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Automatic Control and Computer Sciences

, Volume 52, Issue 3, pp 198–207 | Cite as

A Novel Robust Flight Controller Design for an Air-Breathing Hypersonic Vehicle

  • Weiqiang Tang
  • Wenkun Long
  • Haiyan Gao
Article
  • 6 Downloads

Abstract

A novel robust flight control design method is proposed for a generic air-breathing hypersonic vehicle based on a state-dependent Riccati equation technique and a nonlinear disturbance observer. The highly nonlinear dynamics of the hypersonic vehicle are firstly brought to a linear structure having a state-dependent coefficient form. And then a state-dependent Riccati equation is solved at each sampling moment to obtain a nonlinear feedback optimal control law. In order to enhance robustness of the closed-loop system, a nonlinear disturbance observer is introduced to estimate the uncertainty caused by parametric variations and external disturbances. The resulting composite controller achieves not only promising robustness and disturbance rejection performance but also flexible adjustment in the response time. Compared to a Kriging controller, the proposed controller has great advantages in the system response time and robustness. The feasibility of the proposed method is validated by simulation results.

Keywords

air-breathing hypersonic vehicles robust flight control state-dependent Riccati equation nonlinear disturbance observer robustness 

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Copyright information

© Allerton Press, Inc. 2018

Authors and Affiliations

  1. 1.College of Electrical and Information EngineeringLanzhou University of TechnologyLanzhouChina
  2. 2.Key Laboratory of Gansu Advanced Control for Industrial ProcessesLanzhou University of TechnologyLanzhouChina
  3. 3.National Experimental Teaching Center of Electrical and Control Engineering Lanzhou University of TechnologyLanzhouChina
  4. 4.High-Voltage Key Laboratory of Fujian ProvinceXiamen University of TechnologyXiamenChina

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