Calibration and Compensation Method on Installation Position Error of Tri-Axis Accelerometer Units Used in Spinning Projectiles

Viewed at the problem that the measurement points and the installation position of accelerometers don't coincide,having dynamic error at high speed,developed a dynamic error calibration method.The basic principle of the new calibration method was expounded,and the solving process of the new method was deduced,and the means of identifying and separating parameters were put forward.A general model of dynamic error calibration for accelerometer unit installation position calibration is established.This paper designed the three-axis turntable static test scheme and ground semi-physical simulation test.All the experiment results show that the present method can effectively improved the measurement accuracy of accelerometer unit and can provide accurate specific force input for the subsequent navigation measurement in engineering application.