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.