Parameter estimation of various multi-component stationary and non-stationary signals in multiplicative and additive noise is considered in this paper. It is demonstrated that the parameters of complex sinusoidal signal, complex frequency modulated (FM) sinusoidal signal and complex linear chirp signal in presence of additive and multiplicative noise can be estimated using a new definition of t...

BACKGROUND Uropathogenic Escherichia coli (UPEC) with its virulence factors is the most prevalent cause of urinary tract infection (UTI). OBJECTIVES This study aimed to determine the occurrence of fim, pap, sfa, and afa genes among 100 UPEC isolates collected from patients diagnosed with UTI. MATERIALS AND METHODS A total of 100 UPEC isolates were obtained from urine samples of patients wit...

In quite a few languages, the wh-phrase corresponding to English ‘what’ can be used to ask for a reason, in addition to a canonical reason wh-phrase corresponding to English ‘why’: Japanese and Turkish are, among other languages, mainly considered in this paper. It has been reported that reason WHAT-words have more restrictions than WHY-words (e.g., Kurafuji 1996). Thus, the goal of this paper ...

Field oriented control (FOC) can provide an ability to rapidly and accurately control torque and speed of induction motors (IM). However, at lower than rated loads, which is a condition that many machines experience for significant portion of their service life, the efficiency is greatly reduced. This paper describes the use of supported vector machine (SVM) to optimize the efficiency of IM dri...

In this paper, an implementation of intelligent controller for speed control of an induction motor (IM) using indirect vector control method has been developed and analyzed in detail. The project is complete mathematical model of field orientation control (FOC) induction motor is described and simulated in MATLAB for studies a 50 HP(37KW), cage type induction motor has been considered . The com...

Attempts up to now to develop an analog realization of a fractional order control (FOC) element have focused on constructing an approximation of the FOC using ideal resistor/capacitor networks.[1] In fact, an ideal capacitor cannot exist. An ideal dielectric in a capacitor having an impedance of the form 1/(jωC) would violate causality. It seems sensible to look for dielectric materials exhibit...

Field oriented control (FOC) and direct torque control (DTC), also called vector control, are most famous control methods in high-performance motor applications. If we want to specify the basic handicaps of both methods: the FOC has parameter dependence while the DTC has high torque ripples. This paper proposes a new adaptive bandwidth approach to reduce torque ripples in DTC controlled inducti...

Higher-order statistics can be used for time delay estimation (TDE) to suppress spatially correlated Gaussian noise, since the higher-order cumulant of Gaussian signal is always zero. However, third-order statistics is invalid for those signals with zero skewness, speech signal as a typical one. In this paper, the fourth-order cumulant (FOC) spectrum is derived, based on which a TDE algorithm t...

although, single-sided linear induction motor (slim) utilization has increased in railway applications due to their numerous advantages in comparison to rotational induction motors (rim), there are some sophistication in their mathematical models and electrical drive. this paper focuses on the problems of slim modeling, with assuming end-effect on the basis of field oriented control (foc) as a ...

The paper introduces a new method for vector control of PMSM (Permanent Magnet Synchronous Motor) motors called theta-FOC. This combines the advantages simple sinusoidal and Field Oriented Control (FOC). proposes introducing an additional parameter that determines electrical angle between motor’s voltage space rotor magnetic flux axis. classical was modified to reduce number necessary calculati...