METHOD FOR DETERMINING ERRORS IN BASIC CHARACTERISTICS OF INERTIAL MEASURING DEVICE UNIT Russian patent published in 2017 - IPC G01C25/00 

FIELD: measuring equipment.

SUBSTANCE: method consists in implementing rotations of the inertial measuring device unit comprising, at least, three similar inertial measuring devices with non-coplanar sensitivity axes, with subsequent recording and processing the measurement information. In the subsequent measurement information processing at the first stage, the recalculation of the measurement information is performed from the output code for each triple non-coplanar meters into the absolute value of the physical characteristic effecting the device, by using the mathematical error model parameters of the inertial measuring device unit. At the second measurement information processing stage, the error function is drawn, determining the total deviation of the physical characteristic value obtained by using the main characteristic values of the inertial measuring device unit according to the output code, from the reference value. At the third measurement information processing stage, the mathematical error model parameters of the inertial measuring device unit are specified by minimizing the obtained error function with the multi-parameter optimisation.

EFFECT: expanding the functionality through improving the accuracy of estimating the mathematical error model parameters of the inertial measuring device unit, simplifying and accelerating the estimating process of the mathematical error model parameters of the inertial measuring device unit, reducing the restrictions on the typical provisions and reversals of the inertial measuring device unit, allowing to assess the parameters of the mathematical error model in the reduced mobility of the inertial measuring device unit.

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