黏附激励下空间目标惯性参数的辨识方法  

Spacecraft Inertial Parameters Identification Method Based on Adhesion Excitation

作　　者：马卫华 袁大钟[3] 孟思洋 罗建军 MA Wei-hua;YUAN Da-zhong;MENG Si-yang;LUO Jian-jun(National Key Laboratory of Aerospace Flight Dynamics,Xi’an 710072,China;School of Astronautics,Northwestern Polytechnical University,Xi’an 710072,China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109,China)

机构地区：[1]航天飞行动力学技术重点实验室,西安710072 [2]西北工业大学航天学院,西安710072 [3]上海机电工程研究所,上海201109

出　　处：《宇航学报》2019年第10期1197-1204,共8页Journal of Astronautics

基　　金：国家自然科学基金(61690211,11472213);航天飞行动力学重点实验室基金(614221003121703)

摘　　要：针对黏附卫星会自然激励目标改变运动状态的现象,提出一种利用黏附激励进行空间非合作目标惯性参数的辨识方法。黏附前,利用主星对目标特征点的视觉测量,建立估计目标惯性参数与相对运动参数的滤波器,并估计目标的转动惯量比和质心;黏附后,主星直接利用该滤波器估计目标的新的质心速度,并基于动量守恒原理计算目标质量。该方法不仅充分利用黏附过程的自然激励,无需常规辨识必须的主动激励,而且激励前后算法一致,无需切换。数字仿真证实了算法的有效性。Focusing on the phenomenon that the adhesive satellites excite a target to change its motion states,a new identification method based on adhesive excitation for the inertial parameter identification of a non-cooperative spacecraft is proposed based on the adhesive excitation.Before the adhesive process,a filter to estimate the target inertial parameters and relative motion parameters is constructed based on the vision information between the master satellites and feature points on target,and is used to estimate the inertia moment ratio and centroid of the target.After the adhesive process,the filter will directly estimate the target centroid velocity changed by the adhesion excitation,and the target mass could be identified by the principle of momentum conservation.The proposed method not only can sufficiently apply the natural excitation in the adhesive process to avoid the extra active excitation required in conventional identification methods,but also maintain the algorithm’s consistency through the adhesive process to avoid the algorithm switch.The numerical simulation confirms the effectiveness of the proposed method.

关 键 词：黏附激励 空间非合作目标 惯性参数 辨识 

分 类 号：V448.[航空宇航科学与技术—飞行器设计]