| Citation: | YANG Yang, WANG Weijie, WANG Zhou, et al. Momentum envelope analysis of magnetically suspended control sensitive gyroscope[J]. Journal of Beijing University of Aeronautics and Astronautics, 2022, 48(10): 2061-2069. doi: 10.13700/j.bh.1001-5965.2021.0071(in Chinese)
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Aiming at engineering application problems, the multi-degree-of-freedom angular momentum envelope model of magnetically suspended control and sensing gyroscope (MSCSG) is studied. Based on the mechanical structure of MSCSG, the characteristics of radial universal deflection of magnetic suspension rotor are analyzed. Axial 1-DOF Flywheel torque and radial 2-DOF gyroscope torque output mechanism of MSCSG are clarified. Based on the Lorentz force magnetic bearing (LFMB) principle, the linear relationship between the radial deflection torque and the control current is analyzed, which reveals the advantages of the MSCSG torque with high precision, high bandwidth and small amplitude. Considering rotor speed saturation, the MSCSG angular momentum envelope model is constructed based on deflection reconstruction and rotation matrix. The simulation shows that although radial deflection torque has a high bandwidth, small amplitude, and axial flywheel torque has a high precision and large magnitude. High bandwidth performance test of the MSCSG deflection torque is carried out, showing that MSCSG can output radial deflection torque whose frequency is greater than 100 Hz. It is shown that MSCSG has the prospect of strong micro-vibration suppression under high dynamic conditions and high precision attitude control.
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