نتایج جستجو برای: srm drive circuit

تعداد نتایج: 196462  

2007
Juhn Suk Yoo Hojin Lee Jerzy Kanicki Chang-Dong Kim In-Jae Chung

Juhn Suk Yoo Hojin Lee Jerzy Kanicki Chang-Dong Kim In-Jae Chung Abstract — A novel pixel circuit for electrically stable AMOLEDs with an a-Si:H TFT backplane and top-anode organic light-emitting diode is reported. The proposed pixel circuit is composed of five a-Si:H TFTs, and it does not require any complicated drive ICs. The OLED current compensation for drive TFT threshold voltage variation...

2006
Juhn S. Yoo Hojin Lee Jerzy Kanicki Chang-Dong Kim In-Jae Chung

Abstract: This paper reports a new pixel circuit suitable for enhancing the reliability of AM-OLED with the a-Si:H TFT backplane and top-anode OLED structure. The propose pixel circuit is composed of 5 a-Si:H TFTs for switching and driving device, and it does not require any complicated drive ICs. The compensation of OLED current against threshold voltage shift of the drive TFT has been verifie...

2011
Krzysztof TOMCZUK Marcin PARCHOMIUK

In the article author describes a measurements of generated torque and flux in SRM for different rotor positions. The measurements are compared with simulations results. At the end of the article author describes a algorithm of realization traction drive characteristic required by mechanical vehicles. Streszczenie. W artykule autor prezentuje wyniki pomiarów momentu oraz strumienia elektromagne...

2014
T. V. Vorburger T. Brian Renegar A. X. Zheng J-F. Song J. A. Soons

Parameters of surface roughness and step height are currently measured at the National Institute of Standards and Technology (NIST) by means of a computerized/stylus instrument. For roughness height parameters, we use a calibration ball as a master to calibrate the instrument to be employed during a measurement. Profiles of the calibrating master and the roughness sample under test are stored i...

Journal: :Journal of AOAC International 2010
Katherine E Sharpless Richard M Lindstrom Bryant C Nelson Karen W Phinney Catherine A Rimmer Lane C Sander Michele M Schantz Rabia O Spatz Jeanice Brown Thomas Gregory C Turk Stephen A Wise Laura J Wood James H Yen

Standard Reference Material (SRM) 1849 Infant/Adult Nutritional Formula has been issued by the National Institute of Standards and Technology (NIST) as a replacement for SRM 1846 Infant Formula, issued in 1996. Extraction characteristics of SRM 1846 have changed over time, as have NIST's analytical capabilities. While certified mass fraction values were provided for five constituents in SRM 184...

Journal: :Journal of environmental management 2015
Jingwen Qu Emilson Caputo Delfino Silva

We study the effects of environmental policy commitments in a futuristic world in which solar radiation management (SRM) can be utilized to reduce climate change damages. Carbon and sulfur dioxide emissions (correlated pollutants) can be reduced through tradable permits. We show that if nations simultaneously commit to carbon permit policies, national SRM levels rise with carbon quotas. Alterna...

ژورنال: :مرتع و آبخیزداری 2009
علی فتح زاده محمد مهدوی r.c. bales علی اکبر آبکار حسن عسکری شیرازی

در حوزه های آبخیز کوهستانی، ذوب برف و رواناب بدست آمده از آن سهم عمده ای در تولید جریان و تأمین منابع آب دارد. مدل srm از جمله مدل های هیدرولوژیکی است که به منظور همانند سازی و پیش بینی جریان روزانه در حوزه های کوهستانی متأثر از ذوب برف طراحی شده است. مبنای بکار گرفته شده در مدل srm روش تجربی درجه-روز می باشد که به رغم گستردگی کاربرد آن به دلیل دارا نبودن عامل های فیزیکی همواره مورد نکوهش پژوهش...

Journal: :IEEE Trans. Industrial Electronics 1998
Yasser G. Dessouky Barry W. Williams John E. Fletcher

This paper presents a method of enhancing the performance of a four-phase switched reluctance motor by using capacitors to produce additional supply voltage during the rise and fall periods of a motor phase current. The voltage rating of the inverter components increases and extra capacitor/diode combinations are needed. The operation and analysis of a series voltage boost circuit are detailed ...

In this paper the method of sensorless startup of direct current brushless motor using third harmonic back Electromotive Force (EMF) and motor startup using microcontroller for pulse width modulation, power switch control and motor output analysis is presented which renders RPM control and high speed achievement for motor. The microcontroller is used for processor and MOSFETs are used for power...

2001
Hao Chen Dong Zhang

The paper presents the principles of the decoupling control of the phase voltage in the Switched Reluctance motor drive for the direct-drive joint of the robot. The motor drive system elements, such as the structure of the three-phase 6/10 structure Switched Reluctance motor and the rotor position, the main circuit topology of the three-phase bifilar winding power converter and the pulse width ...

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