VIBRATORY GYRO Russian patent published in 2003 - IPC

FIELD: measurement technology, vibratory gyroscopic devices designed to measure angular velocity, particular. SUBSTANCE: vibratory gyro measuring angular velocity has case, rotor unit of elastically intercoupled rotor and hub made of single silicon monocrystal, elastic suspension linking hub to case, insulation plates with electrodes and even number of magnetic systems each presenting horse shoe magnetic circuit with flat permanent magnets on ends between which flat gap is formed. Hub comes in the form of rectangular plate with base cards arranged in symmetry on both sides in its corners and in center, rotor has form of frame embracing hub with clearance over perimeter coupled to it by two elastic flat bridges placed in symmetry on both sides of hub. Rectangular insulation plates which outlines coincide with those of frame are mounted on base cards of hub in symmetry on both sides of frame with clearance. Two electrodes are formed by deposition of metal coating on internal side of each insulation plate in opposition to frame, flat coil is formed on external side of plate, over its perimeter. Hub and insulation plates are coupled to case with the use of elastic suspension which axis is perpendicular to plane of plates and passes through common center of masses of rotor unit and insulation plates. Sections of coils on insulation plates are positioned in magnetic field of gap of each magnetic system and electrodes, coils on insulation plates and hub are provided with elastic current leads for communication with servoelectronics. EFFECT: increased precision of measurement of angular velocity thanks to diminished interaction of oscillations of single-degree-of-freedom oscillatory system along oscillation axes, decreased effect of excitation system on measurement system, raised sensitivity of vibratory gyro. 5 cl, 6 dwg