太空垃圾車捕獲未知物體後的突變參數識別問題研究

The Identification of the Mutation Parameters for the Space Junk Car Captured Unknown Object

韋文書(Wen-Shu Wei) ； 荊武興(Wu-Xing Jing) ； 高長生(Chang-Sheng Gao)

《航空太空及民航學刊.系列B》 44卷2期 (2012/12) Pp. 83-89

https://doi.org/10.6124/12-0803-701

摘要

太空垃圾車捕獲物體後，其品質特性發生突變，這給軌道和姿態的精確控制帶來了極大影響。為了能夠順利執行每次清掃任務，本文研究了捕獲物體之後太空垃圾車的品質特性參數突變識別問題。首先，對太空垃圾車和本文採用的辨識策略進行了描述；然後，建立了太空垃圾車的辨識模型；再後，對非線性辨識模型進行線性化處理，利用測量角速度對品質特性的可辨識性及可辨識度進行了分析；最後，給出太空垃圾車的參數，就其品質特性的可辨識性及可辨識度進行了數值分析，並利用反覆運算最小二乘法方法進行在軌辨識模擬。結果表明，當太空垃圾車完成清掃任務後，按照本文的策略，其品質和位置可以辨識，且位置的可辨識度高於品質。

關鍵字

在軌捕獲 ； 可辨識性 ； 辨識度 ； 突變參數識別

並列摘要

In this paper, Mass property identification for the SJC after captured the threat objects is studied. Firstly, the SJC is described, and the identification strategy is that thrusters as part of the SJC's control system are chosen to provide input excitation and the angular is as the measure. Secondly, the identification model of the SJC is derived. Thirdly, the condition number and singular value decomposition of the Measure Matrix is used to analyze the identifiability and Identifiability Degree (ID) of the mass property. Finally, the identifiability and ID are studied by use of the given parameters of the SJC in numerical, and Least Square method (LS) is proposed to identify the mass property. Simulation results shows that the mass property of the SJC after capturing objects can be identified by the strategy proposed in the paper and the ID of the position is higher than mass.

並列關鍵字

On-orbit capture ； Identifiability ； Identifiability degree ； Identification of the mutation parameters

參考文獻

Wilson, E., Sutter, D. W. and Mah, R. W., “Motion-Based Mass- and Truster-Property Identification for Thruster-Controlled Spacecraft,” AIAA, September 2005.

Wilson, E., Lages, C., Mah, R., and Clancy, D., “On-Line, Gyro-Based, Mass-Property Identification for Thruster-Controlled Spacecraft Using Recursive Least Squares,” Circuits and Systems, 2002.

Wilson, E., Experiments in Neural Network Control of a Free-Flying Space Robot, Master Thesis, Stanford University, Stanford, 1995.

Thienel, J. K., Luquette, R. J., and Sanner R. M., “Estimation of Spacecraft Inertia Parameters,” AIAA, August 2008.

Tanygin, S. and Williams, T., “Mass Property Estimation Using Coasting Maneuvers,” Journal of Guidance, Control, and Dynamics, Vol. 20, No. 4, 1997, pp: 625-632.