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Method for initializing position with an encoder

  • US 20030222798A1
  • Filed: 06/03/2002
  • Published: 12/04/2003
  • Est. Priority Date: 06/03/2002
  • Status: Active Grant
First Claim
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1. A method for detecting an absolute rotational position of an electromechanical device or at least one component thereof comprising:

  • using a pair of signals to determine a relative position of the electromechanical device or the at least one component thereof from a starting point;

    obtaining a commutation index signal;

    determining a first absolute position of the electromechanical device or the at least one component thereof based on the commutation index signal;

    obtaining a Z-index signal; and

    determining a second absolute position of the electromechanical device or the at least one component thereof based on the Z-index signal.

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