Method and device for determining the absolute angle of rotation of an object that is rotating about an approximately horizontal rotational axis
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United States of America Patent
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Jan 20, 2004
Issued Date -
N/A
app pub date -
Jun 17, 2002
filing date -
Dec 16, 1999
priority date (Note) -
Expired
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Abstract
A method for determining an absolute rotational angle of an object that is rotating about an approximately horizontal rotational axis, includes steps of: determining a change in a rotational angle of the object occurring during a time interval; determining an acceleration component acting in a direction of a vertical axis of the object; determining a change, occurring during the time interval, in the acceleration component acting in the direction of the vertical axis of the object; and calculating the absolute rotational angle of the object from the change in the rotational angle and the change in the acceleration component acting in the direction of the vertical axis of the object. A device constructed to perform the method does not necessarily require expensive, high-stability acceleration sensors. Sensors of a simple design can be used instead.
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