Diagnosing method of plant
专利汇可以提供Diagnosing method of plant专利检索，专利查询，专利分析的服务。并且PURPOSE:To discriminate quickly the cause by which an abnormality has been generated, by executing automatically and simultaneously a learning and a diagnosis by a pattern vector having the highest sensitivity with respect to an unknown abnormality of a plant. CONSTITUTION:When a diagnosis start command of a nuclear power plant is given, its various statistical quantities are brought to a fast Fourier transform and analysis as one block at a time interval DELTAt, and also a statistical quantity Yi is calculated as an average of its N block. Subsequently, a sample pattern vector Xi is constituted by setting an initial condition, and a state Ki is determined by calculating a reference vector of the same constitution, which has been learned by a trial of said vector and a state K. Also, an RMS value of a frequency component of the outside of an area is calculated, and a distance between this logarithmic converting value and a value in a normal state is calculated, and a proportion to a threshold level is decided. A plant state Ko is determined by repeating said procedures, and at the time of an abnormal state, a new pattern vector is constituted, it is made a new reference data set, an alarm is raised, also a display is outputted and the diagnosis is ended.，下面是Diagnosing method of plant专利的具体信息内容。
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