自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 24    No. 3    March 2017

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ESO-based robust predictive control of lunar module with fuel sloshing dynamics
SONG Zheng-yu(宋征宇)1, 2, YAN Gang-feng(颜钢锋)1, ZHAO Dang-jun(赵党军)3

1. College of Electrical Engineering, Zhejiang University, Hangzhou 310058, China;
2. Beijing Aerospace Automatic Control Institute (BAACI), Beijing 100854, China;
3. School of Aeronautics and Astronautics, Central South University, Changsha 410083, China

Abstract:An extended-state-observer (ESO) based predictive control scheme is proposed for the autopilot of lunar landing. The slosh fuel masses exert forces and torques on the rigid body of lunar module (LM), such disturbances will dramatically undermine the stability of autopilot system. The fuel sloshing dynamics and uncertainties due to the time-varying parameters are considered as a generalized disturbance which is estimated by an ESO from the measured attitude signals and the control input signals. Then a continuous-time predictive controller driven by the estimated states and disturbances is designed to obtain the virtual control input, which is allocated to the real control actuators according to a deadband logic. The 6-DOF simulation results reveal the effectiveness of the proposed method when dealing with the fuel sloshing dynamics and parameter perturbations.

 

Key words: extended state observer; predictive controller; parameter perturbation; fuel sloshing; lunar module

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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