减小小型航天器振动活动性的方法

M.V. Biryukova, A. Tufan, V. Ermakov
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引用次数: 1

摘要

航天器的完美运行及其在轨研究的成功实施主要取决于航天器相对于基准坐标系的空间定向和稳定控制系统的技术和运行特性,这些特性是通过某些外部和内部摄动的稳定特性来实现的。该研究旨在确定静态和动态不平衡,并分析非接触式电动机-飞轮在不同转子转速下运行所产生的力和力矩的影响程度。为了降低非接触式电动机-飞轮在地面和飞行过程中的静态和动态不平衡,提出了在非接触式电动机-飞轮系统中引入显著低于常规系统固有频率的隔振器,以实现非接触式电动机-飞轮在地面和飞行过程中的静态控制。隔振器应具有质量小、刚度小、工作温度范围广等特点。根据轨道高度,确定了作用在“以色列-5”航天器上的外部扰动力的力矩。对各种型号的直流电机飞轮进行了分析。结果表明,在小型航天器上引入非接触式电机-飞轮作为定位与稳定控制系统的执行元件,提高了定位精度。研究了如何减小非接触式电机-飞轮对航天器结构振动干扰的影响
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Approach to Reducing Vibroactivity of Small Spacecraft
Flawless spacecraft operation and successful implementtation of their research in orbit mainly depend on technical and operational characteristics of the spacecraft orientation and stabilization control systems in space relative to the base frame of reference axes achieved through stabilizing properties of certain external and internal perturbations. The research was aimed at determining static and dynamic imbalances and analyzed the levels of influence of forces and moments created by non-contact electric motor-flywheel operating at the various rotor speeds. In order to reduce the static and dynamic imbalance of the non-contact electric motor-flywheel obtained as a result of ongoing experimental studies, it was proposed to introduce a vibration isolator with natural frequency significantly lower than that in the conventional systems in order to statically hold the non-contact electric motor-flywheel during ground and flight operation. The vibration isolator should have small mass and rigidity, as well as a wide range of operating temperatures, etc. Depending on the orbit altitude, the moments of external disturbing forces acting on the Iskra-5 spacecraft were determined. Electric DC motor-flywheels of various types were analyzed. It was shown that introduction of the non-contact electric motor-flywheel as the executive element of the orientation and stabilization control systems on small spacecraft improved the orientation accuracy. Ways to reduce the effect of vibration disturbances on the spacecraft structure from the non-contact electric motor-flywheel were considered
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来源期刊
CiteScore
1.10
自引率
0.00%
发文量
40
期刊介绍: The journal is aimed at publishing most significant results of fundamental and applied studies and developments performed at research and industrial institutions in the following trends (ASJC code): 2600 Mathematics 2200 Engineering 3100 Physics and Astronomy 1600 Chemistry 1700 Computer Science.
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