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Computer-Aided Multi-Layer Design of Switch-Mode Power Circuits

Wojciechowski J., Modzelewski J., Ogrodzki J., Opalski L., Zamłyński K.

International Journal of Electronics and Telecommunications

2010

Vol. 56, No. 3

307-318

Switch-mode circuits are used as power processors, e.g. DC/DC converters, synchronous rectifiers, high-frequency resonant power amplifiers. Their efficient computer-aided design is a technical problem only partly resolved so far. This paper presents a multi-layer CAD methodology for switch-mode power circuits. It discusses several levels of modeling of switching devices. First rough design verification is feasible using ideal switch models. It gives a satisfactory first-cut design. Then full models and general-purpose tools provide more exact verification of the design. At this exact step the design procedure makes use of interactive improvement followed by automatic optimization of some quality based objective functions. The proposed methodology is shown to be especially useful for high power class-D voltage-switching resonant amplifiers, where the so far used experimental optimization is extremely cost consuming.

Interaktywne projektowanie z zastosowaniem narzędzi VRML

Weiss Z., Konieczny R., Kasica M., Kowalski M.

Mechanik

2004

R. 77, nr 11

775-779

Ergonomic Aspects of a Virtual Environment

Ahasan M. R., Vayrynen S.

International Journal of Occupational Safety and Ergonomics

1999

Vol. 5, No. 1

125--134

A virtual environment is an interactive graphic system mediated through computer technology that allows a certain level of reality or a sense of presence to access virtual information. To create reality in a virtual environment, ergonomics issues are explored in this paper, aiming to develop the design of presentation formats with related information, that is possible to attain and to maintain user-friendly application.