50Nms磁悬浮反作用飞轮转子优化设计方法的研究

Optimization Design of Magnetic Bearing Reaction Wheel Rotor

介绍了一种额定工作转速为-5000rpm^5000rpm,额定角动量为50Nms的五自由度磁悬浮反作用飞轮。利用多学科设计优化软件iSIGHT及有限元分析软件ANSYS,通过序列二次规划法对飞轮转子进行了多学科设计优化研究:以转子质量为优化目标,以转子、静力学、共振频率、转子动力学、角动量、几何尺寸等多学科要求同时作为约束条件进行了优化设计。结果表明,通过多学科设计优化,在满足设计要求的同时,使转子重量达到了最小化(4.09kg),提高了设计效率和设计质量,在航天器姿态控制系统的设计中具有现实意义。

This paper introduced the structure of a permanent magnet bias magnetic bearing reaction flywheel for stabilization of spacecraft attitude. Its rotation speed is from - 5000rpm to 5000rpm （rating angular momentum is 50Nms）. The maximum rotation speed is 10000rpm. The software of multidisciplinary design optimization （iSIGHT） and the software of finite element analysis software （ANSYS） are applied to optimize the rotor. The mass of the rotor is the optimize goal, and the rotor statics, resonance frequency, rotor dynamics and geometry dimension etc. are the constraint condition. The mass of the flywheel rotor achieved to 4.09kg by optimization design, and satisfied the require of design. The method in this paper can increase the design efficiency and quality, and has the important applied cost in design of flywheel system.