摘要
能量管理是航天器再入的重点。通常采用的对能量和轨迹规划方法在飞行器初始状态不确定情况下不再适用。针对初始状态不确定飞行器再入能量管理问题,本文制定以分析飞行器能量耗散能力为基础,确定控制量模型、建立标准速度高度曲线,并导引飞行器跟踪标准速度高度曲线飞行方案。仿真验证了该方案能适应较大空域和速度变化范围,同时在风干扰和气动拉偏15%情况下验证了该方案具有强稳定性和鲁棒性。
Energy management is an important component of the reentry of the aircraft. The traditional method is no longer applicable when the initial condition of the aircraft reentry is uncertain. In order to solve this problem, this paper took another reentry plan. Based on the analysis of the aircraft＇ s characteristics, this plan made certain the control variables, set the standard curve of the flying speed and altitude and guided the aircraft pursue the standard curve. The simulation has testified that the plan is applicable in a fairly large airspace and at a large range of flight speed. The good simulation effects under the condition of 15% aerodynamic interference and wind disturbance show that this plan has a preferable stability and robust.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2008年第5期1496-1500,共5页
Journal of Astronautics
关键词
不确定性
能量管理
标准能量
State uncertainty
Energy management
Standard energy
