SGCMG系统的奇异状态脱离性判定方法研究

A Study on Singularity Escapable Determining Method of SGCMG System

单框架控制力矩陀螺系统 ( SGCMG)是大型航天器姿控系统较为理想的选择 ,但是该系统存在严重的奇异现象 ,增加了操纵律的设计与开发的难度。文章从奇异性分析的角度对具有冗余度的单框架控制力矩陀螺系统奇异状态进行了研究 :提出了一种新的冗余的 SGCMG系统的零运动微分动力系统的构造方法 ;给出了该零运动微分动力学下具有冗余度的单框架控制力矩陀螺系统奇异状态的性质 ,并改进了奇异可脱离性的判别方法。

Single Gimbal Control Moment Gyro system is the best choose of large spacecraft attitude control system.But the phenomenon of singularity exists in this system.This increases difficulty in designing steering law.The singularity states of SGCMG system on the base of singularity analysis are researched,which have redundancy.The construction method of a new redundant SGCMG zero motion differential dynamic equation is established.The character of SGCMG system in the form of zero motion differential dynamic equation is given.The criterion of singularity escapable from reference 4 is improved.