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针对航天器受液体燃料晃动及内外周期性微小激励耦合影响产生混沌运动的问题，提出了基于神经网络干扰观测器的自适应H∞鲁棒控制方案，以实现充液航天器混沌姿态运动的消除与液体燃料晃动的抑制. 基于神经网络的非线性逼近能力设计干扰观测器，自适应跟踪补偿液体晃动、参数不确定及外扰引起的耦合扰动，解决液体燃料晃动角速度及外扰不易直接测量的问题，提高控制器对系统不确定的自适应能力及液体晃动的抑制能力. 同时考虑观测误差与模型不精确问题，利用H∞控制策略提高控制器的鲁棒性. 通过与现有常用控制策略的对比仿真研究，验证了控制方案的有效性及优势.To investigate the control problem of chaotic motion in spacecraft system caused by the coupled effect of liquid fuel sloshing and small periodic disturbance inside or outside spacecraft, the H∞ control strategy based on neural network disturbance observer is presented, which makes liquid spacecraft disengage chaos and liquid fuel sloshing which are inhibited. Disturbance observer is designed to track and compensate the coupled disturbance caused by liquid sloshing, parameter uncertainty, and external disturbance based on the nonlinear approximation capability of neural network. Taking into account the problems of observation error and model inaccuracy, the H∞ control strategy can be applied to improve the robustness of the control system. Compared with the existing common control algorithm, the proposed strategy proves to be valid and better at adaptability and robustness by simulations.
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Keywords:
- attitude motion of spacecraft /
- chaotic control /
- liquid sloshing suppression /
- disturbance observer
[1] Kuang J, Leung A Y T, Tan S 2003 Physica D 186 1
[2] Shirazi K H, Ghaffari-Saadat M H 2004 International Journal of Non-Linear Mechanics 39 785
[3] Liu Y Z, Chen L Q 2012 Chaos in Attitude Dynamics of Spacecraft (1st Ed.) (Tsinghua University Press) p63
[4] Zhong S, Chen Y S 2012 Chin. Phys. B 21 124701
[5] Ibrahim R A, Pilipchuk V N, Ikeda T 2001 Applied Mechanics Review 54 133
[6] Li Q, Ma X R, Wang T S 2011 Acta Astronautica 68 91
[7] Zhou L Q, Chen Y S, Chen F Q 2009 Acta Astronautica 65 1628
[8] Ahmad1 S, Yue B Z 2012 Chin. Phys. Lett. 29 060501
[9] Doroshin A V 2014 Ata Astronautica 94 563
[10] Aslanov V, Yudintsev V 2012 Chaos, Solitons & Fractals 45 1100
[11] Jia F L, Xu W, Li H N, Hou L Q 2013 Acta Phys. Sin. 62 100503 (in Chinese)[贾飞蕾, 徐伟, 李恒年, 侯黎强 2013 62 100503]
[12] Thomas S S, Kang J Y, Victoria L C 2010 Proceeding of AIAA Guidance, Navigation and Control Conference Toronto, Canada, August 2-5, 2010 p1
[13] Sira-Ramirez H, Fliess M 2002 Proceedings of American Control Conference Hilton Anchorage and Egan Convention Center Anchorage, Alaska, USA, May 8-10, 2002 p2909
[14] Kurode S, Bandyopadhyay B, Gandhi P S 2008 International Workshopon Variable Structure Systems Antalya, Turkey, July, 2008 p367
[15] Yue B Z, Xie J F 2007 Journal of Sound and Vibration 302 643
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[1] Kuang J, Leung A Y T, Tan S 2003 Physica D 186 1
[2] Shirazi K H, Ghaffari-Saadat M H 2004 International Journal of Non-Linear Mechanics 39 785
[3] Liu Y Z, Chen L Q 2012 Chaos in Attitude Dynamics of Spacecraft (1st Ed.) (Tsinghua University Press) p63
[4] Zhong S, Chen Y S 2012 Chin. Phys. B 21 124701
[5] Ibrahim R A, Pilipchuk V N, Ikeda T 2001 Applied Mechanics Review 54 133
[6] Li Q, Ma X R, Wang T S 2011 Acta Astronautica 68 91
[7] Zhou L Q, Chen Y S, Chen F Q 2009 Acta Astronautica 65 1628
[8] Ahmad1 S, Yue B Z 2012 Chin. Phys. Lett. 29 060501
[9] Doroshin A V 2014 Ata Astronautica 94 563
[10] Aslanov V, Yudintsev V 2012 Chaos, Solitons & Fractals 45 1100
[11] Jia F L, Xu W, Li H N, Hou L Q 2013 Acta Phys. Sin. 62 100503 (in Chinese)[贾飞蕾, 徐伟, 李恒年, 侯黎强 2013 62 100503]
[12] Thomas S S, Kang J Y, Victoria L C 2010 Proceeding of AIAA Guidance, Navigation and Control Conference Toronto, Canada, August 2-5, 2010 p1
[13] Sira-Ramirez H, Fliess M 2002 Proceedings of American Control Conference Hilton Anchorage and Egan Convention Center Anchorage, Alaska, USA, May 8-10, 2002 p2909
[14] Kurode S, Bandyopadhyay B, Gandhi P S 2008 International Workshopon Variable Structure Systems Antalya, Turkey, July, 2008 p367
[15] Yue B Z, Xie J F 2007 Journal of Sound and Vibration 302 643
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