METHOD COMPENSATING FOR INERTIAL ERROR OF GYROSCOPIC COMPASS WHILE VESSEL IS MANEUVERING AND GYROSCOPIC COMPASS FOR ITS REALIZATION Russian patent published in 1999 - IPC

FIELD: design and updating of sea gyroscopic compasses. SUBSTANCE: voltages across windings of upper and lower stators of electromagnetic suspension of rotor of gyroscope are measured after turn of principal axis of gyroscope to the north. Acceleration components acting along axes of suspension of rotor are determined. Then horizontal A_X′ and vertical A_Z′ components of acceleration acting on base of acceleration gyroscope are found. Northern component a of acceleration is found from expression a = (a2X

+a2Z′-g²)^1/2.. Two-degree-of-freedom magnetospheric gyroscope and horizon indicator are put on platform anchored in gimbal suspension. Course transmitter and receiver of vessel speed are mounted on axis of azimuthal stabilization system. Gyroscopic compass also has computer, unit generating acceleration components, unit compensating for inertial error, adder and amplifiers-converters. Unit compensating for inertial error carries out scaling of northern acceleration component to output signal of horizon indicator in first variant of gyroscopic compass or to output signal of course transmitter in second variant of gyroscopic compass. EFFECT: enhanced accuracy of gyroscopic compass during maneuvering of vessel by compensation for false signal of horizon indicator without use of external information. 5 cl, 6 dwg