捷联惯导系统加速度计标度因数和安装误差的试验标定

Calibration of Scale Factor & Installation Error Coefficients of Accelerometers in Strapdown Navigation System

研究了捷联惯导系统惯性测量组合中加速度计标度因数和安装误差的标定问题。对捷联惯性测 量组合中3路加速度计建立了输出模型,提出了在三轴转台上采用多位置试验对加速度计标度因数和 安装误差进行标定的方法。实验表明,本方法能够有效地标定出惯性测量组合中加速度计的标度因数 和安装误差,具有较高的精度,对提高捷联惯导系统的精度有着重要的作用。

Parameters calibration of output model of accelerometers in inertial measurement unit （IMU） is described. An output model is presented. Then based on this model, multi-position test is adopted to calibrate the model parameters. The calibration methods of accelerometers scale factor and the installation error coefficients are discussed. Experiment shows that these methods are effective in separating the model parameters. The approach described is of great value to engineers.