Adaptive Quasi Fixed-Time Orbit Control Around Asteroid with Performance Guarantees  

作　　者：Renyong Zhang Caisheng Wei Zeyang Yin 

机构地区：[1]Technology and Engineering Center for Space Utilization,Chinese Academy of Sciences,Beijing,100094,China [2]School of Aeronautics and Astronautics,Central South University,Changsha,410083,China [3]School of Astronautics,Northwestern Polytechnical University,Xi’an,710072,China

出　　处：《Computer Modeling in Engineering & Sciences》2020年第1期89-107,共19页工程与科学中的计算机建模（英文）

基　　金：This work was supported in part of the Open Funds from National Key Laboratory of Aerospace Flight Dynamics and Key Laboratory of Space Intelligent Control Technology.

摘　　要：This paper investigates a novel quasi fixed-time orbit tracking control method for spacecraft around an asteroid in the presence of uncertain dynamics and unknown uncertainties.To quantitatively characterize the transient and steady-state responses of orbit tracking error system,a continuous performance function is devised via using a quartic polynomial.Then,integrating backstepping control technique and barrier Lyapunov function leads to a quasi fixed-time convergent orbit tracking controller without using any fractional state information and symbolic functions.Finally,two groups of illustrative examples are employed to test the effectiveness of the proposed orbit control method.

关 键 词：Prescribed performance adaptive control orbital control ASTEROID 

分 类 号：O17[理学—数学]