Fault diagnosis arrangement for industrial machines - has memory holding search tree corresp. to hardware orgnaisation of tested equipment, fault probability table, and inference device

摘要

The fault diagnosis arrangement includes a detector (5a,5b) of parameters of a tested equipment (6) and a memory (1,4) contg. a search tree with nodes corresp. to sub-units of the tested equipment and test tables (2) associated with each node. Each table contains a description of at least one parameter to be detected and an associated test condition. A fault probability table contains fault probabilities and names of daughter nodes corresp. to test condition results. A search inference device locates the origin of a defect according to the search tree and test tables. ADVANTAGE - Conducts two or more tests simultaneously and locates origin of fault from three or more origins. Diagnosis is performed highly efficiently.