نتایج جستجو برای: magnetic circuit approach

تعداد نتایج: 1700459  

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه مواد و انرژی - پژوهشکده انرژی 1389

در این پایان نامه نوع جدیدی از ژنراتورهای شار محوری مغناطیس دایم با توان 1kw برای استفاده در توربین های بادی طراحی و شبیه سازی شده است. مهمترین ویژگی این ساختار این است که آهنرباها به جای روتور در استاتور تعبیه شده اند. از مزایای این راه حل می توان به کاهش وزن روتور و تلفات مکانیکی،افزایش سرعت پاسخ، دسترسی بهتر به آهن رباها جهت تهویه و خنک کاری بهتر، حفاظت آهن رباها در برابر صدمات مکانیکی اشاره...

2014
Huilai Li Xiaomin Li Zhiyuan Li

Linear motors are strong candidates in electromagnetic launching technology for space-use. In this paper, two types linear motors, including parallel magnetic circuit linear permanent magnet brushless DC motor (PMC-LPMBDCM) and serial magnetic circuit linear permanent magnet brushless DC motor (SMC-LPMBDCM), have been presented for electromagnetic catapult. The rudimental configurations of thes...

2008
Sun Zhiyuan

Cable Tension Sensor Based on Magneto-elastic Effect Sun Zhiyuan Dept. of Instrument Development , Institute of Engineering Mechanics, Harbin. China Email:[email protected] ABSTRACT: This article introduces a sensor based on magneto-elastic effect in order to measure the axial tension of steel cable. We explained the basic principle of the sensor in detail, designed and analyzed the magneti...

2001
Takashi Iwasaki Makoto Takashima

This paper presents two methods for determining the complex antenna factor (CAF) of a shielded loop antenna for HF magnetic field measurements. A circuit model is introduced to apply the field-transferred 3-antenna method to double-loaded shielded loop antennas. In addition, a new 3-antenna method is proposed, where theoretical calculation and circuit measurement are combined. Experiments are m...

2016
Yueyin Qiu Wei Xiong Xiao-Ling He Tie-Fu Li J. Q. You

We develop a theory for the quantum circuit consisting of a superconducting loop interrupted by four Josephson junctions and pierced by a magnetic flux (either static or time-dependent). In addition to the similarity with the typical three-junction flux qubit in the double-well regime, we demonstrate the difference of the four-junction circuit from its three-junction analogue, including its adv...

2009
Isabelle chronosequence Aubin Christian Messier André Bouchard

Question: Are direct and indirect trait-based approaches similar in their usefulness to synthesize species responses to successional stages? Location: Northern hardwood forests, Québec, Canada (451010–451080N; 731580–741210W). Methods: Two different trait-based approaches were used to relate plant functional traits to succession on an oldfield – deciduous forest chronosequence: (i) a frequently...

2004
Donald S. Crankshaw Enrique Trias

AbstructOne-dimensional parallel arrays of Josephson junctions have the ability to perform as oscillators tunable hy magnetic flux. We have designed and tested an array impedance matched to a detector junction load. The amplitude and frequency of the array are controlled by the independent variables of magnetic field and current bias. We report on the array's characteristics and compare them to...

2009
D. Schmitt-Landsiedel C. Werner

MOS devices go 3D, new quantum effect devices appear in the research labs. This paper discusses the impact of various innovative device architectures on circuit design. Examples of circuits with FinFETs or Multi-Gate-FETs are shown and their performance is compared with classically scaled CMOS circuits both for digital and analog applications. As an example for novel quantum effect devices beyo...

2012
F. Moro R. Turri

In this work, approximate formulas are presented for computing the magnetic field intensity near electric power transmission lines. Original expressions are given for single circuit lines of any type of arrangement and double circuit lines in both super-bundle and low-reactance conductor phasing. These expressions can be used for assessing directly the Right-of-Way width of power lines related ...

2009
Juraj Brenkuš Viera Stopjaková Ronny Vanhooren Anton Chichkov

In this paper, an analysis comparing the efficiency of different test strategies on a moderate complexity mixedsignal circuit is presented. Selected test strategies from the groups of functional, structural and parametric approaches were applied for the circuit test while considering bridging faults introduced into the circuit layout. The faults were extracted from the layout of the circuit. Fa...

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