METHOD AND SYSTEM FOR COMPENSATING DRIFT OF SOLID WAVE GYRO Russian patent published in 2017 - IPC G01C19/00 

FIELD: physics.

SUBSTANCE: method of compensating the drift of the solid wave gyro (SWG) includes preliminary determining the mathematical model parameters of the temperature drift rate TDR, determining the angular position of the wave resonator in the operating mode and its algorithmic compensation of the temperature drift rate in accordance with this model, the derivative value of the resonator frequency is calculated. The drift model uses the values of the angular wave position, the resonator frequency and the derivative of the frequency and is calculated as the function

where A_k, B_k - the polynomials of degree N by member f and degree M by member g; θ - the value of the angular wave position; ƒ - the resonance frequency of the solid-state wave gyro; g - the derivative value of the resonance frequency; N - the maximum degree as the function of the frequency drift value; M - the maximum degree as the function of the derivative frequency drift value; K - the number of harmonics as the function of the drift angle; the parameters a_k,i,j, b_k,_i,j are found for a particular device by means of the electrical angle value θ lifts, the rate of the electrical angle change, the resonant frequency ƒ, the derivative of the resonant frequency g for various temperatures, and the temperature change rates on the fixed base.

EFFECT: improving the accuracy and drift compensation of the solid-state wave gyro.

2 cl; 1 dwg