激光清理地球静止轨道碎片的天基平台控制方法

推导了天基高能激光清理作用地球静止轨道(geostationary earth orbit, GEO)碎片的最佳角度解析关系,分析了天基平台接近碎片过程以及相对碎片空间位置和姿态的相互影响,建立了激光清理GEO碎片的天基平台的轨道姿态耦合动力学模型,考虑了终端状态、安全距离、保持连续观测、控制和状态变量幅值等约束条件,以推进燃料消耗最省为性能指标,依据极小值原理推导了耦合控制方案的最优性内部结构标准,基于hp自适应伪谱法对仿真场景进行了寻优求解和分析验证。仿真结果表明,耦合优化控制方案合理可行,对未来天基激光清理GEO碎片的工程实施具有一定参考价值。

Platform control for removing geostationary earth orbit#br# debris of spacecraft based laser

Firstly an expression of the optimal interacting direction of the single high powered laser pulse about the geostationary earth orbit(GEO) debris is derived. By analyzing approach and generate the optimal direction, the spacecraft is in the need of orbit and attitude coupled control relative to the debris. As models of both translational and rotational dynamics are considered, constraints of terminal state, collision avoidance, keep seeing and finite magnitude of state and control variables are imposed. The problem of by using minimum energy optimal trajectory is formulated and further decomposed the Pontryagin minimum principle. The problem is solved numerically by using the hp adaptive pseudospectral method and the sequential quadratic programming algorithm. Finally, the obtained solution is verified through the minimum principle. Simulation results show that minimum energy solution is feasible, and the algorithm is efficient. The investigation provides a technical approach for engineering applications of removing debris.