Time-varying state-space model identification of an on-orbit rigid-flexible coupling spacecraft using an improved predictor-based recursive subspace algorithm | |
Wu SN(邬树楠)1; Wu ZG(吴志刚)1; Ni ZY(倪智宇)3; Liu JG(刘金国)2 | |
刊名 | Acta Astronautica |
2019 | |
卷号 | 163页码:157-167 |
关键词 | Parameter identification State-space model Recursive subspace method Time-varying system Affine projection sign algorithm State estimation |
ISSN号 | 0094-5765 |
产权排序 | 2 |
英文摘要 | Spacecraft control problems frequently require the latest model parameters to provide timely updates to the controller parameters. This study investigates the recursive identification problem in a the time-varying state-space model of an on-orbit rigid-flexible coupling spacecraft. An improved recursive predictor-based subspace identification (RPBSID) method is presented to increase on-orbit identification efficiency. Compared with the classical RPBSID and other subspace methods, the improved RPBSID applies the affine projection sign algorithm. Accordingly, the system state variables can be determined directly via recursive computation. Thus, the proposed algorithm does not require constructing the corresponding Hankel matrix or implementing singular value decomposition (SVD) at each time instant. Consequently, the amount of data used in the identification process is reduced, and the computational complexity of the original method is decreased. The time-varying state-space model of the spacecraft is estimated through numerical simulations using the classical RPBSID, improved RPBSID, and SVD-based approaches. The computational efficiency and accuracy of the three methods are compared for different system orders. Computed results of the test response demonstrate that the improved RPBSID algorithm not only achieves sufficient identification accuracy but also exhibits better computational efficiency than the classical methods in identifying the parameters of the spacecraft time-varying state-space model. |
语种 | 英语 |
WOS记录号 | WOS:000489353000016 |
资助机构 | National Natural Science Foundation of China (11502040, 51775541) ; Key Program of the Chinese Academy of Sciences (Y4A3210301) ; Postdoctoral Science Foundation of China (2016M601354) |
内容类型 | 期刊论文 |
源URL | [http://ir.sia.cn/handle/173321/23584] |
专题 | 沈阳自动化研究所_空间自动化技术研究室 |
通讯作者 | Liu JG(刘金国) |
作者单位 | 1.School of Aeronautics and Astronautics, Dalian University of Technology, Dalian, China 2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang, China 3.College of Aerospace Engineering, Shenyang Aerospace University, Shenyang, China |
推荐引用方式 GB/T 7714 | Wu SN,Wu ZG,Ni ZY,et al. Time-varying state-space model identification of an on-orbit rigid-flexible coupling spacecraft using an improved predictor-based recursive subspace algorithm[J]. Acta Astronautica,2019,163:157-167. |
APA | Wu SN,Wu ZG,Ni ZY,&Liu JG.(2019).Time-varying state-space model identification of an on-orbit rigid-flexible coupling spacecraft using an improved predictor-based recursive subspace algorithm.Acta Astronautica,163,157-167. |
MLA | Wu SN,et al."Time-varying state-space model identification of an on-orbit rigid-flexible coupling spacecraft using an improved predictor-based recursive subspace algorithm".Acta Astronautica 163(2019):157-167. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论