SYSTEM AND METHOD OF SENSING ATTITUDE AND ANGULAR RATE USING A MAGNETIC FIELD SENSOR AND ACCELEROMETER FOR PORTABLE ELECTRONIC DEVICES
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United States of America Patent
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Issued Date -
Dec 15, 2011
app pub date -
Jul 28, 2011
filing date -
Jul 10, 2006
priority date (Note) -
Abandoned
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Abstract
A system for determining motion information including attitude and angular rate of a dynamic object. The system includes a magnetic-field sensing device to measure in the body coordinate frame of reference an intensity and/or direction of a magnetic field in three substantially orthogonal directions; an acceleration-sensing device adapted to measure total acceleration of the object in the body coordinate frame of reference; and a processor adapted to calculate attitude and angular rate by combining total acceleration measurement data and magnetic field measurement data with the kinematic model in a filter.
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