System and method for calibrating a three-axis accelerometer
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United States of America Patent
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May 6, 2014
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Oct 27, 2011
app pub date -
Jan 21, 2011
filing date -
Apr 27, 2010
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Abstract
An integrated calibration system and process for a three-axis (X, Y, Z) accelerometer estimates Z-axis bias, Z-axis bias drift and determines X, Y, and Z-axes error sources based on measurements taken when the accelerometer is static, i.e., sensing only the earth's gravitational acceleration. Optimal on-the-fly error estimates for the three-axis accelerometer are obtained so that the measurements provided by the three-axis accelerometer remain error-free.
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