| 摘要 |
PURPOSE:To perform the correct presumption for the cause even in the course of the fault, by searching fault cause group A which minimizes the valuation function with the time elapsed since occurrence of the fault used for the variable. CONSTITUTION:Data process part 31 decides whether the observation signal group is under the alarm state or not in order to produce observation pattern Z. Analysis part 32 operates on trigger signal TG1 given from part 31 or trigger signal TG2 obtained by the demand of the operator and then delivers presumed cause A by means of causal relation tree CCT stored in memory device 33 plus observation pattern Z. Cause A is displayed at the display part through the method in which the display color is changed at the area of the cause node on the display screen of the CCT. The CCT memorizes the types of the nodes, the destination node of X and the set of the slave nodes of X each with every node X of the CCT. As model pattern R0(A) obtained at model pattern producing part 2 is the pattern which corresponds to the final form of the fault, pattern R(A, t1) of optional time step T1 is produced based on pattern R0(A). |
