项目名称: 非线性切换自适应控制的稳定性及在绳系卫星保持段应用的研究
项目编号: No.60804016
项目类型: 青年科学基金项目
立项/批准年度: 2009
项目学科: 金属学与金属工艺
项目作者: 谈树萍
作者单位: 北京控制工程研究所
项目金额: 21万元
中文摘要: 本项目围绕绳系卫星保持阶段强非线性、空间飞行条件下输入受限和能量耗散的动力学特点,深入研究特征参数不确知非线性系统的控制稳定性问题,建立切实可行的输入受限下非线性系统自适应切换控制设计方法,并开展仿真试验研究。研究的主要贡献在于:1)针对不同非线性系统,设计了自适应及自适应切换控制,并对系统稳定性进行了分析;2)针对工程具体问题,对输入受限下非线性系统的自适应控制方法进行了研究;3)回答了连续、小干扰下绳系卫星在保持段的稳定问题及切换控制器设计问题。
中文关键词: 非线性系统;输入受限;自适应控制;切换控制;绳系卫星
英文摘要: Concentrating on the nonlinearity of tethered satellites in stationg keeping course, the input constraints in space flight and the characteristics of the dissipative dynamics, this project investigates the stability issues of the complex tethered satellite systems with parametric uncertainties,establish feasible adaptive switching approaches for nonlinear systems with input constraints, and perform simulation study. The major contributions of our research are as follows: 1) we design adaptive switching/non-switching controllers suited to various nonlinear systems and analyze the stability of the closed-loop systems. 2) for the specific engineering problems, we investigate the adaptive control approach for nonlinear systems with input constraints; 3) we answer the question of the stability and the switching controller design for tethered satellites under small continuous disturbances in station keeping course.
英文关键词: nonlinear system; input constraints; adaptive control; switching control; tethered satellite