METHOD FOR CALIBRATING ERRORS OF CARDANLESS INERTIAL SYSTEM ON ELECTROSTATIC GYROSCOPES UNDER CONDITIONS OF ORBITAL FLIGHT Russian patent published in 2019 - IPC G01C19/24 

FIELD: instrument engineering.

SUBSTANCE: invention relates to gyroscopic equipment, and in particular to methods for calibrating the errors of a cardanless inertial system on electrostatic gyroscopes in the conditions of flight of a spacecraft. This method for calibrating the errors of a cardanless inertial system on electrostatic gyroscopes under orbital flight conditions, according to which, when an object moves along an orbital trajectory, it is rotated sequentially around the axes associated with the body, simultaneously the signals from an external reference device are measured, for example, an astrovising device, as well as the signals of electrostatic gyro angle sensors, the accuracy of the system is determined, the values of the model coefficients characterizing the “bindings” of the measuring axes of the gyroscopes relative to the axes of the reference device, the refined values of the coefficients characterizing the departure of the gyroscopes are determined, the coefficients of the model set in the Kalman filter are replaced with their refined values, repeated measurements of signals are performed, determination of the system error and determination of the refined values of the coefficients of the model and with their sequential replacement in the filter, the values of the coefficients with the minimum value of the system error are recorded. Then, the coefficients of the model, which characterize the "binding" of the measuring axes of the gyroscopes relative to the axes of the reference device, are calculated with an increased speed of rotation of the object, by comparing the orientation parameters of the measuring axes of gyroscopes with the orientation parameters of the axes of the reference device, and the coefficients of the model, which characterize the departure of gyroscopes, are determined after introducing certain model coefficients, which characterize the “bindings” into the Kalman filter as constant values.

EFFECT: improving the accuracy of calibration of the coefficients of the error model of a cardanless inertial system.

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