Abstract

This paper proposes an adaptive type-2 fuzzy control scheme for the longitudinal dynamics of flexible air-breathing hypersonic vehicles (FAHVs) with measurement noises. The proposed robust control scheme is composed of three parts, i.e. state estimators, altitude controller and velocity controller. Firstly, the dynamic model of hypersonic vehicles is analyzed and a control-oriented uncertainty model is built for later control scheme design. Then the new interval type-2 fuzzy logic system (IT2-FLS) based state estimators and controllers are designed sequentially. IT2-FLS is used to tackle unknown dynamics of the vehicles and the new state estimators are designed to estimate the real states from the measurement states which are contaminated by Gaussian white noises. Next, by backstepping control approach, the altitude controller and velocity controller are constructed to deal with the tracking problem for commanded velocity and altitude. In addition, the stability of the closed-loop systems is explored. Finally, simulation results verify the proposed control scheme which can achieve the desired velocity and altitude tracking performances in the presence of measurement noises.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.