基于LMI的分散式深空飞行器编队控制

The decentralized control of formation flying spacecraft in deep space based on LMI

中文关键词  深空探测  飞行器  编队飞行  线性矩阵不等式  控制策略

英文关键词  deep space exploration  spacecraft  formation flying  linear matrix inequality  control strategy

中文摘要

      针对深空探测任务中飞行器编队的控制问题, 提出了一种基于线性矩阵不等式(LMI)的分散式控制方案.该方案考虑了深空编队与传统的近地编队之间的差异, 把该方案转化为一类LMI问题; 对比传统的基于“黎卡提方程–线性二次调节器”(Riccati-LQR)的编队方法, 本方法更精确地实现了控制目标, 并减轻了通讯压力, 降低了燃耗. 对该方案的仿真实例, 展示出在燃耗最小及编队质心位置不变的条件下, 队形机动的实现过程; 并对结果作出了分析.

英文摘要

      A decentralized control strategy for formation flying spacecraft in deep space mission is proposed based on LMI. This scheme takes account of the difference between the deep space formation and the near-earth formation, and is converted into an LMI problem. In comparing with the traditional Riccati-LQR-based formation control, this scheme achieves the control target with higher accuracy, relieves the communication burden and reduces the fuel consumption. Simulation examples of the proposed scheme demonstrate the process of formation adjustment and provide the result analysis, while minimizing the fuel consumption and holding the position of formation centroid.