预警卫星H_∞回路成形复合控制研究  

The Study on H_∞ Loop Shaping Compound Control of an Early-warning Satellite

作　　者：王涛[1] 李顺利[1] 

机构地区：[1]哈尔滨工业大学航天工程系,哈尔滨150001

出　　处：《航天控制》2011年第4期55-60,93,共7页Aerospace Control

摘　　要：针对预警卫星系统所具有的建模不确定性与干扰不确定性,为了实现凝视相机对战术弹道导弹的快速、高精度自动跟踪指向控制,设计了具有鲁棒稳定性的星体姿态与相机跟踪指向的复合控制系统。先利用拉格朗日法建立了预警卫星系统的动力学模型,在研究凝视相机对战术弹道导弹跟踪规律的基础上,运用H∞回路成形理论设计了星体姿态和相机跟踪指向的复合控制器,并利用μ分析方法研究了控制器的鲁棒稳定性。数学仿真表明,所设计的H∞回路成形控制器不仅具有鲁棒稳定性,而且控制精度、控制效率都高。Aiming at resolving the modeling uncertainty and disturbance uncertainty with the early warn ing satellite system, a compound control system combining with a camera tracking and pointing system that involves the satellite attitude of robust stability is designed to realize a quick and highly accurate automatic tracking and pointing control of the staring camera of tactical ballistic missiles. Firstly, a dynamics model is established by employing the Lagrange method. Then a compound controller with the combined functions of satellite attitude and camera tracking and pointing is designed in light of the theory of H ~ loop shaping, which is based on the research of the rule of the staring camera tracking the tactical ballistic missiles. Mean- while the robust stability of the controller is researched by using the method of μ analysis. The mathematical simulation demonstrates that the designed H∞ loop shaping controller is not only of robust stability, but also is of high control accuracy and efficiency.

关 键 词：预警卫星 H∞回路成形 Μ分析 复合控制 

分 类 号：TP273.3[自动化与计算机技术—检测技术与自动化装置]