Orbital maintenance and control of spacecraft fly-around with finite-thrust
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摘要: 基于线性动力学模型,研究了有限推力下的航天器绕飞轨道保持与控制问题.首先,针对绕飞轨道控制问题推导了精确的动力学模型,给出了经过线性化的动力学方程.然后,在线性二次性最优控制理论的基础上,设计了一种针对绕飞轨道的反馈控制系统,同时为了实现有限推力,设计了一个有界的非线性环节对控制加速度进行限制.数值仿真结果证明了所设计的控制系统渐进稳定、收敛快速,并且具有良好的控制精度.最后,通过计算不同相对位置误差时轨道控制系统需用的发动机工作时间,估算了轨道维持与轨道控制的燃料消耗量.Abstract: Based on the linear dynamics model, the relevant issues of orbital maintenance and control of spacecraft fly-around with finite-thrust was studied. Firstly, aimed at the problem of orbital control of spacecraft fly-around, the exact dynamics model was derived and the linear dynamics equation was presented. Secondly, based on the linear quadratic optimal control theory, the feedback control system for fly-around orbit was designed. To realize finite-thrust, a limited nonlinear function to restrict the control acceleration was presented. The numerical simulation show the control system has asymptotic stability, faster convergence rate and higher control accuracy. Lastly, from calculating the engine-s working time of different relative position errors, estimate the cost of fuel for orbit control and maintenance.
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Key words:
- fly-around /
- orbital control /
- optimal control /
- finite-thrust
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[1] 林来兴.绕飞轨道动力学和控制策略[J].宇航学报,2000,21(4):100-106 Lin Laixing.Fly-around orbit dynamics and control stratagem[J].Journal of Astronautics,2000,21(4):100- 106(in Chinese) [2] 林来兴.小卫星围绕空间站飞行动力学和控制研究[J].中国空间科学技术,1999,12(6):1-6 Lin Laixing.A study on dynamics and control of small satellite flying around space station[J].Chinese Space Science and Technology,1999,12(6):1-6(in Chinese) [3] Hong Wong, Kapila V, Sparks A G.Adaptive output feedback tracking control of spacecraft formation[J].International Journal of Robust and Nonlinear Control,2002(12):117-139 [4] Yang Guang, Yang Qingsong, Kapila V, et al.Fuel optimal manoeuvres for multiple spacecraft formation reconfiguration using multi-agent optimization[J].International Journal of Robust and Nonlinear Control,2002(12):243-283 [5] 张玉锟.卫星编队飞行的动力学与控制技术研究 .长沙:国防科技大学航天与材料工程学院,2002 Zhang Yukun.Research on dynamics and control technology of spacecraft formation flying .Changsha:College of Aerospace and Material Engineering, National University of Defense Technology,2002(in Chinese) [6] 郑大钟.线性系统理论[M].第2版.北京:清华大学出版社,2002:324-334 Zheng Dazhong.Linear system theory[M].2nd ed.Beijing:Tsinghua University Press,2002:324-334(in Chinese) [7] 魏春岭,张洪华.编队飞行卫星相对轨道的自主确定算法[J].航天控制,2003,21(3):41-47 Wei Chunling,Zhang Honghua.Autonomous determination of relative orbit for formation flying satellites[J].Aerospace Control,2003,21(3):41-47(in Chinese) -
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