具有载荷扰动抑制的卫星姿态控制方法及验证
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摘要
针对载荷转动对星体产生的呈周期变化的干扰,开展了干扰抑制方法研究。利用干扰的周期特性,基于李亚普诺夫原理设计了参数未知的周期干扰力矩的辨识算法,实现了卫星姿态的自适应控制。最后进行了物理仿真试验,利用真实的星载计算机和控制部件,在气浮台上进行了试验验证,结果表明,算法有效地抑制了载荷转动的干扰,卫星的姿态稳定度提高了50%,且算法简单,易于星上软件实现。
The interference suppression method was studied for the periodic change of the satellite generated by the rotation of the load. Using the theory of Lyapunov stability, an adaptive control algorithm based on parameter identification for periodic signal was proposed. And then physical experiment verification using real on-orbit computer and control components was carried out.The results show that the method proposed is in effect, improving satellite stability by fifty percent, and is easy to realize.
The interference suppression method was studied for the periodic change of the satellite generated by the rotation of the load. Using the theory of Lyapunov stability, an adaptive control algorithm based on parameter identification for periodic signal was proposed. And then physical experiment verification using real on-orbit computer and control components was carried out.The results show that the method proposed is in effect, improving satellite stability by fifty percent, and is easy to realize.
引文
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[2] 王新民,褚永辉,张俊玲,等. 转动载荷对卫星姿态的影响与控制研究[J].空间控制技术与应用,2016,42(5):14-18. WANG X M,CHU Y H,ZHANG J L, et al. On the influence of rotatable payload and control of satellite attitue[J].Aerospace Control and Application, 2016,42(5):14-18(in Chinese).
[3] 耿长福. 航天器动力学[M]. 北京: 中国科学技术出版社, 2006.
[4] 屠善澄. 卫星姿态动力学与控制[M]. 北京:宇航出版社, 2001.
[5] 张庆君,王光远,郑钢铁. 光学遥感卫星微振动抑制方法及关键技术[J].宇航学报,2015,36(2):125-132. ZHANG Q J, WANG G Y, ZHENG G T.Micro-vibration attenuation methods and key techniques for optical remode sensing satellite[J].Journal of Astronautics, 2015,36(2):125-132(in Chinese).
[6] 于哲峰,杨智春. 扫描镜运动对三轴稳定卫星姿态影响研究[J]. 西北工业大学学报,2003,21(1):87-90 YU Z F, YANG Z C. Effects of scan mirror motion on the attitude of three-axix-stabilized geostantionary satellite[J]. Journal of Northwestern Polytechnical University, 2003,21(1):87-90(in Chinese).
[7] 雷静,周凤歧,周军,等. 卫星活动部件的干扰辨识与抑制[J]. 火力与指挥控制,2009,34(11):175-179. LEI J, ZHOU F Q, ZHOU J, et al. Research on disturbance identification and rejection of satellite with moving payloads[J].Fire Control & Command Control, 2009,34(11):175-179(in Chinese).
[8] COOPER J,WRIGHT J. Spacecraft in orbit identification using eigensystem realization methods[J]. Journal of Guidance, Control and Dynamics,1992,15(2):352-359.
[9] 王雪冰,吴忠. 基于干扰观测器的挠性卫星姿态滑模变结构控制. 空间控制技术与应用,2017,43(2):36-42. WANG X B,WU Z. Attitude control of flexible satellites via disturbance-observer-based sliding mode controller[J]. Aerospace Control and Application, 2017,43(2):36-42(in Chinese).
[10] 毕开波,孙剑,隋先辉. 基于干扰观测器的天基观测航天器姿态控制设计[J]. 海军航空工程学院学报,2016,31(1):17-21. BI K B, SUN J, SUI X H. Design of attitude control system of space-base observation spacecraft bsed on disturbance observer[J]. Journal of Naval Aeronautical and Astronautical University, 2016,31(1):17-21(in Chinese).
[11] LIU J Y. Space-based large spinning sensor pointing and control design and its application to NASA′s SMAP spacecraft[C]. AIAA Guidance, Navigation, and Control Conference, 2014.
[12] SLOTINE J E, LI W.Applied Nonliner Control[M]. [S.l.]:Pearson Education, Inc.,1991.