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Volume 40 Issue 10
Oct.  2014
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Journal of Beijing University of Aeronautics and Astronautics  > 2014  >  40(10): 1323-1328.
Liu Keping, Zeng Jianpeng, Zhao Bo, et al. Continuous control for probe landing based on Terminal sliding mode[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(10): 1323-1328. doi: 10.13700/j.bh.1001-5965.2013.0638(in Chinese)
Citation: Liu Keping, Zeng Jianpeng, Zhao Bo, et al. Continuous control for probe landing based on Terminal sliding mode[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(10): 1323-1328. doi: 10.13700/j.bh.1001-5965.2013.0638(in Chinese)
shu

Continuous control for probe landing based on Terminal sliding mode

doi: 10.13700/j.bh.1001-5965.2013.0638

  • College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun 130012, China

  • Received Date: 06 Nov 2013
  • Publish Date: 20 Oct 2014
    Abstract
  • For the probe descending and landing safely, a continuous control method based on proportional plus derivative (PD) and nonsingular Terminal sliding mode was proposed. First, the dynamic equation was deduced in the landing site coordinate system. Then the nominal trajectory guidance method based on optimal polynomial in open-loop state was designed, by which the consumption of fuel was suboptimal. Third, the operability of PD control method was combined with the fast convergence and short adjustment time of nonsingular Terminal sliding mode control method. In the descending phase, the PD control method was adopted. In the landing phase, the continuous control method based on nonsingular Terminal sliding mode variable structure was adopted. The influence caused by uncertainty during landing was compensated by nonsingular Terminal sliding mode control, which could effectively suppress the influence of external disturbance and weaken the system chattering. Finally, simulation results demonstrate that the probe can land safely, and also show the effectiveness and robustness of the proposed method.

     

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