| Citation: | YU Chunmiao, WANG Zhou, REN Yuan, et al. MSCSG attitude measurement method based on inverse system decoupling[J]. Journal of Beijing University of Aeronautics and Astronautics, 2020, 46(1): 150-158. doi: 10.13700/j.bh.1001-5965.2019.0132(in Chinese)
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Magnetically suspended control and sense gyroscope (MSCSG) is a new type of gyroscope which combines attitude control and attitude measurement functions and uses Lorentz force magnetic bearings (LFMBs) to drive the rotor to tilt. To solve the problem of coupling between two measuring axes of MSCSG, a measurement method based on inverse system decoupling is presented. First, the basic structure of MSCSG composition was analyzed. Then, the LFMB-rotor system dynamics model was established based on the basic structure of MSCSG composition. The principle of MSCSG for two-degree-of-freedom attitude measurement was deduced and the coupling between two measuring axes of MSCSG was analyzed. The inverse system is used to decouple two measuring axes of MSCSG. Finally, the effectiveness of the proposed method is verified by simulation. The simulation results show that the coupling effect between the two measuring axes of MSCSG is restrained well and the measurement accuracy is improved.
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