SELF-DIAGNOSTIC AND SELF-REPAIRING SYSTEM FOR IMAGE FORMATION DEVICE

摘要

PURPOSE:To enable self-controlled self-diagnosis and self-repair by discriminating whether or not there is a fault and selecting and driving an actuator means for its repair. CONSTITUTION:When signals from sensors 1a - 1c are inputted to a fault diagnostic part 12, the diagnostic part 12 evaluates symbols to discriminate whether there is not the fault and specify its symptom by utilizing fault diagnostic knowledge in an object model storage part 14. In case of the fault, the diagnostic part 12 retrieves parameters of the fault according to qualitative data in the storage part 14 and a fault simulation part 13 simulates the fault state to determine the fault symptoms and fault cause. Then a repair planning part 15 reasons a repairing method to determine a repair plane and supplies control instruction developed by utilizing feature data characteristic to the device to an actuator control circuit 5 to perform repair control.