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research-article

Nonlinear Robust Roll Autopilot Design Using Sum-of-Squares Optimization

[+] Author and Article Information
Sajjad Pak Khesal

Department of Electrical and Computer Engineering, Malek-Ashtar University of Technology, Tehran, Iran
sajjadpak70@yahoo.com

Iman Mohammadzaman

Assistant Professor of Electrical Engineering, Department of Electrical and Computer Engineering, Malek-Ashtar University of Technology, Tehran, Iran
mohammadzaman@mut.ac.ir

1Corresponding author.

ASME doi:10.1115/1.4040218 History: Received December 04, 2017; Revised May 02, 2018

Abstract

In this paper, we study nonlinear robust stabilization of roll channel of a pursuit using the sum of squares technique. Roll control is a fundamental part of flight control for every pursuit. A nonlinear state feedback controller is designed based on a new stability criterion which can be viewed as a dual to Lyapunov's second theorem. This criterion has a convexity property, which is used for controller design with convex optimization. Furthermore, using generalized S-procedure lemma robustness of the controller is guaranteed. The performance of the proposed method for roll autopilot is verified via numerical simulations.

Copyright (c) 2018 by ASME
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