:2003A45)

摘　　要：模拟了单螺杆式冷水机组的9个常见故障,选取压缩机吸气温度和压缩机排气温度作为故障诊断的特征参数,将特征参数进行小波包分解和重构,提取故障特征信号,建立了特征向量-系统状态的对应关系。Simulates nine common faults of single-screw chillers. Considers the suction temperature and exhaust temperature of the compressor as characteristic parameters, decomposes and reconstructs the characteristic parameters by wavelet-packet analysis method, extracts the signals of fault characters, and establishes the relationship between characteristic vector and system state.

关 键 词：单螺杆冷水机组 小波包分析 故障诊断 特征参数 诊断准则 

分 类 号：TU831.4[建筑科学—供热、供燃气、通风及空调工程]