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Optimization design of magnetic suspended gyroscope rotor

HAN Bang-cheng~1,HU Gang~2,FANG Jian-cheng~1(1.Beijing University of Aeronautics &Astronautics,Beijing 100083,China;2.Beijing Institute of Control Engineering,Beijing 100080,China)  
The structure of a Control Momentum Gyroscope(CMG) was introducecl,in which gyroscope rotor with the rating rotation speed of 20,000 r/min and rating angular momentum of 200 N·ms is supported by permanent bias active magnetic bearing.The software of multidisciplinary design optimization(iSIGHT) and the software of Finite Element Analysis Software(ANSYS) were applied to optimize the rotor to reduce the mass of rotor.The results of optimization indicate that the mass of the rotor is decreased from 15.032 kg to 13.973 kg (is reduced by 7.1%),the safety factor is increased from 2.39 to 2.63(is increased by 10%),the first resonance frequency is 1 313 Hz compare to original design results.
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