卫星远距离伴飞的变结构控制

主要研究卫星远距离稳态伴飞的控制问题。首先,根据线性相对运动方程(C-W方程)设计了能实现稳态伴飞的变结构控制律,并证明了其在有干扰情况下的有效性。然后,推导了适用于远距离相对运动的非线性方程解析解,并在此基础上对伴飞控制律进行了改进,以实现远距离的稳态伴飞。通过仿真,比较了上述控制律的效果,证明了基于非线性相对运动的变结构控制能有效地实现远距离稳态伴飞。

Variable Structure Control of Remote Companying for Satellites

The control of stable companying for satellites at long range is investigated in this paper.First,a variable structure control law to implement the stable companying is designed according to the C-W equation,and is proved to be effective in the presence of disturbances.Then,analytic solution of the nonlinear equations applicable to the relative motion at long range is derived.According to the solution,the control law is improved to implement the stable companying at long range.The two control laws are compared by simulations,and the result validates that the improved variable structure control is effective for the stable companying at long range.