基于脉冲优化控制的轨道转移修正  

Impulsive optimization control based orbital transfer correction

作　　者：黄远灿[1] 陈冬方[1] 

机构地区：[1]北京理工大学机电学院,北京100081

出　　处：《飞行力学》2014年第5期450-454,共5页Flight Dynamics

基　　金：国家自然科学基金资助(61075080)

摘　　要：针对空间轨道转移任务,研究了轨道转移修正过程中状态误差和能量优化控制问题。首先分析了轨道转移过程中各种摄动和测量误差等影响因素,通过对飞行中位置、速度的实际状态和目标轨迹状态比较,建立了控制系统方程。然后基于动态规划原理,提出了一种固定时间间隔的线性二次型离散脉冲优化控制策略。以固定的间隔时间计算控制量,使飞行器的位置和速度逼近目标状态,达到优化能量和位置精度的控制。最后对已知空间两点位置及固定转移时间的飞行任务进行仿真,仿真结果验证了控制方法的有效性。The trajectory state error and optimization problem of the control input were studied for orbital transfer correction. Based on the dynamic programming method, a secondary discrete impulse control of fixed-time interval was developed. The effects of perturbation factors and measuring errors are the main considerations. Various factors affecting the trajectory were analyzed and the control system was set up using the perturbation guidance method. A target orbit was accurately determined while considering the earth nonspherical perturbation factors. Finally, the control strategy was validated by an orbital transfer simulation. Numerical simulations demonstrated the effectiveness of the proposed approach, which is suitable for engineering applications in midcourse missions.

关 键 词：轨道转移修正 脉冲优化控制 线性二次型 非球形摄动 

分 类 号：V448.232[航空宇航科学与技术—飞行器设计]