Process and apparatus for attenuating linearily errors in a ring type laser rate gyro

摘要

Procedure for attenuating linearity errors in a ring type laser rate gyro 21 that uses N mirrors 28, 29, 30 arranged in such a way that the laser beams travel along two identical polygons in opposite directions, wherein at least one of the said mirrors that define the trajectory of the two laser beams is made to oscillate angularly with respect to the body of the rate gyro about an axis perpendicular to the plane defined by these two laser beams; the rotational axis of each of the oscillating mirrors preferably being as close as possible to the perpendicular to the mirror being considered that passes through the point of contact of the laser beams with the mirror in question.