一种磁悬浮陀螺飞轮方案设计与关键技术分析

提出一种磁悬浮陀螺飞轮的设计方案,采用洛伦兹力磁轴承对陀螺飞轮转子进行五自由度支承以提供转动自由度,并利用洛伦兹力磁轴承磁力与电流的线性特性,间接测量陀螺仪的输入角速度.该装置作为姿态控制执行机构兼有敏感器功能,可同时进行三自由度姿态控制与两自由度姿态敏感.针对磁悬浮陀螺飞轮二自由度姿态敏感与三自由度姿态控制这两项关键...

Design of a Magnetically Suspended Gyrowheel and Analysis of Key Technologies

A design of the magnetically suspended gyrowheel is proposed in this paper. The rotor of the gyrowheel is supported by Lorentz force magnetic bearings in 5 degrees of freedom. The input angular rates of the device are measured indirectly by utilizing the linear characteristics between the force and the current of the bearings. This innovative device can generate attitude control torque about 3 axes while at the same time measure the spacecraft angular rates about 2 axes. The key technologies of the device are analyzed in the paper. The equation of motion in the rotor coordinates is derived, and the feed forward matrix control is proposed to eliminate the gyroscopic effect on gimbaling control. The experimental results demonstrate the effectiveness of the proposed method. The magnetically suspended gyrowheel promises to fulfill the need to lower the volume, mass, power, and launch cost, and has significant application value in small satellite technology.