采用电磁分流阻尼的反作用飞轮隔振方法设计与分析  

Design and analysis of vibration isolation for reaction wheel by using electromagnetic shunt damping

作　　者：张涵 罗青 ZHANG Han;LUO Qing(College of Aerospace Science and Engineering,National University of Defense Technology,Changsha 410073,China)

机构地区：[1]国防科技大学空天科学学院,湖南长沙410073

出　　处：《振动工程学报》2024年第2期247-257,共11页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(11702321)。

摘　　要：反作用飞轮是重要的卫星姿态控制执行机构,也是星上最主要的微振动源。针对反作用飞轮转速范围宽的工作特点,本文提出采用六脚隔振装置结合电磁分流阻尼技术的隔振方法。考虑陀螺效应的耦合作用,建立了反作用飞轮与隔振装置的一体化动力学模型。通过理论分析和数值仿真,研究了陀螺效应对系统的模态、固有频率以及隔振性能的影响,并分析了关键参数对系统隔振性能的影响。开展了隔振优化设计,对优化后的隔振性能进行分析,并对隔振装置中的单个隔振单元进行实验验证,验证了电磁分流阻尼和弹簧刚度对隔振性能的影响。Reaction wheels are not only important attitude control actuators for satellites,but also the most prominent onboard mi⁃cro-vibration source.Considering the varying rotating speed of reaction wheels,this paper proposes a new vibration isolation meth⁃od using a six-strut isolator combined with the electromagnetic shunt damping(EMSD)technique.A dynamic model of the cou⁃pled system consists of a reaction wheel and the isolator is derived including the gyroscopic effect produced by the rotating wheel.The results obtained through analytical analysis and simulations show that gyroscopic effects have a great effect on the natural modes,frequencies,and isolation performance.And then,the influences of key parameters on the isolation performance are ana⁃lyzed and optimized.Finally,an isolation strut based on the EMSD technique is manufactured and tested.The experiment results verified the influences of the stiffness and EMSD on the transmissibility of the strut.

关 键 词：微振动 隔振 反作用飞轮 电磁分流阻尼 

分 类 号：V414.33[航空宇航科学与技术—航空宇航推进理论与工程] TB535[理学—物理]