Systems Engineering and Electronics ›› 2018, Vol. 40 ›› Issue (7): 1554-1559.doi: 10.3969/j.issn.1001-506X.2018.07.20

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Predictive attitude control for entry vehicles with compensation of extended states observer

WANG Tao1,2, ZHANG Hongbo1, TANG Guojian1   

  1. 1. College of Aerospace Science and Engineering, National University of Defense Technology, Changsha 410073, China;
    2. Unit 32032 of the PLA, Beijing 100094, China
  • Online:2018-06-26 Published:2018-06-27

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Abstract:

A predictive attitude control law for entry vehicles based on the extended states observer (ESO) is proposed. Attitude dynamics system is divided into attitude angle subsystem and attitude angle rate subsystem, which reduces the order of state equations. Then controllers are designed for each subsystem. Based on the dynamic inverse method the state equations are linearized. Then an analytical optimal predictive control law is deduced. To improve the robustness, ESO is introduced to estimate the model error and external disturbance. In the simulation of 6 freedom motion, the control law in this paper performs a good effect.

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