Research on hovering control scheme to non-circular orbit  

作　　者：WANG GongBo ZHENG Wei MENG YunHe TANG GuoJian 

机构地区：[1]College of Aerospace and Material Engineering, National University of Defense Technology, Changsha 410073, China

出　　处：《Science China(Technological Sciences)》2011年第11期2974-2980,共7页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 10702078);the National Basic Research Program of China ("973" Program) (Grant No. JC08-01-05)

摘　　要：An open-loop control system for hovering at any selected position on spacecraft orbit is first presented given that the satellite＇s engine provides continuous finite thrust. Actually, the hovering states are unstable considering perturbations and thrust errors, so a feedback sliding mode variable structure control, which is adaptive and chattering-free, is designed. Under this feedback control scheme, the high-frequency chattering phenomenon is avoided, while the system stays highly robust at the same time. Simulation results show that the feedback control thrusts are continuous and the steady-states error can be confmed to 10-4 m at the presence of uncertain perturbations. Finally, the feasibility of realizing hovering orbits is analyzed taking the ＂Moliya＂ and geosynchronous Earth orbit （GEO） satellites as examples.

关 键 词：continuous finite thrust hovering orbit chattering-free variable structure control 

分 类 号：TM921.541[电气工程—电力电子与电力传动] TU196.1[建筑科学—建筑理论]