基于GTLS的零动量卫星惯量矩阵在轨辨识  

In-Orbit Identification of the Inertial Matrix of Zero Momentum Satellite

作　　者：林佳伟[1,2] 王平[1] 

机构地区：[1]北京控制工程研究所,北京100190 [2]空间智能控制技术国家级重点实验室,北京100190

出　　处：《空间控制技术与应用》2009年第5期26-30,64,共6页Aerospace Control and Application

摘　　要：使用广义总体最小二乘(GTLS,generalized total least squares)方法对零动量卫星进行惯量矩阵在轨辨识.提出了GTLS算法的先验最小距离解的定义:当测量信息不足以确定唯一解时,解空间中最接近先验估计的解.给出了先验最小距离解的算法,并应用于惯量矩阵在轨辨识.仿真结果表明了该辨识方法的有效性及先验最小距离解相对于最小范数解的优越性.A generalized total least squares method is adopted to in-orbit identification of the inertial matrix of a zero momentum satellite. A prior minimum distance solution is defined ： this solution is closest to the prior estimate in solution space if measurement information is not enough to determine a unique solution. An algorithm of the prior minimum distance solution is proposed, and applied to in-orbit identification of an inertial matrix. Simulation results validate feasibility of the identification method and advantage of the prior minimum distance solution over the minimum norm solution.

关 键 词：零动量卫星 惯量矩阵 在轨辨识 广义总体最小二乘 先验估计 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]