The problem of calibration of a three-axis acceleration sensor is considered. A number of measurements obtained with the sensor at its different orientations in space are used as initial data for calibration. It is assumed that the sensor is stationary for each orientation variant. The measurement data are averaged at each static sensor position, and the averaged results are used as parameters in a system of nonlinear equations that are solved by the Levenberg-Marquardt method. The results of the proposed method in the article are presented in the experiment with a real sensor, which allows to check its effectiveness.

Keywords: three-axis accelerometer sensor calibration, the sensor coordinate system, the coordinate system of the gravitational field, the rotation of the coordinate system, the matrix of coordinate transformation, the correction factor, the average value of the me