Attitude dynamics, control and formation flying of satellites

拟议研究的总体目标是检验低成本、创新和智能控制方法的可行性，这些方法需要最小的功率或推进剂来进行姿态控制和/或自主编队维护。为了研究这些问题并促进新颖和创新技术的发展，建议的研究将集中在两个主要目标上：姿态动力学和控制，编队动力学和控制。本研究的第一个目的是研究姿态动力学和控制系统中遇到的问题。将研究几种低成本的方法。这些包括基于环境力（即太阳辐射压力、空气动力、磁力和重力）和这些力的组合的控制。库马尔博士以前在这些领域的工作，包括用于姿态控制的系绳和流体环的应用，将得到扩展。在下一个目标中，Kumar博士对基于推进器和环境力的队形控制方法的研究将进一步发展并应用于队形保持和重新配置。该研究还将包括耦合姿态和地层动力学以及控制。申请人对基于线性和非线性控制器的鲁棒和智能编队控制策略的研究将扩展并应用于这两个目标。最后将通过计算机模拟和地面试验来验证所提出方法的可行性。

The overall objective of the proposed research is to examine the feasibility of low cost, innovative and intelligent control methods requiring minimum power or propellant for attitude control and/or autonomous formation maintenance. In order to investigate these issues and foster the development of novel and innovative technologies, the proposed research will focus on two primary objectives: attitude dynamics and control, and formation dynamics and control. The first objective of the research is to examine issues encountered in attitude dynamics and control systems. Several low cost methods will to be studied. These include controls based on environmental forces (i.e., solar radiation pressure, aerodynamic force, magnetic force, and gravity force) and combinations of these forces. Dr. Kumar's previous work in these areas, including the application of tethers and fluid rings for attitude control, will be extended. In the next objective, Dr. Kumar's research on formation control methods based on thrusters and environmental forces will be further developed and applied to formation keeping and reconfiguration. This research will also include coupled attitude and formation dynamics and control. The applicant's research on robust and intelligent formation control strategies, based on linear and nonlinear controllers will be extended and applied to both the objectives. The feasibility of the proposed methods will finally be tested via computer simulation and ground test.