초록 ▼

In a method for determining a remaining lifetime of an aggregate constructed of a plurality of components and having at least one function, and an apparatus thereof, a first remaining lifetime of the aggregate is acquired based upon experimental aging degradation data on one characteristic of at lea

In a method for determining a remaining lifetime of an aggregate constructed of a plurality of components and having at least one function, and an apparatus thereof, a first remaining lifetime of the aggregate is acquired based upon experimental aging degradation data on one characteristic of at least one component of the aggregate; a second remaining lifetime of the aggregate is acquired based upon experimental aging data with respect to at least one function of the aggregate; a third remaining lifetime of the aggregate is acquired based on both the experimental aging degradation data on the one characteristic of at least one component of the aggregate and the experimental aging data on at least one function of the aggregate; and, a remaining lifetime having the shortest lifetime from the first through third remaining lifetimes is output as the remaining lifetime of the aggregate.

대표청구항 ▼

An expert system for diagnosing a remaining lifetime (L) of an apparatus included in a plant and selecting an apparatus to be inspected, said expert system comprising: an external system interface for taking history data of the plant under on line operation from an external sensor; a terminal system

An expert system for diagnosing a remaining lifetime (L) of an apparatus included in a plant and selecting an apparatus to be inspected, said expert system comprising: an external system interface for taking history data of the plant under on line operation from an external sensor; a terminal system for taking data including knowledge data through an input/output apparatus; a user interface connected to said external system interface and said terminal system; a data base connected to said user interface for managing data including the history data supplied from said external system interface and said terminal system via said user interface; a knowledge acquire support apparatus connected to said user interface for receiving the knowledge data from said terminal system via said user interface; a knowledge base connected to said knowledge acquire support apparatus for storing the knowledge data supplied from said knowledge acquire support apparatus; and an inference apparatus connected to said knowledge base and said data base for diagnosing the remaining lifetime (L) of an apparatus of the plant based on said data including the history data and the knowledge data respectively stored in said data base and said knowledge base; wherein said terminal system takes two kinds of data including: function test data which is acquired in a function test of a constructive apparatus of the plant during a periodical check and is stored in said data base every time the periodical check is carried out, and parts degradation characteristic data which is acquired in an accelerated lifetime test of parts of the constructive apparatus or materials of the plant and is stored in said data base, wherein knowledge data is obtained from specification of the constructive apparatus and parts, performance, and maintenance information, or from past experience of experts concerning preventive maintenance work.