Electric Thrusters Redundancy Configuration Strategy Study for All Electric Propulsion Platform Station-Keeping  

作　　者：Min Wang Qiang Li Xin’gang Liang 

机构地区：[1]School of Astronautics,Beihang University,Beijing 100191,China [2]China Academy of Space Technology,Beijing 100094,China

出　　处：《Journal of Harbin Institute of Technology(New Series)》2018年第3期55-61,共7页哈尔滨工业大学学报（英文版）

摘　　要：Electric propulsion is used for all electric propulsion satellites to perform the orbit transfer,attitude control and station-keeping tasks. Generally electric propulsion subsystem contains 4 thrusters. But if one thruster fails in the beginning of satellite lifetime,other thrusters will undertake all the firing tasks. The firing time will be 2 to 3 times of thrusters without failure. Thus it may go beyond the allow ed lifetime of thruster. This paper puts forward two thruster redundancy configuration solutions with 6 thrusters to solve this problem. Two layout configurations and their corresponding station-keeping strategies are simulated and compared. The results show that the maximum firing time of both layout configurations can meet the lifetime limitation. This solution is a good reference for all electric propulsion satellites design.Electric propulsion is used for all electric propulsion satellites to perform the orbit transfer,attitude control and station-keeping tasks. Generally electric propulsion subsystem contains 4 thrusters. But if one thruster fails in the beginning of satellite lifetime,other thrusters will undertake all the firing tasks. The firing time will be 2 to 3 times of thrusters without failure. Thus it may go beyond the allow ed lifetime of thruster. This paper puts forward two thruster redundancy configuration solutions with 6 thrusters to solve this problem. Two layout configurations and their corresponding station-keeping strategies are simulated and compared. The results show that the maximum firing time of both layout configurations can meet the lifetime limitation. This solution is a good reference for all electric propulsion satellites design.

关 键 词：all electric propulsion satellite station-keeping electric thrusters configuration electric thruster layout FAILURE REDUNDANCY 

分 类 号：V423.4[航空宇航科学与技术—飞行器设计]