Diagnostic system using pattern recognition for electronic automotive control systems
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United States of America Patent
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-
Aug 20, 1991
Issued Date -
N/A
app pub date -
Aug 28, 1989
filing date -
May 18, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A system is disclosed for diagnosing faults in electronic control systems wherein a large volume of information is exchanged between the electronic control processor and a mechanical system under its control. The data is acquired such that parameter vectors describing the system operation are formed. The vectors are provided to a pattern recognition system such as a neural network for classification according to the operating condition of the electronically controlled system. For diagnosis of electronically controlled engine operation, the parameters included in the vectors correspond to individual firing events occurring in the engine operating under a predetermined condition. The diagnostic system can be implemented as a service tool in an automotive service bay or can be implemented within the on-board electronic control system itself.
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