Robust and anti-windup control of air-breathing hypersonic cruise vehicle

Abstract

This paper describes the design of robust and anti-windup controllers for an air-breathing hypersonic vehicle model. Firstly, a control algorithm is presented to design robust and anti-windup controllers for linear systems with modeling uncertainties and input saturation nonlinearities. Based on the characterization of modeling uncertainties and saturation nonlinearities via integral quadratic constraints (IQCs), the analysis and synthesis conditions are presented in terms of scaled linear matrix inequalities (LMIs). Secondly, the proposed algorithm is applied in the design of flight control system with inner/outer loop structure. The inner-loop control aims to enhance attitude stability and augment domain of attraction. The outer-loop control acts to provide precise tracking performance for velocity and flight path angle. Finally, the designed controllers are evaluated on the nonlinear simulation model to demonstrate the effectiveness of the algorithm and application.