| 摘要 |
PURPOSE:To repair a fault only by selecting and operating an actuator means by measuring state data and discriminating whether there is the fault or not, and reasoning the cause of the fault. CONSTITUTION:Signals from sensors 1a - 1c are inputted to a fault diagnostic pat 12 and evaluated to discriminate whether or not there is the fault and specify the fault symptoms by using fault diagnostic knowledge in an object model storage part 14. Then when it is discriminated that the device is normal, the reference value data in the storage part 14 are updated according to the supplied state data. When the fault is decided, the diagnostic part 12 retrieve parameters of the fault according to qualitative data in the storage part 14 and a fault simulation part 13 simulates the fault state. Further, the diagnostic part 12 judges the adequacy of the retrieved parameters to determine the fault symptoms and fault cause. |
