نتایج جستجو برای: foc

تعداد نتایج: 604  

2011
Manuel A. Duarte-Mermoud Juan C. Travieso-Torres Ian S. Pelissier Humberto A. González

In this paper two new schemes for induction motor control are proposed and compared. Both approaches are based on the concept of adaptive passivity. First, a technique using the scheme of field oriented control (FOC) is proposed, and by means of an adaptive state feedback, a passive equivalent system is obtained. Furthermore, making use of the novel torque-flux control principle (TFCP), the pro...

2012
Y. Sumith J. S. V. Siva Kumar

Generally speed measurement is done with sensor, but disadvantage of sensor is difficult to measure speed at low speeds with sensor. These difficulties are eliminated by using sensor less Flux Orientation Controlled (FOC) . This paper proposes a Model Reference Adaptive System (MRAS) for estimation of rotor speed in FOC. An Induction motor is developed in stationary reference frame and Space Ve...

2017
Jinyan Zhou Min Wang Yuming Sun Zechen Gu Ruirui Wang Asanjan Saydin Qirong Shen Shiwei Guo

Cucumber Fusarium wilt, induced by Fusarium oxysporum f. sp. cucumerinum (FOC), causes severe losses in cucumber yield and quality. Nitrogen (N), as the most important mineral nutrient for plants, plays a critical role in plant-pathogen interactions. Hydroponic assays were conducted to investigate the effects of different N forms (NH₄⁺ vs. NO₃‒) and supply levels (low, 1 mM; high, 5 mM) on cucu...

Journal: :Journal of psychosomatic obstetrics and gynaecology 2013
Birgitta Salomonsson Mats T Gullberg Siw Alehagen Klaas Wijma

OBJECTIVE To explore how childbirth self-efficacy, i.e. outcome expectancy and efficacy expectancy, was associated with fear of childbirth (FOC) and how efficacy expectancy and FOC, respectively were related to socio-demographic characteristics, mental problems and preference for a caesarean section. METHODS In this cross-sectional study, a consecutive sample of 1000 pregnant nulliparous wome...

2016
Yashwant Kumar Limin Zhang Priyabrata Panigrahi Bhushan B. Dholakia Veena Dewangan Sachin G. Chavan Shrikant M. Kunjir Xiangyu Wu Ning Li Pattuparambil R. Rajmohanan Narendra Y. Kadoo Ashok P. Giri Huiru Tang Vidya S. Gupta

Molecular changes elicited by plants in response to fungal attack and how this affects plant-pathogen interaction, including susceptibility or resistance, remain elusive. We studied the dynamics in root metabolism during compatible and incompatible interactions between chickpea and Fusarium oxysporum f. sp. ciceri (Foc), using quantitative label-free proteomics and NMR-based metabolomics. Resul...

Journal: :Eur. J. Control 2012
Víctor M. Hernández Guzmán Víctor Santibáñez

The paper by Hernandez-Guzman and Santibanez is an interesting contribution to the induction motor field oriented control (FOC) literature. Standard FOC schemes can only prove local asymptotic regulation to the speed and flux references. The authors modify the classical indirect voltage-fed FOC methodology and propose the use of a saturated PI velocity control loop to ensure global asymptotic r...

2013
Gayatri S. Gurjar Ashok P. Giri Vidya S. Gupta

Fusarium oxysporum f. sp. ciceri (Foc), one of the most important fungal pathogen of chickpea, is a constant threat to this crop plant. In the present study gene expression analysis of chickpea roots during Foc infection was performed using various approaches. cDNAs derived from total mRNA during infection process of susceptible (JG62) and resistant (Digvijay) cultivars, were amplified using ra...

Journal: :Agriculture 2022

This study aimed to isolate rhizobacteria belonging the genus Pseudomonas with plant-growth-promoting properties that can be used in control of chickpea wilt disease caused by Fusarium oxysporum f. sp. ciceris (Foc). The production antifungal compounds isolated was assessed against two Foc isolates, coded Foc-S1 and Foc-S2. Strains E1FP13, E1FP4, E1PP7 were most effective Foc-S1, percentages 52...

2017
Mengzhe Guo Xiao Li Liyan Zhang Dantong Liu Wencheng Du Dengyang Yin Nan Lyu Guangyu Zhao Cheng Guo Daoquan Tang

The DNA demethylation pathway has been discovered to play a significant role in DNA epigenetics. This pathway removes the methyl group from cytosine, which is involved in the oxidation of 5-methylcytosine to 5-hydroxymethylcytosine (5-hmC) by ten-eleven translocation (TET) proteins. Then, 5-hmC can be iteratively oxidized to generate 5-formylcytosine (5-foC) and 5-carboxylcytosine (5-caC). Howe...

Journal: :CoRR 2014
Yilmaz Korkmaz Fatih Korkmaz Ismail Topaloglu Hayati Mamur

Nowadays, asynchronous motors have wide range use in many industrial applications. Field oriented control (FOC) and direct torque control (DTC) are commonly used methods in high performance vector control for asynchronous motors. Therefore, it is very important to identify clearly advantages and disadvantages of both systems in the selection of appropriate control methods for many industrial ap...

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