大承载低扰动六自由度磁卸载机构的设计  

Design of Six-Degree-of-Freedom Unloading Mechanism with Large Load and Low Disturbance

作　　者：王舒雁[1,2] 吴芊 杨磊 崔晓海[3] Wang Shuyan;Wu Qian;Yang Lei;Cui Xiaohai(Beijing Institute of Control Engineering,Beijing 100194,China;Beijing Key Laboratory of Long Life Technology for Precision Rotation and Transmission,Beijing,100194,China;Central South University,Changsha 410083,China)

机构地区：[1]北京控制工程研究所,北京100194 [2]精密转动与传动长寿命技术北京市重点实验室,北京100194 [3]中南大学,长沙410083

出　　处：《航天控制》2023年第2期81-87,共7页Aerospace Control

摘　　要：分析了水浮、悬吊、气浮等常用重力卸载方式的局限性,设计开发了一种磁卸载机构。新型机构采用径向并联双结构方式,克服了大承载机构悬浮时需外部冷却设备的难题。双边、无缝拼接永磁体的采用,实现了空间工作磁场强度的一致性,消减了干扰力的引入;同时选用不导磁、不导电的非金属线圈骨架,无附加磁滞阻力和阻尼力矩,实现了零重力卸载的要求。通过应用试验表明该卸载机构满足空间磁悬浮旋转平台地面研究和验证的需求。The limitations of common unloading methods is analyzed such as water flotation,suspension and air floating,and a magnetic unloading mechanism is designed.A radial parallel dual structure is applied to the new mechanism which overcomes the difficulty of requiring external cooling equipment when the large bearing mechanism is suspended.The use of double-sided and seamless splicing permanent magnets realizes the consistency of magnetic field strength in space work and reduces the introduction of interference force;At the same time,the non-magnetic and non-conductive non-metallic coil winding is selected,and there is no additional hysteresis resistance and damping torque,and the requirement of zero gravity unloading is realized.The result of application test shows that the unloading mechanism meets the requirements of ground research and verification of space magnetic levitation rotary platform.

关 键 词：空间磁悬浮旋转平台 磁卸载机构 扰动 高精度性能 

分 类 号：V442[航空宇航科学与技术—飞行器设计]