Relationship between Calibration Accuracy of Error Model Coefficients of Accelerometer and Errors of Precision Centrifuge

In this paper,error sources of the precision centrifuge are analyzed at first,and a homogeneous transformation method is used to accurately calculate the centripetal acceleration,as well as components of the centripetal acceleration,the acceleration of gravity,and the Coriolis acceleration in the input,the output and the pendulum axes of the tested accelerometer.Then the error model of quartz pendulous accelerometer to be tested on the centrifuge is given,the calculated specific forces acting on three axes of the accelerometer are substituted into the error model,then the relationship between the calibration errors and the errors of the centrifuge is established.Finally,the correspondences between the calibration accuracy of each error model coefficient of accelerometer and some error sources of centrifuge are determined by using simulation results,thus laying a theoretical foundation for the determination of centrifuge accuracy according to the demand for calibration accuracy of accelerometer.