RLG SINS Dynamic Error Compensation Under Vibration Environments
https://doi.org/10.17285/0869-7035.2017.25.3.060-077
Abstract
The dither axis bending occurs in the presence of input acceleration acting on the laser block of the ring laser gyro (RLG) due to the limited transverse stiffness of the dither motor, which will cause g-sensitive misalignments under vibration environments. A novel RLG SINS dynamic error compensation method is proposed under vibration environments in this paper. G-sensitive misalignment model of the RLG unit is developed. The equivalent gyro drift model under rotation and acceleration environments is deduced to describe the dynamic error. Optimized vibration experiments are conducted to estimate the unknown parameters. Vibration experiment results prove the validity of this method.
About the Authors
L. Wang
College of Mechatronics Engineering and Automation, National University of Defense Technology (Changsha)
China
China
W. Wu
College of Mechatronics Engineering and Automation, National University of Defense Technology (Changsha)
China
China
X. Pan
College of Mechatronics Engineering and Automation, National University of Defense Technology (Changsha)
China
China
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Review
For citations:
Wang L., Wu W., Pan X. RLG SINS Dynamic Error Compensation Under Vibration Environments. Giroskopiya i Navigatsiya. 2017;25(3):60-77. (In Russ.) https://doi.org/10.17285/0869-7035.2017.25.3.060-077
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