基于Lyapunov直接法的航天器近程导引控制律

基于C-W方程的相对动力学模型,用Lyapunov直接法设计了一种运行于近圆轨道航天器的近程导引控制律,给出了控制模型。该控制律简单有效,无需求解系统方程即可分析和判断近程导引的稳定性进而施加控制。仿真结果表明,该法的导引精度可满足要求,其收敛时间和燃料消耗也在可接受的范围内。

Guidance Method Based on Lyapunov Approach for Space Rendezvous

The control law for short distance guidance and space rendezvous of two spacecrafts flying in nearly circular orbit was put forward based on the relative motion of C-W equations in this paper,which adopted Lyapunov approach.The control model was given.This method was simple and effective.The control could be actuated by analysis and judge the stability in short distance guidance without solving the system state equations.The simulation results showed that the guidance accuracy of the method met the requirement,and the convergence time and fuel consumption were acceptable.