公开(公告)号：EP1731857B1

公开(公告)日：2018-04-18

申请号：EP04807276.3

申请日：2004-12-17

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： YAMASHITA, Koji, Mitsubishi Denki K.K. ,  TOYOSHIMA, Masaki, Mitsubishi Denki K.K. ,  NAKATA, Hiroshi, Mitsubishi Denki K.K.

IPC分类号： G05B23/02

CPC分类号： F25B49/005 ,  F24F11/30 ,  F24F11/52 ,  F25B2400/13 ,  F25B2500/222 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/21151 ,  F25B2700/21152 ,  F25B2700/21163

摘要： A failure diagnosis apparatus for a refrigerating cycle had a problem that it has a low precision because the fluid is treated, and it is difficult to detect a foretaste of failure, absorb individual differences of real machine in the failure determination, and determine a cause of failure. Also, no cheap and practical diagnosis apparatus and method are provided. A plurality of instrumentation amounts concerning the refrigerant such as the pressure and temperature of the refrigerating cycle apparatus or other instrumentation amounts are detected, the state quantities such as composite variables are acquired by making the arithmetic operation on these instrumentation amounts, and whether the apparatus is normal or abnormal is judged employing the arithmetic operation results. If learning is made during the normal operation, a current state is judged, and if learning is made by compulsorily performing the abnormal operation, or if the abnormal operating condition is operated during the current operation, a failure foretaste such as a critical operation can be made from a change in the Mahalanobis distance. Thereby, the secure diagnosis can be implemented with a simple constitution.

公开(公告)号：EP1731857A1

公开(公告)日：2006-12-13

申请号：EP04807276.3

申请日：2004-12-17

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： YAMASHITA, Koji, Mitsubishi Denki K.K. ,  TOYOSHIMA, Masaki, Mitsubishi Denki K.K. ,  NAKATA, Hiroshi, Mitsubishi Denki K.K.

IPC分类号： F25B49/02 ,  F24F11/02 ,  G01M19/00

CPC分类号： F25B49/005 ,  F24F11/30 ,  F24F11/52 ,  F25B2400/13 ,  F25B2500/222 ,  F25B2700/1931 ,  F25B2700/1933 ,  F25B2700/21151 ,  F25B2700/21152 ,  F25B2700/21163

摘要： A failure diagnosis apparatus for a refrigerating cycle had a problem that it has a low precision because the fluid is treated, and it is difficult to detect a foretaste of failure, absorb individual differences of real machine in the failure determination, and determine a cause of failure. Also, no cheap and practical diagnosis apparatus and method are provided.
A plurality of instrumentation amounts concerning the refrigerant such as the pressure and temperature of the refrigerating cycle apparatus or other instrumentation amounts are detected, the state quantities such as composite variables are acquired by making the arithmetic operation on these instrumentation amounts, and whether the apparatus is normal or abnormal is judged employing the arithmetic operation results. If learning is made during the normal operation, a current state is judged, and if learning is made by compulsorily performing the abnormal operation, or if the abnormal operating condition is operated during the current operation, a failure foretaste such as a critical operation can be made from a change in the Mahalanobis distance. Thereby, the secure diagnosis can be implemented with a simple constitution.

摘要翻译： 制冷循环的故障诊断装置存在由于流体被处理而具有低精度的问题，难以在故障判定中检测到故障的前兆，吸收实际机器的个体差异，并且确定原因 失败。 另外，没有提供便宜实用的诊断装置和方法。 检测与制冷循环装置的压力，温度等制冷剂相关的多个仪表量，或其他仪表量，通过对这些仪表量进行算术运算，获得复合变量等状态量， 使用算术运算结果判断正常或异常。 如果在正常运行中进行了学习，则判断当前状态，并且如果通过强制执行异常操作进行学习，或者在当前操作期间操作了异常操作条件，则诸如关键操作的故障预测可以是 由马哈拉诺比斯距离的变化而产生。 由此，可以用简单的构成来实现安全诊断。