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Method and Encoder

  • US 20110247415A1
  • Filed: 04/11/2011
  • Published: 10/13/2011
  • Est. Priority Date: 04/09/2010
  • Status: Active Grant
First Claim
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1. A method for determining at least one parameter related to a type of vibration for an encoder mounted on an axis and arranged to detect rotary movement of the axis, an element fixed at the encoder arranged to prevent the encoder from rotating with the axis, comprising:

  • generating at least one signal in response to an acceleration in a direction in a point of the encoder;

    determining at least one frequency spectrum related to the signal;

    fitting at least one expression related to the signal based on the frequency spectrum, each expression describing an acceleration related to the direction and the point of the encoder; and

    determining at least one parameter from the expression, each parameter related to a type of vibration for the encoder.

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