WEI Tong, FANG Jian-cheng. Proof-phase-margin design of nutation cross-feedback control in magnetically suspended high-speed rotor system with large rotary inertia[J]. Optics and precision engineering, 2007, 15(6): 858-865.
WEI Tong, FANG Jian-cheng. Proof-phase-margin design of nutation cross-feedback control in magnetically suspended high-speed rotor system with large rotary inertia[J]. Optics and precision engineering, 2007, 15(6): 858-865.DOI:
A parameter design method of nutation cross-feedback control is investigated. Based on nutation stability analysis of a large-inertia and high-speed rotor using two-frequency Bode diagram
a new proof-phase-margin method of cross-feedback parameter design based on two-frequency Nyquist contour is proposed. The proportional coefficient and High-pass Filter (HPF) cutoff frequency of cross-feedback are determined by vectors combination to accomplish the robust design of nutation stability. Utilizing designed cross-feedback controller
nutation stability of rotor in the magnetically suspended control moment gyroscope is significantly improved and the critical speed of rotor increases from 10 500 r/min to 20 040 r/min. It can be concluded that the proposed method is effective for cross-feedback parameter design
which provides important foundation for rotor suspension stability of control moment gyroscope and momentum flywheel.