Control device and diagnosis system
AssigneeHitachi, Ltd.
InventorsMasahiro MATSUBARA, Shinji NAKAGAWA
Life of this patent
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Abstract
The purpose of the present invention is to provide a control device and a diagnosis system, with which a more reliable diagnosis can be achieved while taking advantage of respective characteristics of rule-based diagnosis and learning-based diagnosis. The present invention is equipped with: a first diagnosis unit for diagnosing a control function with use of output data from the control function in accordance with predetermined rules; a second diagnosis unit for diagnosing the control function with use of the output data in accordance with rules which are mechanically learned on the basis of the output data; and a comparison unit for comparing diagnosis results of the first and second diagnosis units with each other.
Claims7
A control device comprising:
- a first diagnosis unit for diagnosing a control function with use of output data from the control function in accordance with predetermined rules;
- a second diagnosis unit for diagnosing the control function with use of the output data in accordance with rules which are mechanically learned on the basis of the output data;
- and
- a comparison unit for comparing diagnosis results of the first and second diagnosis units with each other.
A diagnosis system comprising:
- a first diagnosis unit for diagnosing a control function with use of output data from the control function equipped in a control device in accordance with predetermined rules;
- a second diagnosis unit for diagnosing the control function with use of the output data in accordance with rules which are mechanically learned on the basis of the output data;
- a result comparison unit for comparing diagnosis results of the first and second diagnosis units with each other and extracting non-identical diagnosis results;
- and
- a diagnosis rule update unit for updating at least the rules of the first diagnosis unit on the basis of the diagnosis result extracted in the result comparison unit.
Dependencies are inferred from the claim text.