This paper addresses the global outer synchronization problem between two fractional-order complex networks coupled in a drive-response configuration. In particular, for a given fractional-order complex network composed of Lur’e systems, an observer-type response network with non-fragile output feedback controllers is constructed. Both additive and multiplicative uncertainties that perturb the ...

In this work, a novel fractional-order extended state observer (FOESO)-based linear active disturbance rejection control (LADRC) method is firstly proposed for hypersonic vehicle (HV) to address the measurement noise problem. The uncertainty and external of an HV was discussed addressed by many different methods in recent decades. However, research with insufficient. For LADRC, anti-noise abili...

In this paper, the problem of stabilization and observer design parameter-dependent perturbed fractional-order systems is investigated. Sufficient conditions on practical Mittag–Leffler stability are given based Lyapunov technique. Firstly, using state feedback developed. Secondly, under some sufficient hypotheses, an which provides estimation constructed. Finally, numerical examples provided t...

The goal of this paper is to propose observer-based controllers, either in state-space form or in polynomial representation, for fractional diierential systems. As for linear diierential systems of integer order, polynomial representation will allow us to take advantage of the Youla parametrization in order to asymptotically reject some perturbations. This will be illustrated on a worked-out ex...

in this paper, boundary value problems of fractional order are converted into an optimal control problems. then an approximate solution is constructed from translations and dilations of a b-spline function such that the exact boundary conditions are satisfied. the fractional differential operators are taken in the riemann-liouville and caputo sense. several example are given and the optimal err...

INTRODUCTION AND OBJECTIVES Echocardiographic evaluation of right ventricular systolic function remains subject to debate because of the anatomic peculiarities of the right ventricle. Several methods have been developed for quantifying right ventricular systolic function. The aim of this study was to determine the reliability and reproducibility of a number of echocardiographic parameters by ev...