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Sensing method and system for correcting an input waveform from a coded wheel

  • US 9,869,568 B2
  • Filed: 11/11/2014
  • Issued: 01/16/2018
  • Est. Priority Date: 06/26/2008
  • Status: Active Grant
First Claim
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1. A method of sensing rotation, comprising:

  • rotating a coded wheel to generate an input signal that varies with rotation of the coded wheel relative to a sensor;

    generating with the sensor a present input waveform representative of the input signal;

    comparing the present input waveform to at least one stored waveform representative of rotation of the coded wheel;

    detecting an anomaly in the present input waveform representative of a defect in the coded wheel based on the comparison; and

    correcting the detected anomaly in the present input waveform to provide a corrected input waveform in response to detecting an anomaly representative of a defect in the coded wheel.

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