نتایج جستجو برای: foc p
تعداد نتایج: 1270211 فیلتر نتایج به سال:
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...
Gastrointestinal parasitism is a global problem for grazing ruminants which can be addressed in sustainable way through breeding animals to more resistant disease. This study estimates the genetic parameters of common and new disease phenotypes associated with natural nematode coccidian infection Scottish Blackface sheep underpin future improvement strategies parasite control. Data on faecal eg...
In this paper, different electric motors are studied and compared to see the benefits of each motor and the one that is more suitable to be used in the electric vehicle (EV) applications. There are five main electric motor types, DC, induction, permanent magnet synchronous, switched reluctance and brushless DC motors are studied. It is concluded that although the induction motors technology is ...
The current study assessed the anticoccidial efficacy of chitosan nanoencapsulated bromelain (CNB) against coccidiosis in goats. Bromelain was extracted from pineapple peels using standard methods while oral solution CNB prepared manufacturing methods. vivo done on fifteen healthy male goats naturally infected with coccidia. were divided into three groups consisting treatment (90 and 270 mg/Kg ...
Phylloplane fungi is a non-pathogenic on the leaf surface that can be used to control plant diseases caused by pathogens. One of most damaging banana fusarium wilt, pathogenic Fusarium oxysporum f. sp. Cubense (Foc). Mangrove Rhizophora apiculate widely distributed and high-diversity area where microorganisms produce anti-microbial compounds flourish. This as biological agent. study aims determ...
Sophisticated torque-current control is required in inertial load-drive applications, such as electric vehicles and railway vehicles, over a wide speed range. However, the conventional indirect-field-orientation (FOC) lacks current response during transient because feedforward slip-angular-frequency causes secondary flux fluctuation. Therefore, this article proposes FOC with first-order-delay c...
conclusions these results indicate that the pcr method is a powerful genotypic assay for the detection of adhesin-encoding operons. thus, this assay can be recommended for clinical use to detect virulent urinary e. coli strains, as well as epidemiological studies. materials and methods a total of 100 upec isolates were obtained from urine samples of patients with uti. the prevalence of 5 virule...
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