High precision on-line error compensation method for drift error of gyro with suspension rotor

The invention relates to a high precision on-line error compensation method for drift error of gyro with suspension rotor. Based on the rigid body dynamics basic principle, a gyro disturbed torque model is established; based on an axial direction Lorentz force magnetic bearing, a high precision anal...

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Bibliographic Details
Main Authors REN YUAN, WANG WEIJIE, XIN CHAOJUN, XIA CHANGFENG, YAO HONG, CAI YUANWEN, XU GUOFENG
Format Patent
LanguageEnglish
Published 09.12.2015
Subjects
GYROSCOPIC INSTRUMENTS
MEASURING
MEASURING DISTANCES, LEVELS OR BEARINGS
NAVIGATION
PHOTOGRAMMETRY OR VIDEOGRAMMETRY
PHYSICS
SURVEYING
TESTING
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Summary:The invention relates to a high precision on-line error compensation method for drift error of gyro with suspension rotor. Based on the rigid body dynamics basic principle, a gyro disturbed torque model is established; based on an axial direction Lorentz force magnetic bearing, a high precision analytical expression of compensating torque is established; real time on-line measurements of gyro rotor corner and Lorentzen coil excitation current by displacement and current sensors are combined, thereby realizing high precision real time on-line compensation of the compensating torque to the disturbed torque. The invention belongs to the field of aerospace measurement and control technology, and is applied to high precision satellite attitude measurement and optimization design, measurement and calibration of the ground gyro.
Bibliography:Application Number: CN20151564942