初始能量不确定飞行器再入制导方法研究  

The Reentry Guidance Method on Initial State Uncertainty Aircraft

作　　者：何光宇[1] 呼卫军[1] 

机构地区：[1]西北工业大学精确制导与控制研究所,西安710072

出　　处：《宇航学报》2008年第5期1496-1500,共5页Journal of Astronautics

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 The traditional method is no longer applicable when the initial condition of the aircraft reentry is uncertain.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.

关 键 词：不确定性 能量管理 标准能量 

分 类 号：TJ765[兵器科学与技术—武器系统与运用工程]