关键词: 加速度计, 自旋修正系数, 标定方案, 角运动误差, 数学模型, 系数定义

Abstract:

To choose a right scheme for calibrating the spin correction coefficient of an accelerometer used in a high speed rotation environment， two calibration schemes are analyzed founded on the definition of the spin correction coefficient and the model of the accelerometer. At first， the principle of calibrating spin correction coefficient is summarized according to military standards. Then calibration models are established corresponding to the two calibration schemes， and compared with the expression of spin correction coefficient on the base of its definition. The analysis results show that if calibration is carried out based on the definition of the spin correction coefficient， the two schemes proposed in the national military standards are not equivalent. The scheme which needs the accelerometer rotates around its input axis cannot be employed to calibrate the spin correction coefficient while the other scheme， which uses the accelerometer rotates about the angular bisector of the input axis and pendulous axis can do the work.

Key words: accelerometer, spin correction coefficient, calibration scheme, angular motion error, mathematical model, definition of coefficient