Excavating
Patent
1990-09-26
1992-11-24
Atkinson, Charles E.
Excavating
3642763, 3642819, 364DIG1, 371 151, 395916, G06F 1100, G01R 3128
Patent
active
051669340
ABSTRACT:
A system according to the invention has a plurality of sensors, a system control circuit and a plurality of actuators. State data, supplied from the sensors, is compared with characteristic data in the system control circuit. From this comparison, it is judged whether a fault has occurred depending upon whether the state data is relatively lower or higher. If a fault has occurred, fault inference fault is made on the basis of a comparison between qualitative data and fault diagnosis knowledge which are stored in the system control circuit. Then a judgement is made as to which of the elements in an image forming apparatus is abnormal. An actuator operating signal thereafter is generated as a result of this judgement.
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Ishii Yoshifumi
Kusumoto Hiroshi
Shimomura Yoshiki
Tomiyama Tetsuo
Umeda Yasushi
Atkinson Charles E.
Mita Industrial Co. Ltd.
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