METHOD OF ALGORITHM COMPENSATION OF ERROR OF GYROCOMPASSING BY MEANS OF ANGULAR-RATE SENSOR

摘要

FIELD: precision instrumentation engineering; manufacture of gyrocompasses and course-indicating unit of analytical type. SUBSTANCE: sensitive axes of gyrocompass are related to axes of object. Gyroscope is used in feedback coupling by torque generator current and signals from reference resistors of angular-rate sensors are determined. Then, coefficients of gyroscope drift model are determined and errors of gyrocompassing are found for six spatial positions of gyroscope when bearing angle is equal to 0 deg. and 270 deg. and plane of sensitive axes is horizontal or is inclined only in pitching or in rolling. Latitude of position of object , angles of inclination of plane of gyroscope sensitive axes in pitching and rolling are found in working mode and algorithm compensation of gyroscope drift is performed. Then, algorithm compensation of gyroscope drift is performed and algorithm compensation of error is determined as analytic expression using magnitudes of uncorrected true bearing angle, errors of gyrocompassing at six positions and angles of inclination at preliminary determination of latitude of position and angles of inclination of object at gyrocompassing. EFFECT: enhanced accuracy. 2 dwg