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Proceedings of the Technical university of Sofia, 1995 -
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Последно депозирани

Proceedings of the Technical university of Sofia, 1995 -: Последно депозирани

Показване на публикации 201-220 от 853

Заглавие: FPAA prototyping of signal conditioning circuit for inductive displacement transducer Автор: Koparanov, Filip Todorov; Копаранов, Филип Тодоров; Tzanov, Mihail Hristov; Цанов, Михаил Христов; Manolov, Emil Dimitrov; Манолов, Емил Димитров Дата: 2008 Резюме: The paper presents the results from the design and investigation of FPAA based signal conditioning circuit for Inductive Displacement Transducer (IDT). The design utilizes Simulink behavioral model of the signal conditioning circuit based on dual half-wave rectifiers. The synthesized FPAA prototype is simulated and practically examined ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Simulink modeling of signal conditioning circuit for inductive displacement transducer Автор: Tzanov, Mihail Hristov; Цанов, Михаил Христов; Koparanov, Filip Todorov; Копаранов, Филип Тодоров; Manolov, Emil Dimitrov; Манолов, Емил Димитров Дата: 2008 Резюме: This paper presents the developing and examining a Simulink model of signal conditioning circuit for Inductive Displacement Transducer (IDT). To this aim the basic specifications of IDT WA200 sensor are studied and Simulink behavioral model is proposed. The two most popular methods for signal conditioning of IDT output signal are described ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Development of parameterized cell of spiral inductor using skill language Автор: Grozdanov, Vladimir; Грозданов, Владимир; Pukneva, Diana; Пъкнева, Диана; Hristov, Marin; Христов, Марин Дата: 2008 Резюме: In this paper is presented a method to facilitate the process of design RF circuits and systems using standard industrial CAD system CADENCE. Parameterized cell of square spiral inductor is proposed. It is created using built in Cadence language – SKILL. The use of a standard cell where the geometry parameters of the inductor can be set and ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Design and investigation of an accelerometer Автор: Hristov, Marin; Христов, Марин; Veleva, Plamena; Велева, Пламена; Denishev, Krasimir; Денишев, Красимир; Grozdanov, Vladimir; Грозданов, Владимир; Gaydazhiev, Dobromir; Гайдажиев, Добромир Дата: 2008 Резюме: The past few years have witnessed an increasing maturity of the MEMS industry and a rapid introduction of new products addressing applications, ranging from biochemical analysis to fiber-optic telecommunications. The market size for MEMS products has doubled in the past 5 years and is projected to grow at this fast rate for the foreseeable ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Design and simulation of accelerometer springs Автор: Hristov, Marin; Христов, Марин; Toshev, Kiril; Тошев, Кирил; Denishev, Krasimir; Денишев, Красимир; Grozdanov, Vladimir; Грозданов, Владимир; Gaydazhiev, Dobromir; Гайдажиев, Добромир Дата: 2008 Резюме: With the development of MicroElectroMechanicalSystems (MEMS), inertial instruments have seen significant progress over the past decades. The advantages of low-cost, low-power, small size, batch fabrication, makes MEMS-based inertial sensors have a wide range of applications in automotive, consumer, computer, and navigation markets. An ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Design and investigation of a thermal actuator Автор: Hristov, Marin; Христов, Марин; Takov, Tihomir; Таков, Тихомир; Cholakova, Ivelina; Чолакова, Ивелина; Denishev, Krassimir; Денишев, Красимир; Grozdanov, Vladimir; Грозданов, Владимир; Gaydazhiev, Dobromir; Гайдажиев, Добромир Дата: 2008 Резюме: Recently, there is tremendous interest in Micro Electro Mechanical Systems (MEMS) technology. MEMS refer to a collection of microsensors and actuators that can sense environment and have the ability to react to changes, with the use of a microcircuit control. Microelectromechanics have accomplished phenomenal growth over the past few years, ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Thermographic inspection of relays for railway safety equipment Автор: Andonova, Anna Vladova; Андонова, Анна Владова; Ivanov, Emil; Иванов, Емил; Andreev, Andrew; Андреев, Андрей Дата: 2008 Резюме: The following article presents results of the implementation of thermomonitoring methods followed up by processing of IR images. Field purpose is diagnostics of contacts wearing-out in the relays for railway safety equipment. Acceleration testing has been performed for contacts wearing-out in the relays under alternating current (AC). In ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Tool for synchronous communications in collaborative environment Автор: Furnadziev, Ivan Haralampiev; Фурнаджиев, Иван Харалампиев; Tchoumatchenko, Vassiliy Platonovitch; Vasileva, Tania Krumova; Василева, Таня Крумова Дата: 2008 Резюме: The paper outlines the design and implementation of end-user applications for networking and community building in shared collaborative environment. It covers features, architecture and user interface of the Chat tool, dedicated for synchronous communications in Shared Space. Chat tools aim to facilitate contextualized user communications ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Contactless thermal characterization method of switching mode power supply Автор: Andonova, Anna Vladova; Андонова, Анна Владова; Tural, Ekrem; Andreev, Andrew Stefanov; Андреев, Андрей Стефанов Дата: 2008 Резюме: This article presents results from the creation of switching mode power supply and non-contact thermal characterization of the separate elements that presents the risk of its reliability. Thermgraphics for several loads of different components are taken by infrared (IR) camera FLIR Р640. The developed non-contact method is realized on the ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Validation of anonymous surveys of educational subjects through their basic results Автор: Videkov, Valentin Hristov; Видеков, Валентин Христов; Radonov, Rossen Ivanov; Радонов, Росен Иванов; Tsolov, Russy; Цолов, Руси Дата: 2008 Резюме: The paper presents the development of an anonymous survey system using the Internet for the purposes of the System for Assessment and Maintenance of the Quality of Education (known as SOPKO) at the Technical University of Sofia. Some of the results processing functions and means for guaranteeing the process’ authenticity are described. Some ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Practical training in automotive electronics Автор: Vasileva, Tania Krumova; Василева, Таня Крумова; Draganov, Vutko Aleksandrov; Драганов, Вътко Александров; Tzanov, Mihail Hristov; Цанов, Михаил Христов; Koparanov, Filip Todorov; Копаранов, Филип Тодоров; Tchoumatchenko, Vassiliy Platonovitch Дата: 2008 Резюме: The increase in complexity of modern cars also increases the demands placed on diagnostics, maintenance and repair. The paper outlines the design and implementation of blended learning course for training in Automotive electronics and OBD diagnostic. Developed practical exercises with emphasis on engine performance test and OBDII diagnostic ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Methodology for teaching basic skills in PLC programming development Автор: Iovev, Atanas Nikolov; Йовев, Атанас Николов; Yakimov, Peter Ivanov; Якимов, Петър Иванов; Tuliev, Nikolay Todorov; Тюлиев, Николай Тодоров; Ovcharov, Stefan Jordanov; Овчаров, Стефан Йорданов; Balkanska, Emiliya; Балканска, Емилия; Stoyanov, Eftim; Стоянов, Ефтим Дата: 2008 Резюме: The teaching and training of the students in the field of Programmable Logic Controllers (PLC) is very important, because it determines the safety and the quality of control. This paper describes the various parts of the PLC and demonstrates some software for performing tasks using some of the next typical instructions: Bit Logic Instructions, ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Investigation and development of electronic instruments for plc programming training Автор: Yakimov, Peter Ivanov; Якимов, Петър Иванов; Tuliev, Nikolay Todorov; Тюлиев, Николай Тодоров; Iovev, Atanas Nikolov; Йовев, Атанас Николов; Ovcharov, Stefan Jordanov; Овчаров, Стефан Йорданов; Balkanska, Emiliya; Балканска, Емилия; Mihov, Georgy Slavtchev; Михов, Георги Славчев Дата: 2008 Резюме: Programmable logic controllers have been gaining popularity on the factory floor and nowadays are the most common choice for manufacturing controls. Because of the nature of a specific industrial object or manufacturing process it is impossible by reason of security the program adjustment to be performed in real conditions. Thus simulators ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: An electronic system for digitally program mable analog circuits study Автор: Pandiev, Ivailo Milanov; Пандиев, Ивайло Миланов; Yakimov, Peter Ivanov; Якимов, Петър Иванов; Doychev, Doycho Dimitrov; Дойчев, Дойчо Димитров; Todorov, Todor; Тодоров, Тодор; Stanchev, Veselin; Станчев, Веселин Дата: 2008 Резюме: In this paper we present a specific electronic system for analysis and design of digitally programmable analog circuits. The created electronic system is with module structure and envelops specific circuits such as programmable gain amplifiers(PGAs), attenuators, analog circuits with CMOS digital potentiometers, active filters, direct digital ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: A practical approach to design and modeling digitally programmable analog circuits Автор: Pandiev, Ivailo Milanov; Пандиев, Ивайло Миланов; Yakimov, Peter Ivanov; Якимов, Петър Иванов; Dimitrov, Doycho Dimitrov; Димитров, Дойчо Димитров; Todorov, Todor; Тодоров, Тодор; Stanchev, Veselin; Станчев, Веселин Дата: 2008 Резюме: In this paper, practical approaches to design and macromodeling digitally programmable analog circuits are described. The proposed design approaches are based on the design methods for analog circuits, the procedures for performing simulation projects and the general methodology for building Web-based client/server applications. Those methods ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Electronic portfolio built into windows sharepoint collaboration and learning environment Автор: Shoikova, Elena Dikova; Шойкова, Елена Дикова Дата: 2008 Резюме: This paper reports work-in-progress for a project to create an electronic portfolio for the Technical University-Sofia students. It outlines the components of the project being undertaken and the processes that students will experience. The paper presents the process of electronic portfolio development through five stages and its implementation ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Researching electronic portolios: educational and professional development through technology Автор: Shoikova, Elena Dikova; Шойкова, Елена Дикова Дата: 2008 Резюме: The use of ePortfolios in distributed learning in higher education and corporate training worldwide has increased over the last years. An ePortfolio is a highly personalized, customizable, web-based information management system, which allows students to demonstrate individual and collaborative growth, achievement, and learning over time. ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Spice simulation of the control system for frequency regulated transistor resonant inverter Автор: Kunov, Georgi; Кънов, Георги Цв.; Gadjeva, Elissaveta Dimitrova; Гаджева, Елисавета Димитрова; Dimov, Todor; Димов, Тодор; Philipov, Borislav; Филипов, Борислав Дата: 2008 Резюме: The paper subject of research is synthesis and SPICE simulation of a system for frequency control and regulation of series resonant transistor inverter. A characteristic feature of the system is the tracking of an only one synchronization signal. That is the current in the resonance loop. This approach is extremely preferable when the heat ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: Application of postprocessing for objective function formulation in the statistical optimization using PSPICE Автор: Gadjeva, Elissaveta Dimitrova; Гаджева, Елисавета Димитрова; Shikalanov, Dimitar; Шикаланов, Димитър Дата: 2008 Резюме: An approach is proposed in the paper to automated statistical circuit optimization using the general-purpose circuit analysis program Cadence PSpice. The selection of the optimal variant is based on postprocessing in the graphical amalyzer Probe. The objective functions are formulated and calculated using corresponding macrodefinitions.They ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA
Заглавие: An approach to passive circuit synthesis using genetic algorithms in MATLAB – band-pass filter Автор: Durev, Vladislav Petrov; Дурев, Владислав Петров Дата: 2008 Резюме: An approach to passive circuit synthesis in MATLAB is proposed in the present paper. The Modified Nodal Analysis is used for the construction of the admittance circuit matrix. A circuit of passive band-pass filter is used for the demonstration of the method. The algorithm is easy to implement in MATLAB environment. A methodology for the ... Библиотека:
TECHNICAL UNIVERSITY - SOFIA

Показване на публикации 201-220 от 853

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