Non-Fragile Robust Control for Lunar Rotary-Drill Spamling Technology

Abstract

Rotatory drilling is a key technology to lunar sampling mission. Model perturbation of rotatory drilling mechanism exists in lunar complex environment. And system disturbance always influences the control system performance. Robust of controller plays an important role in sampling mission. Perturbation and disturbance was analyzed in the state space description. The state feedback non fragile robust controller was induced with linear matrix inequality method. Simulation results proved that the controller is inner stable with bounded model perturbation and has suppression ability to disturbance.

Keywords

Lunar sampling / rotatory drilling / non fragile / robust control

References

[1] 叶培建,彭兢.深空探测与我国深空探测展望[J].中国工程科学,2006,8(10):13-18.[Ye P J,Peng J. Deep space exploration and its prospect in China[J]. Engineering Science,2006,8(10):13-18.]
[2] 欧阳自远. 我国月球探测的总体科学目标与发展战略[J]. 地球科学进展,2004,19(3):355-358.[Ouyang Z Y.Scientific objectives of Chinese lunar exploration project and development strategy[J]. Advance in Earth Sciences,2004,19(3):355-358.]
[3] 杨帅,孙京,殷参,等.地外星体土壤取样机构技术[J].航天器工程,2011,20(4):138-144.[Yang S, Sun J, Yin S, et al. Soil sampling technology on extraterrestrial bodies[J]. Spacecraft Engineering,2011,20(4):138-144.]
[4] 刘志全,庞彧,李新立.深空探测自动采样机构的特点及应用[J].航天器工程.2011,20(3) :120-125.[Liu Z Q, Pang Y, Li X L. Characteristics and applications of automatic sampling mechanisms for deep space exploration[J]. Spacecraft Engineering, 2011,20(3) :120-125.]
[5] Apollo program summary report synopsis of the Apollo program activites and technology for lunar exploration[R]. Houston: Lyndon B. Johnson Space Center,NASA-TM-X-68725,1975.
[6] Yoseph Bar-Cohen, Kris Zacny. Drilling in extreme environments-penetration and sampling on Earth and other planets[M]. Weinheim: Wiley-VCH, 2009:48-51.
[7] Grant H Heiken,David T Vaniman, Bevan M French. Lunar sourcebook-a user's guide to the moon[M]. Cambridge: Cambridge University Press, 1991:322-328.
[8] 俞立.鲁棒控制—线性矩阵不等式处理方法[M].北京:清华大学出版社,2002:8-9.[Yu L.Robust control—linear matrix inequality approach[M]. Beijing:Tsinghua University Press, 2002:8-9.]
[9] 贾英明.鲁棒H∞控制[M].北京:科学出版社,2007:198-199.[Jia Y M. Robust H∞ control[M].Beijing: Science Press, 2007:198-199.]