×

SYSTEM FOR DETERMINING MACHINE RUNNING SPEED FROM MACHINE VIBRATION: APPARATUS AND METHOD

  • US 20040158416A1
  • Filed: 02/07/2003
  • Published: 08/12/2004
  • Est. Priority Date: 02/07/2003
  • Status: Active Grant
First Claim
Patent Images

1. - A method for determining running speed of a machine from a complex vibration signal outputted by a transducer monitoring machine vibration, the steps including:

  • sampling and digitizing a complex vibration signal into a digitized vibration signal;

    digitally mixing the digitized vibration signal with a digitized signal having a predetermined frequency for obtaining a mixed signal comprised of a stream of inphase and quadrature components;

    transforming the stream of inphase and quadrature components into at least one phase per second value;

    determining a signal frequency of a vibration component contained in the complex vibration signal as a function of at least the one phase per second value, and calculating machine running speed as a function of the determined signal frequency for use in correlating machine vibrations to physical phenomena that generated them.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×