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首页> 外文期刊>Journal of Guidance, Control, and Dynamics >Time-Optimal Detumbling Control of Spacecraft
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Time-Optimal Detumbling Control of Spacecraft

机译:航天器的时间最优退避控制

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摘要

THE problem of designing fast detumbling maneuvers for anspacecraftwith restricted actuation torques arises inmany spacenapplications. Satellites are often equipped with an attitude controlnsystem (ACS), which usually has two modes of operation: detumb-nling and stabilization. In detumbling mode, the ACS controller isnresponsible for dumping the initial angular velocity from when thensatellite was in the idle mode; this situation occurs when the satellitenis released fromthe launch vehicle or when power is so low that ACSnhas to be turned off to save power [1]. Only after this phase can thenstabilization mode be activated to control the orientation of thensatellite to align antennas toward the Earth. Reaction wheels arencommonly used as the actuators of the ACSs. Satellites frequentlynneed fast maneuvers [2], minimum time maneuvers, while the speednis restricted owing to a low level capacity of the actuators. Hence,nplanning optimal maneuvers is highly desired.
机译:设计具有有限的致动扭矩的航天器的快速减速动作的问题出现在许多空间应用中。卫星通常配备有姿态控制系统(ACS),该系统通常具有两种运行模式:解陷和稳定。在退格模式下,ACS控制器负责从卫星处于空闲模式时开始抛弃初始角速度。当卫星从运载火箭上释放时,或者当功率太低以至于必须关闭ACSn以节省功率时,就会发生这种情况[1]。只有在此阶段之后,才能激活稳定模式以控制卫星的方向,以将天线对准地球。反作用轮通常用作ACS的执行器。卫星经常需要快速机动[2],最短时间机动,而速度却由于执行器的低水平容量而受到限制。因此,非常需要计划最佳机动。

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