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DOI:
飞控与探测:2019,2(1):49-55
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小型磁悬浮CMG高速转子动框架效应前馈补偿与实验
(1.上海航天控制技术研究所·上海·201109;2.上海市空间智能控制技术重点实验室·上海·201109;3.清华大学·北京·100084)
Feed-forward Compensation and Experiment Research in Moving Gimbal Effects on High Speed Rotor of Small Magnetically Suspended CMG
(1.Shanghai Aerospace Control Technology Institute, Shanghai 201109;2.Shanghai Key Laboratory of Aerospace Intelligent Control Technology, Shanghai 201109;3.Tsinghua University, Beijing 100084)
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中文摘要: 磁悬浮控制力矩陀螺是航天器快速姿态控制与快速机动的新型空间执行机构。由于动框架效应,框架转动输出力矩反作用于飞轮转子,会导致磁轴承的径向载荷和控制电流发生改变。为抑制动框架效应对磁浮转子的影响,在分析力矩输出时高速磁浮转子受力特性的基础上,采用角速率前馈控制策略实现对动框架效应引发的力矩扰动的有效抑制,并在所研制的75Nms立式小型磁悬浮控制力矩陀螺上进行了整机输出特性测试。试验结果表明:该方法能在保证磁浮转子高速稳定的前提下有效抑制动框架效应,满足整机力矩输出的要求。
Abstract:The magnetically suspended control moment gyroscope (CMG) is a new machine for spacecraft attitude control and rapid maneuvering. Because of the moving-gimbal effects, axis run-out and control current will change significantly owing to gimbal revolving, which then reduces system stability severely. To reduce the effect of moving gimbal effect on the high speed rotor, angular rate feed-forward control for moment disturbances depression in magnetic bearing system was presented on the basis of analysis for the forced characteristics of the high speed magnetically suspended rotor. The output characteristics was tested on the vertical type small magnetically suspended CMG,of which the angular momentum is 75Nms. The experiment results show that this method can effectively suppress the moving-gimbal effects and realize the high stability when the magnetically suspended rotor runs at a high speed, and also improve moment-output performance of the CMG.
文章编号:20190108     中图分类号:    文献标志码:
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吕奇超,吕东元,李延宝,刘平凡.小型磁悬浮CMG高速转子动框架效应前馈补偿与实验[J].飞控与探测,2019,2(1):49-55.

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