Robust integral controller design based on composite nonlinear feedback in uncertain systems with constrained inputs and external disturbances, By Valiollah Ghaffari

Research

Title	Robust integral controller design based on composite nonlinear feedback in uncertain systems with constrained inputs and external disturbances
Type	Article
Keywords	composite nonlinear feedback, input saturation, integral control, linear matrix inequality, robust control
Journal	OPTIMAL CONTROL APPLICATIONS & METHODS
DOI	https://doi.org/10.1002/oca.3044
Researchers	Valiollah Ghaffari (Second researcher) , Amin Torabi Jahromi (Third researcher)

Abstract

In this article, to enhance the transient performances in constrained uncertain systems, a control technique based on linear matrix inequality (LMI) is characterized to the robust integral composite nonlinear feedback (CNF) controller design. To achieve this aim, considering the inputs limitations and the uncertainties, the regulation is transformed into a minimization subjected to several LMIs. Solving an optimization in real-time, the gains of the controller are calculated. So, the regulation and the disturbance rejection are effectively handled employing the presented control law. Compared with the existing integral methodology, the provided simulations validate the applicability of the robust integral CNF control law in uncertain systems.