摘要
研究共面轨道航天器悬停编队和交会控制问题。基于轨道面极坐标运动方程,建立航天器期望状态和实际状态运动方程,将实际状态追踪期望状态问题化为参考模型跟踪误差控制问题求解。针对参考模型跟踪误差方程的时变耦合性,采用Lyapunov定理及LaSalle不变性原理设计不同偏心率悬停编队和椭圆参考轨道交会最优控制律,并分析系统稳定性。仿真结果验证了该算法的正确性和有效性。
Hovering formation flying and rendezvous of two spacecrafts in a coplanar orbit are investigated. Based on the coplanar polar coordinate equations, the desired state and the actual state equations for spacecrafts are established. The problem of the desired state tracked by actual state is changed into the desired model for the pursuit spacecraft. In view of the time-varying coupled error model, the Lyapunov method and LaSalle theory are used to design the optimal control laws of hovering formation flying for different eccentricity and rendezvous for elliptical reference orbits, also the system stability is analyzed. Simulation results demonstrate the correctness and effectiveness of the method.
出处
《航天控制》
CSCD
北大核心
2009年第3期32-36,共5页
Aerospace Control
关键词
航天器
极坐标
悬停编队
交会
Spacecraft
Polar coordinate
Hovering formation
Rendezvous
