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Method for monitoring an electric motor and detecting a departure from normal operation

  • US 5,675,497 A
  • Filed: 05/22/1996
  • Issued: 10/07/1997
  • Est. Priority Date: 06/30/1994
  • Status: Expired due to Fees
First Claim
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1. A method for detecting a departure from normal operation of an electric motor, comprising:

  • modelling a set of normal current measurements for a motor being monitored;

    modelling a set of operational current measurements for said motor being monitored, wherein said modelling is carried out by a neural network auto-associator which is trained to reproduce its inputs on its output;

    indicating a potential failure whenever said set of normal current measurements and said set of operational current measurements differ by more than a predetermined criterion.

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