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Open AccessArticle

Vector-Coupled Flight Controller Design Based on Multivariable Backstepping Sliding Mode

College of Intelligent Science and Technology, National University of Defense Technology, Changsha 410073, China
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Symmetry 2019, 11(10), 1225; https://doi.org/10.3390/sym11101225
Received: 25 August 2019 / Revised: 23 September 2019 / Accepted: 24 September 2019 / Published: 1 October 2019
This study aims to address the issues of the simultaneous control of the angle of attack, sideslip angle, and airspeed of a flight in a vectorial form. A vector controller, with a symmetry structure, is developed to transform the attitude and speed control problem into a space-vector tracking problem. We first establish flight vector-coupled dynamics, i.e., describe velocity and angular-velocity vectors in a body-fixed frame, and then propose a multivariable backstepping sliding mode control algorithm along with nonlinear disturbance observers for the vectorial dynamics. The theoretical analysis ensures that the states of the system can be enforced to reach a small neighborhood of the desired sliding manifold. The results of the numerical simulation illustrate the effectiveness and robustness of the combined vector-control scheme.
Keywords: flight control; vector-coupled; vector sliding mode; vector backstepping; nonlinear disturbance observer flight control; vector-coupled; vector sliding mode; vector backstepping; nonlinear disturbance observer
MDPI and ACS Style

Han, Y.; Li, P.; Ma, J. Vector-Coupled Flight Controller Design Based on Multivariable Backstepping Sliding Mode. Symmetry 2019, 11, 1225.

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