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Volume 42 Issue 7
Jul.  2016
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Journal of Beijing University of Aeronautics and Astronautics  > 2016  >  42(7): 1432-1440.
HAO Xianwei, WANG Yong, YANG Ye, et al. Flare longitudinal control for approach and landing of reusable launch vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(7): 1432-1440. doi: 10.13700/j.bh.1001-5965.2015.0441(in Chinese)
Citation: HAO Xianwei, WANG Yong, YANG Ye, et al. Flare longitudinal control for approach and landing of reusable launch vehicle[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(7): 1432-1440. doi: 10.13700/j.bh.1001-5965.2015.0441(in Chinese)
shu

Flare longitudinal control for approach and landing of reusable launch vehicle

doi: 10.13700/j.bh.1001-5965.2015.0441
  • 1.

    School of Automation Science and Electrical Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • 2. Beijing Aerospace Automatic Control Institute, Beijing 100854, China

  • 3. School of Mechatronic Engineering and Automation, National University of Defense Technology, Changsha 410073, China

  • Received Date: 01 Jul 2015
  • Publish Date: 20 Jul 2016
    Abstract
  • To solve the flare longitudinal control problem for approach and landing of reusable launch vehicle (RLV), a compound control strategy based on combined feedback control and feedforward control is proposed. The feedback control law parameters were designed. The feedforward control law parameters were designed and optimized based on the index of time-weighted height tracking error and the integral for square of error change rate. Under the premise of not affecting the stability of the system, according to feedforward control with the input compensation, the tracking precision of RLV for the flare trajectory was improved and the ground distribution of RLV was reduced. The method of control law smooth switching was proposed by initial value of integrator, which realizes the smooth switching between the different control laws of the RLV landing gear before rand after release. Simulation verifies that flare longitudinal compound control law and the method of control law smooth switching are effective.

     

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