{Reference Type}: Journal Article
{Title}: Calibration of triaxial accelerometers by constant rotation rate in the gravitational field.
{Author}: Gaitan M;Geist J;
{Journal}: Measurement (Lond)
{Volume}: 189
{Issue}: 0
{Year}: Feb 2022
{Factor}: 5.131
{DOI}: 10.1016/j.measurement.2021.110528
{Abstract}: We extend the use of the intrinsic properties calibration method for triaxial accelerometers that we reported previously from discrete angular steps to using a constant rotation rate to produce a time varying sinusoidal excitation in the earth's gravitational field. We show that this extension yields the low frequency calibration response of the device under test. Whereas traditional vibration-based methods using shakers generally exhibit an increased measurement uncertainty with decreased excitation frequency, we show that this approach does not. We report results obtained from a commercial triaxial digital accelerometer from DC up to a 0.5 Hz rotation rate. The maximum rotation rate that we report is limited by our rotation stage; but we expect that the method can be extended to higher rotation rates with an upper limit constrained by what can be tolerated as a maximum centripetal acceleration.