Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Control of powered descent phase for a Lunar lander using PID controller

PID 제어기를 이용한 달착륙선의 powered descent phase 유도제어

  • 조성진 (부산대학교 항공우주공학과 대학원) ;
  • 민찬오 (부산대학교 항공우주공학과 대학원) ;
  • 이대우 (부산대학교 항공우주공학과) ;
  • 조겸래 (부산대학교 항공우주공학과)
  • Received : 2010.12.08
  • Accepted : 2011.04.29
  • Published : 2011.05.01
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Abstract

The moon landing is composed of the de-orbit descent phase, powered descent phase, and the powered descent phase is divide into 3-sub phase of the braking, approach, final landing phase. In this paper, the lunar lander perform landing control using 3-sub phase of optimal trajectory. First, generate the reference trajectory using gauss pseudo-spectral method. Thereafter generate PID controller using altitude and velocity error in each direction. Finally the lunar lander landing system constitute using the Simulink of Matlab, and perform simulation.

달착륙은 크게 궤도이탈 단계, 동력하강 단계로 구성되어지며, 동력하강단계는 Braking, Approach, Final landing phase의 세부 3단계로 나누어진다. 본 논문에서는 동력하강 세부 3단계의 최적경로를 통하여 달착륙선의 착륙 제어를 수행하기로 한다. 우선 Gauss pseudo-spectral 방법을 통하여 기준 궤적을 생성하였고, 고도와 각 방향의 속도오차를 이용하여 PID 제어기를 생성하였다. 마지막으로 Matlab의 Simulink를 이용하여 달착륙선의 착륙단계 시스템을 구성하고 이를 이용하여 시뮬레이션을 수행하였다.

Keywords

References

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