在轨航天器动力学参数辨识技术研究  

Investigation of Dynamic Parameter Identification of On-orbit Spacecraft

作　　者：于登云[1] 夏人伟[1] 孙国江[2] 

机构地区：[1]北京航空航天大学,北京100083 [2]中国空间技术研究院,北京100094

出　　处：《中国空间科学技术》2008年第1期13-17,40,共6页Chinese Space Science and Technology

摘　　要：针对在轨航天器低频密集和辨识时激励源有限且难于测量等特点,开展了适用于低频密集模态且不需激励信息的在轨航天器动力学参数辨识方法的研究,探讨了直接利用在轨响应数据在频域内辨识航天器动力学参数的技术;并根据在轨航天器低频密集特点,设计了在轨航天器动力学参数辨识仿真试验系统,对该辨识方法进行了试验验证。In dynamic parameter identification of on-orbit spacecraft, the modal frequencies are low and high density, the excitation sources are limited and indiscernible. According to these characteristics, a dynamic parameter identification method for on-orbit spacecraft was investigated, directly utilizing on-orbit response to identify the dynamic parameters in frequency domain. It can be used for low and high density frequency identification without excitation information. Considering the characteristic of low and high density frequencies, a simulation test system for dynamic parameter identification of on-orbit spacecraft was developed, which was used to validate the method above.

关 键 词：参数识别 低频密集模态 动力学 在轨航天器 

分 类 号：V412.4[航空宇航科学与技术—航空宇航推进理论与工程] V217.1