Impacts of centrifuge closing error on the inputs of gyro accelerometer

Abstract:

To study the impacts of centrifuge’s closing error on the calibration accuracy of gyro accelerometer, the centrifuge’s attitude errors, the angular rate errors of the main axis and the earth rotation rate are studied in detail respectively, and the corresponding expressions of input specific forces and input angular rates of gyro accelerometer are derived in consideration of the existent closing error. Furthermore, combining with the actual centrifuge test of gyro accelerometer, the input specific forces and the input angular rates affected by the closing error are calculated using the given tolerances towards centrifuge errors. The results show that the requirements for the calibration accuracy are satisfied by controlling the size of closing error and choosing the proper number of revolutions of the main axis.