G - Physics – 01 – P
Patent
G - Physics
01
P
G01P 15/00 (2006.01) G01C 19/56 (2006.01) G01P 3/00 (2006.01) G01P 3/22 (2006.01) G01P 15/097 (2006.01) G01P 15/10 (2006.01) G01P 15/18 (2006.01)
Patent
CA 2151232
A triaxial sensor substrate is adapted for use in measuring the acceleration and angular rate of a moving body along three orthogonal axes. The triaxial sensor substrate includes three individual sensors that are arranged in the plane of the substrate at an angle of 120 degrees with respect to one another. Each sensor is formed from two acclerometers having their sensing axes canted at an angle with respect to the plane of the substrate and further being directed in opposite directions. The rate sensing axes thus lie along three orthogonal axes. in order to to reduce or eliminate angular acceleration sensitivity, a two substrate configuration may be used. Each substrate includes three accelerometers that are arranged in the plane of the substrate at an angle of 120 degrees with respect to one another. The sensing axes of the accelerometers of the first substrate are canted at an angle with respect to the plane of the first substrate toward the central portion thereof so that they lie along three skewed axes. Similarly, the sensing axes of the accelerometers of the second substrate are canted at an angle with respect to the plane of the second substrate away from the central portion thereof so that they lie along same three but oppositely directed axes. The sensing axes of the first and second substrates are aligned to prevent angular acceleration sensitivity.
Alliedsignal Inc.
Gowling Lafleur Henderson Llp
LandOfFree
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