نتایج جستجو برای: electronic switching system

تعداد نتایج: 2448736  

2012
M. Kamaraju

Now a days, the usage of electronic appliances is increasing. In the offices, employees left their rooms without switching off the electrical appliances. So the power wastage increases. This power wastage can be reduced by making an intelligent system, which can control the electrical appliances automatically based on the requirement. The whole system is implemented and tested on FPGA.

Journal: :journal of computer and robotics 0
ahmad fakharian department of electrical and computer engineering, islamic azad university, qazvin branch, qazvin, iran department of computer science and electrical engineering, control engineering group, luleå university of technology, luleå, sweden

this paper undertakes the synthesis of a logic-based switching h2/h∞ state-feedback controller for continuous-time lti singular perturbation systems. our solution achieves a minimum bound on the h2 performance level, while also satisfying the h∞ performance requirements. the proposed hybrid control scheme is based on a fuzzy supervisor managing the combination of two controllers. a convex lmi-b...

Journal: :مدیریت فناوری اطلاعات 0
هاشم آقازاده استادیار مدیریت بازرگانی، دانشکدۀ مدیریت دانشگاه تهران، تهران، ایران ایمان احمدی کارشناس‎ارشد مدیریت بازرگانی، دانشکدۀ مدیریت دانشگاه تهران، تهران، ایران محمدمهدی دبیران استادیار مدیریت اجرایی، دانشکدۀ مدیریت دانشگاه تهران، تهران، ایران

considering the importance of the factors affecting customer satisfaction and loyalty, this study aimed to investigate the relationship between performance and characteristic of a online stores – digi-kala in this particular case, as a perfect example of an electronic customer relationship system, and customer's electronic loyalty and satisfaction. as a practical-descriptive, research, ele...

2010
Chien-Ming Chen Chi-Fu Yen Jen-Ai Lee

Two high-performance liquid chromatograph (HPLC) systems with a Rheodyne Model 7000 switching valve for separation of Dand L-lactate in biological samples has been reported. However, since the switching valve was rotated manually, so that only 10 samples could be determined within one day. For better efficiency, a circuit for rotating the switching valve automatically, which is including mechan...

A major problem in an isolated DC/DC converters operating at high switching frequencies is the attendant switching losses in the semiconductor devices. This can be reduced by introducing either zero-voltage switching (ZVS) or zero-current switching (ZCS) of the semiconductor switches. This paper deals with the simulation, design, fabrication and experimental evaluation of a novel soft-switching...

2002
A. M. Silva Filho M. K. I. Doi A. M. P. Lima

Today software systems are playing a critical role in the operation of telecommunication networks. The steadly growing size and complexity of these systems are making them extremely difficulty to exaustively test the software to ensure that it will adequately perform its specified function. With the increasing reliance on software systems for implementation of telecom service functionality, the...

 Insufficient electrical endurance of equipment and insulation failure against overvoltage is one of the most effective reasons for failure the power line. Lightening, switching or other disruptive parameters can cause line outage or distribution substation failure. There are different devices used to improve the safety, reliability, and power quality of the system. Surge arresters are one of t...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده علوم نانو 1392

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

2001
Eytan Modiano Randall Berry

We consider the role of switching in minimizing the number of electronic ports (e.g., SONET ADMs) in an optical network that carries sub-wavelength traffic. Providing nodes with the ability to switch traffic between wavelengths, such as through the use of SONET cross-connects, can reduce the required number of electronic ports. We show that only small switches at multiple switching nodes are ne...

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