G - Physics – 01 – P
Patent
G - Physics
01
P
73/42
G01P 15/10 (2006.01) G01P 1/00 (2006.01) G01P 15/097 (2006.01)
Patent
CA 1296544
TEMPERATURE COMPENSATION OF AN ACCELEROMETER Abstract Prior vibrating beam accelerometers are subject to errors caused by differential thermal expansion between the vibrating beams and other accelerometer components. This problem is overcome by the present accelerometer that comprises a housing (32), a proof mass (30), support means (34,36) for mounting the proof mass with respect to the housing, and first and second force sensing elements (38, 40). The force sensing elements are connected between the proof mass and the housing such that differential thermal expansion or contraction between the force sensing elements and the proof mass, support means and housing results in rotation of the proof mass about a compensation axis (CA) normal to the sensitive axis (SA). The force sensing elements may extend from their respective points of connection to the proof mass in opposite directions parallel to the sensitive axis to their respective points of connection to the housing, and the force sensing elements may be connected to the proof mass at spaced apart positions on opposite sides of the compensation axis.
540688
Norling Brian L.
Riches Mckenzie & Herbert Llp
Sundstrand Corporation
Sundstrand Data Control Inc.
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