In this paper we present an application of the propositional SATisfiability environment to computing some simple orthogonal matrices and some interesting tasks in the area of cryptanalysis. We show how one can code a search for some kind of desired objects as a propositional formulae in such a way that their satisfying valuations code such objects. Some encouraging (and not very encouraging) ex...

Abstract Voltage type flux observer has attracted much attention because of its less mathematical calculations and ease implementation. The only issue with the estimation approach is integration mechanism; using a pure integrator may cause saturation DC bias issue, whereas low pass filter (LPF) self-adaptive band-pass (SABPF) would result in magnitude phase angle errors. This work offers an imp...

The paper deals with approximation of systems with the dominant first order dynamics by the Integrator Plus Dead Time (IPDT) model based on the analysis of the nonsymmetrical oscillations with possible offset arising typically under relay control. The analytical derivation is illustrated by results achieved by identification of optical plant. The results are experimentally verified by PI contro...

The paper deals with the stability analysis of time-delay reset control systems, for which the resetting law is assumed to satisfy a time-dependent condition. A stability analysis of the closed-loop system is performed based on an appropriate sampled-data system. New linear matrix inequality (LMI) conditions are proposed to ensure the exponential stability of the closed-loop resulting of the co...

This paper aims to develop a fractional control approach for quadrotor trajectory tracking. A fractional-order integrator (PI λ ) with feedback derivative scheme is designed each state of the MIMO system. The controller stabilizes initially unstable decoupled states and widens stability, while P...

The major problem with photovoltaic systems is to extract the maximum power better performance and good efficiency as long there are large variations in atmospheric conditions. To do this, we made a comparative analysis between two controllers, Proportional-Integrator (PI) backstepping based on system up of parts, first Photovoltaic (PV) panels which used convert solar irradiation an electric c...

In this paper, based on feedback linearization control method and using a special PI (propotational integrator) regulator (IP) in combination with a feed-forward controller, a three-phase induction servo-drive is speed controlled. First, an observer is employed to estimate the rotor d and q axis flux components. Then, two input-output state variables are introduced to control the dynamics of to...

This paper proposes a stand-alone photovoltaic (PV) system based on a DC-DC positive output super lift Luo (POSLL) converter. A conventional sliding mode control, a sliding mode controller using a simple sign function and a linear controller using proportional integrator (PI) are used for the control of the PV panel voltage and POSLL converter inductor current and these methods are compared tog...