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结合加速度计在重力场的试验,推导出正交双加速度计在离心机下的g2观测方程,并用总体最小二乘法进行模型辨识。仿真结果表明,正交双加速度计测试方法在离心机试验中能够消除转角误差;当系统矩阵存在小扰动时用总体最小二乘法可消除影响。从测试方法和辨识理论两方面提高了加速度计的标定精度,为高精度惯性仪表的测试提供了试验指导和理论基础。
Combined with the experiment of accelerometer in the gravitational field, the g2 observation equation of quadrature double accelerometer under centrifuge is deduced and the model is identified by the whole least square method. The simulation results show that the quadrature dipole accelerometer test method can eliminate the corner error in the centrifuge test. When the system matrix has small disturbance, the total least square method can eliminate the influence. The accelerometer calibration accuracy is improved from the test method and the identification theory, which provides experimental guidance and theoretical basis for the test of high precision inertial instruments.