نتایج جستجو برای: ac machine

تعداد نتایج: 297107  

1988
Hideto Tomabechi Masaru Tomita

&bstract 't'h~s pa~r describes file use of the Direct Memory Ac~ ~:css (DIdA) pmadig~n hi a practical ltatu~tl lmlguage in~:c~f~tec, Advaaltages and disadvantages of DMA in such ~pplications art~ discussed. 'ihe DMA natural language inteffa~x~ 'I)M-.COMMAND ~ described in this paper is be.. tug u.~;c ¢l tk~r development of a knowledge-based machine translation system at rite Center for Machine ...

Journal: :journal of dental research, dental clinics, dental prospects 0
sogra yassaei reza fekrazad neda shahraki mahdjoube goldani moghadam

background and aims. the aim of this study was to compare shear bond strength (sbs) of metal and ceramic brackets bonded to enamel using acid versus er:yag laser etching. materials and methods. eighty premolars were divided into 4 groups: am (acid etching/ metal brackets), ac (acid etching/ ceramic brackets), lm (laser etching/ metal brackets) and lc (laser etching/ ceramic brackets). enamel co...

2008
GUO Yougui ZHU Jianlin

People usually research modulation mode 3 of SVM for matrix converter discussed in this paper. Actually, other different modulation modes of SVM for matrix converter are worth studying. Two novel modulation modes are put forward for matrix converter for the first time in this paper, expanding its modulation modes of SVM. First, SVM for matrix converter is described. Then the 3 modulation modes ...

2013
Saranya

The matrix converter system is competitive solution to replace the conventional two stage ac to ac converter. In this paper, a matrix converter driving a speed-controlled induction machine is examined under open-switch fault. First, a-predictive direct torque method is proposed using only the motor torque and current. Second, a motor speed control is presented. The proposed techniques do not re...

Journal: :Mathematics and Computers in Simulation 2013
Jean-François Brudny Cristian Demian Lucian Petrea Thierry Belgrand

The main topic of this paper is to examine the impact on induction machine magnetic noise of a new stator magnetic circuit design. This new design was developed in order to increase AC machine energetic performance by assembling non-segmented shifted grainoriented steel sheets which make it possible to reduce iron losses. Experimental results on induction machine efficiency increase are present...

Journal: :CoRR 2017
Katharina Eggensperger Marius Thomas Lindauer Holger H. Hoos Frank Hutter Kevin Leyton-Brown

The optimization of algorithm (hyper-)parameters is crucial for achieving peak performance across a wide range of domains, ranging from deep neural networks to solvers for hard combinatorial problems. The resulting algorithm configuration (AC) problem has attracted much attention from the machine learning community. However, the proper evaluation of new AC procedures is hindered by two key hurd...

ژورنال: :نشریه دانشکده فنی 2006
محمد توکلی بینا حسن محمدی پیروز

مبدلهای ac/ac چند سطحی بر مبنای مدولهای تمام پل کاربردهای فراوانی در قدرتها و ولتاژهای بالا داشته و بعنوان نسل سوم کنترولرهای facts نیز مورد توجه قرار گرفته و تحقیقات دامنه داری دراین زمینه در جریان است. درهمین راستا، این مقاله روشی جدید برای مدولاسیون و کنترل اینگونه مبدلها ارایه می نماید بطوریکه کنترل مستقل ولتاژ خروجی بهمراه کنترل توان راکتیو در ورودی وخروجی امکان پذیر است. بعلاوه، این سیستم...

2016
Simon Heinen

Ab ac : Ind 4. deno e he eme gence of ma fac o ie i h a ong foc on comm nica ion be een h man , machine and p od c , hich i ppo ed b c be -ph ical em [HPO15]. Among ch em a e a gmen ed eali applica ion , hich ha e g ea al e fo he a embl , moni o ing and main enance of machine . Ye , o da e he e a e no con enien mean fo ende o c ea e a gmen ed eali con en in a imple manne .We in od ce holob ilde...

2001
P. Beloshitsky C. Carli S. Maury D. Möhl F. Pedersen

The former Antiproton Collector (AC) at CERN has been transformed into an Antiproton Decelerator (AD) to supply high quality antiproton beams with a momentum of 100 MeV/c (kinetic energy of 5.3 MeV) [1]. As in AC, antiprotons are injected at 3.57 GeV/c and cooled by stochastic cooling system. To facilitate the deceleration and to prepare a small emittance beam for the experiments, stochastic co...

2003
NORIYUKI AKASAKA

In coping with the trend toward the much higher powered electric-motor driven injection molding machine, multi-AC servomotors control system has become necessary in order to control the molding machine mechanism. Thus, it is inevitable to use a synchronous positioning control technique not to cause the excessive mechanical stress in the machine body. It is possible to realize the synchronous po...

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