Gm Global Technolgoy Operations, Inc.

Charles S Amble

Robert H Joyce

Anil B Shrivastava

Richard W Marczewski

Atul Bajpai

Steven J Ollanik

Melissa M Marek

Nanda Kishore

A general purpose expert system architecture for diagnosing faults in any one of a plurality of machines includes a machine information database containing information on characteristics of various components of the machines to be diagnosed and a sensory input database which contains vibration data taken at predetermined locations on each of the machines. The system knowledge base contains a plurality of general rules that are applicable to each of the plurality of machines. The generality of diagnosis is accomplished by focusing on components that make up the machine rather than individual machines as a whole. The system architecture also permits diagnosis of machines based on other parameters such as amperage, torques, displacement and its derivatives, forces, pressures and temperatures. The system includes an inference engine which links the rules in a backward chaining structure.

Method and apparatus for diagnosing machines

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Prudenville, MI, United States of America

Charles S Amble