Discrete time multiple spacecraft formation flying attitude optimal control in presence of relative state constraints  

作　　者：Hossein MORADI PARI Hossein BOLANDI 

机构地区：[1]Department of Electrical Engineering,Iran University of Science and Technology,Tehran 009821,Iran

出　　处：《Chinese Journal of Aeronautics》2021年第4期293-305,共13页中国航空学报（英文版）

摘　　要：This paper addresses the challenge of synchronized multiple spacecraft attitude reorientation in presence of pointing and boundary constraints with limited inter-spacecraft communication link.Relative attitude pointing constraint among the fleet of spacecraft has also been modeled and considered during the attitude maneuvers toward the desired states.Formation fling control structure that consists of decentralized path planners based on virtual structure approach joint with discrete time optimal local controller is designed to achieve the mission's goals.Due to digital computing of spacecraft's onboard computer,local optimal controller based on discrete time prediction and correction algorithm has been utilized.The time step of local optimal algorithm execution is designed so that the spacecraft track their desired attitudes with appropriate error bound.The convergence of the proposed architecture and stability of local controller's tracking error within appropriate upper bound are proved.Finally,a numerical simulation of a stereo imaging scenario is presented to verify the performance of the proposed architecture and the effectiveness of the algorithm.

关 键 词：DECENTRALIZED Discrete time Formation flying Optimal control SPACECRAFT Virtual structure approach 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]