分布式卫星-薄膜新型空间结构的在轨指向协同控制研究

项目名称： 分布式卫星-薄膜新型空间结构的在轨指向协同控制研究

项目编号： No.11472069

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 彭海军

作者单位： 大连理工大学

项目金额： 88万元

中文摘要： 分布式卫星-薄膜空间结构是指在太空中的分布式卫星通过与薄膜结构连接而构成的新型空间结构，具有展开面积大、超轻柔性以及自主机动能力等特点，并且是未来大型空间太阳能电站和大孔径空间望远镜等的重要组成部分。本项目针对分布式卫星-薄膜空间结构的在轨指向任务需求，进行分布式协同控制研究。主要研究内容包括：首先，建立分布式卫星-薄膜空间结构的在轨动力学模型，并在地球中心引力场和空间环境干扰下，对其在轨复杂动力学行为进行分析与预测；然后，考虑在轨指向调整过程中，以薄膜结构变形与振动幅值极小化为目标，进行分布式卫星的非线性最优路径规划和保辛求解方法研究；其次，在标称路径基础上考虑模型的非线性和空间环境干扰的不确定性，进行非线性模型预测控制律设计和快速保辛求解方法研究；最后，考虑在轨稳定指向保持中，以薄膜结构与预定设计形状偏差最小为目标，进行薄膜结构形状保持的分布式协同控制系统设计与简化方法研究。

中文关键词： 大型空间结构；在轨指向；最优控制；分布式控制；保结构算法

英文摘要： Distributed satellite-space membrane structure means a new space structure which is composed of distributed satellites connected with membrane structure in space. This new space structure has many features, such as large developed area, super soft,autonomous maneuver,ect. Also,it is an important part of the future large space solar power system and the large space telescope. This project aims at the on-orbit pointing mission of the distributed satellite-space membrane structure, and studies the distributed coordinated control problem. The main research contents in this project include: first, the on-orbit dynamical model is established for the distributed satellite-space membrane structure, and its complex dynamical behavior should be analyzed and predicted under the centre of the earth's gravity field and the space environmental interference; then, in the adjustment of on-orbit pointing mission, minimizing the deformation and vibration of membrane structure is taken as the goal for the nonlinear optimal path planning of the distributed satellites and the symplectic numerical method; next, based on the known path, the nonlinear model predictive control is designed and the fast symplectic method is studied under the nonlinear model and the disturbances of space environment; at last, in the keeping of on-orbit pointing, minimizing the deviation between the real deformation and the expected shape of membrane structure is taken as the goal for designing the distributed coordinated control of membrane structure and its simplification method.

英文关键词： large space structure;On-orbit pointing;Optimal control;Distributed control;Structure-preserving algorithm