In this paper we consider decision making under uncertainty when the probability of the states of nature is not known a priori and the outcomes of each alternative are characterized only approximately. The fuzzy approach is very useful to handle such situations. Here we take into consideration both the best and the worst consequences of a decision problem. An optimist expects the best to occur ...

A Schiff base, (E)-ethyl-4-(2-oxoacenaphthylen-1(2H)-ylideneamino)benzoate, (E4AB) had been synthesized in good yield by the acid-catalyzed condensation reaction of acenaphthenequinone and ethyl-4-aminobenzoate in methanolic solution. The synthesized compound was elucidated by elemental analysis (CHN), FTIR, H-NMR, C-NMR and single crystal X-ray diffraction. E4AB crystallized in the monoclinic ...

In this article, the concept and definitions of Fractional Order Moment (FOM) Cumulant (FOC) are proposed, which is based on fractional derivative order Moment-generating function Cumulant-generating stochastic processes. The moment cumulant defined an expanded set from positive integer to whole real. This development not only provides a new technology for signal processing, also complements ex...

background: functional ovarian cysts (foc) are one of the most common gynecological problems among women of reproductive age. some studies have shown that diet may affect the function of the ovaries, so this study was performed to determine the association between the amount of dietary fat and functional ovarian cysts. methods: this case-control study was performed on 264 female patients (132 w...

Voltage-lift is a widely used technique in DC–DC converters to step-up output voltage levels. Several traditional and advanced control techniques applicable power electronic (PEC) have been reported utilized for voltage-lift applications. Similarly, recent years the implementation of fractional-order controllers (FOC) PEC applications has gained interest, aiming improve system performance, vali...

This paper presents the methodology of tuning two position servo drive systems with Permanent Magnet Synchronous Motors (PMSM): Field Oriented Control (FOC) based on current model of motor and FOC based on voltage model of motor. These two strategies are Vector Control (VC) methods and provide a solution for high performance drives but the choice one of these algorithms determines the type of i...

This paper presents a novel method to achieve good performance of an extended Kalman filter (EKF) for speed estimation of an induction motor drive. A real-coded genetic algorithm (GA) is used to optimize the noise covariance and weight matrices of the EKF, thereby ensuring filter stability and accuracy in speed estimation. Simulation studies on a constant V/Hz controller and a field-oriented co...

Induction motors are most commonly used motor type in industrial applications because of its well-known advantages like robust structure, cheaper prices etc. Today, field oriented control (FOC) and direct torque control (DTC) methods, also called vector control, are most famous control methods in high-performance applications. The main structural and behavioural differences between the both met...

In this short paper we present a discrete-time eld oriented controller (FOC) for current-fed induction motors which insures global asymptotic speed regulation as well as rotor ux norm tracking. To the best of our knowledge, this is the rst time such a result is rigourously established for a controller implemented in discrete-time. To insure global stability a condition on the reference for the ...