Non-cooperative spacecraft proximity control considering target behavior uncertainty  

作　　者：Guanjie Sun Mengqi Zhou Xiuqiang Jiang 

机构地区：[1]China Academy of Space Technology,Beijing 100081,China [2]School of Aeronautics and Astronautics,Sichuan University,Chengdu 610207,China

出　　处：《Astrodynamics》2022年第4期399-411,共13页航天动力学（英文）

基　　金：This study was supported by the Qian Xuesen Laboratory of Space Technology,CAST(Grant No.GZZKFJJ2020001);the Open Funding of the National Defense Science and Technology Key Laboratory of Space Intelligent Control Technology(Grant No.6142208200304);the Postdoctoral Research Foundation of Sichuan University.

摘　　要：The significant characteristics of space non-cooperative targets include the uncertainties of dynamic parameters and behaviors.Herein,a hybrid proximity control strategy adapted to the behavior uncertainty of a non-cooperative target is presented.First,the relative motion dynamics between the chaser and target is established in the geocentric inertial coordinate system and transcribed based on the chaser spacecraft body coordinate system.Subsequently,to facilitate proximity control under uncertain conditions,an extended state observer is designed to estimate and compensate for the total uncertainty in the relative motion dynamics.Finally,an event-triggered sliding mode control law is designed to track the target with behavior uncertainty and realize synchronization.Numerical simulations demonstrate the effectiveness of the proposed proximity control strategy for both tumbling and maneuvering targets.

关 键 词：non-cooperative target spacecraft proximity control extended state observer event-triggered sliding mode control 

分 类 号：V44[航空宇航科学与技术—飞行器设计]