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DIFFERENTIAL HAPTIC GUIDANCE FOR PERSONAL NAVIGATION

  • US 20160258758A1
  • Filed: 08/12/2014
  • Published: 09/08/2016
  • Est. Priority Date: 06/27/2005
  • Status: Active Grant
First Claim
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1. A system for measuring the rotational position of a rotating shaft, the system comprising:

  • a field source configured to generate a measurable field;

    a sensor configured to measure the generated field;

    a target that is configured to modify the generated field as measured by the sensor to have a shape with (a) at least one measurable feature for a zero reference point, and (b) a shape that varies throughout one or more angles such that a rotational position of the shaft is determined with a selected angular accuracy;

    means for receiving a query for the rotational position of the shaft; and

    means for responding to the query for the rotational position of the shaft.

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