小型月球探测器主动章动控制

The Active Nutation Control of the Small Lunar Explorer

小型月球探测器由地球停泊轨道向地月转移轨道射入时 ,要求采用自旋稳定来建立发动机的点火姿态。由于细长体和能量耗散的存在 ,导致了自旋运动的发散—章动运动 ,为此采用两种工程上常用的喷气主动控制方法设计了主动章动控制器。针对两种方法消耗燃料比较大的缺点 。

Spin stability is taken for the small lunar explorer to build up the solid motor firing attitude when it was injected from the Earth berth orbit to the Earth Moon transfer orbit. The prolate body and the energy dissipation lead to the instability of the spinning. Two common control scheme was used to design the active nutation controller. For the disadvantage of wasting fuel, a fuzzy active nutation control scheme was proposed. The three schemes were all given the numerical simulation result.