METHOD FOR IMPROVING ACCURACY OF FIBER-OPTIC GYROSCOPES UNDER VIBRATION INFLUENCE Russian patent published in 2017 - IPC G01C19/62 

FIELD: physics.

SUBSTANCE: method for improving the accuracy of fiber-optic gyroscope comprising a source of optical radiation, an optical beam divider, an integral-optical circuit, a sensing coil, a light detector, a differential current amplifier, a filter for compensating a DC component, ADC, a digital block, DAC and an operational voltage amplifier, lies in the fact that the first and the second feedback circuit formed by the auxiliary alternator phase voltage modulation code and arranged in a digital unit, comprising a howl composition demodulator of the rotation signal, the first controller and a stepped sawtooth generator, the second demodulator of the error signal, the second controller modifying the reference DAC current. In the information processing algorithm of the digital block, the third feedback circuit is used based on the third demodulator. The composition of the third feedback circuit includes a cell of the adjustable code fed to the input of the second DAC. The voltage from the DAC output is applied to the second input of the differential amplifier by changing the cell code with a regulator in order to reset the code at the output of the third demodulator.

EFFECT: increasing the accuracy of the fiber-optic gyroscope, when exposed to vibration.

5 cl, 6 dwg