Study on Robust Multiple Sliding Surface Guidance Method for Autonomous Small Celestial Body Landing

Abstract

The irregularity of small celestial bodies and lack of observation data make the dynamical environment around them complicated, thus the landing dynamic model has relatively large uncertainty. Using robust multiple sliding surface guidance method that derives two sliding surfaces and makes the state of the lander reach the surfaces successively can achieve the goal of precise small celestial body landing. The impact of the guidance parameters on fuel consumption is shown through parameter analysis,and principles of parameterselection for the guidance law are given. Monte Carlo simulations considering external environment perturbations, initial state errors and navigation errors show that the multiple sliding surface guidance method can achieve precision landing in the uncertain environment of a small celestial body, demonstrating robustness. The multiple sliding surface guidance method has high precision and fine robustness, needs no reference trajectory, demonstrates good real-time performance, and thus matches the requirement of autonomous precision small celestial body landing.

Keywords

small celestial body / autonomous landing / multiple sliding surface guidance / robustness / reference selection

References

[1] 崔平远,乔栋.小天体附近轨道动力学与控制研究现状与展望[J].力学进展,2013,43(5):526-539.[Cui P Y, Qiao D. Research progress and prospect of orbital dynamics and control near small bodies[J]. Advances in Mechanics, 2013,43(5):526-539.]
[2] Dunham D W, Farquhar R W, Mcadams J V, et al. Implementation of the first asteroid landing[J]. Icarus, 2002,159(2):433-438.
[3] Uo M, Shirakawa K, Hashimoto T, et al. Hayabusa's touching-down to Itokawa-Autonomous guidance and navigation[J]. The Journal of Space Technology and Science, 2006,22(1):41.
[4] Hand E. Philae probe makes bumpy touchdown on a comet[J]. Science, 2014,346(6212):900-901.
[5] Harl N, Balakrishnan S N. Reentry terminal guidance through sliding mode control[J]. Journal of Guidance, Control, and Dynamics, 2010,33(1):186-199.
[6] Furfaro R, Wibben D R. Mars atmospheric entry guidance via multiple sliding surface guidance for reference trajectory tracking[C]//AIAAAAS Astrodynamics Specialist Confer-ence.[S.l]:AIAA, 2012,4435:1-16.
[7] Furfaro R, Cersosimo D, Wibben D R. Asteroid precision landing via multiple sliding surfaces guidance techniques[J]. Journal of Guidance, Control, and Dynamics, 2013,36(4):1075-1092.
[8] Miller J K, Konopliv A S, Antreasian P G, et al. Determination of shape, gravity, and rotational state of asteroid 433 Eros[J]. Icarus, 2002,155(1):3-17.
[9] Wang H, Xie M, Zhang P, et al. Research of asteroid landing trajectory optimization based on gauss pseudo-spectral method[C]//Intelligent Human-Machine Systems and Cybernetics (IHMSC), 2014 Sixth International Conference.[S.l]:IEEE, 2014,2:26-29.