一种小天体探测器绕飞轨道主动抗扰控制方法  

An Active Disturbance Rejection Control Method for Small Celestial Body Orbiting

作　　者：姚文龙[1,2] 杨珂 邵巍 刘毅[1] YAO Wenlong;YANG Ke;SHAO Wei;LIU Yi(College of Automation and Electronic Engineering,Qingdao University of Science and Technology,Qingdao 266061,China;School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China)

机构地区：[1]青岛科技大学自动化与电子工程学院,青岛266061 [2]北京理工大学宇航学院,北京100081

出　　处：《宇航学报》2022年第7期938-945,共8页Journal of Astronautics

基　　金：国家重点研发计划(2019YFA0706500);国家自然科学基金(61773227)。

摘　　要：针对小天体绕飞探测过程中,探测器受到的非球形引力摄动及太阳光压等多源扰动问题,结合绕飞探测的周期性特点,提出一种小天体探测器绕飞轨道主动抗扰控制方法。首先,通过迭代学习控制对小天体探测器受多源扰动影响产生的误差进行抑制,然后设计扰动观测器估计系统总扰动,构造自适应律实时估计扰动上界,进而设计控制律对总扰动进行主动补偿。最后以243Ida作为目标天体进行绕飞探测仿真分析,结果表明该控制方法能更加有效地提高小天体探测器的轨道跟踪控制精度。Aiming at the non-spherical gravitational perturbation and sunlight pressure during the exploration of small celestial bodies, and combining with its periodic characteristics, an active disturbance rejection control method for small celestial body orbiting is proposed. Firstly, iterative learning control is utilized to suppress the errors of small celestial body spacecraft affected by multi-source disturbances. Then the disturbance observer is designed to estimate the total disturbance of the system, and the adaptive law is constructed to estimate the upper bound of the disturbance in real time. Further, the control law is designed to actively compensate the total disturbance. Finally, 243 Ida is utilized as the target celestial body to carry out the simulation analysis of orbiting exploration. The results show that the control method can more effectively improve the orbit tracking control accuracy of the small celestial body spacecraft.

关 键 词：小天体探测 绕飞段 轨道跟踪 主动抗扰 迭代学习控制 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]