Adressing static and dynamic errors in bandpass unit element multibit DAC's

This paper describes a general model for static as well as dynamic errors in multibit unit element DAC's. Apart from the static mismatch there are two other error terms arising from switching imperfections. Based on the model, some bandpass mismatch shaping techniques are presented. These address both the static mismatch as well as the switching imperfections. The techniques can significantly improve the in band noise

Web-based trainer for electrical circuit analysis

A Web-based system for training electric circuit analysis is presented in this paper. It is centered on symbolic analysis techniques and it not only verifies the student's final answer, but it also trucks and couches him/her through all steps of his/her reasoning path. The system mimics homework assignments, enhanced by immediate personalized feedback. Evaluation data based upon a first trial indicate that this tool is a useful complement to the traditional training approach

The small wind turbine field lab extensive field tests for small wind turbines

This paper describes the research possibilities at the Small Wind Turbine Field Lab and the involved research groups of Ghent University, covering different aspects of a small wind energy system. In contrast to large and medium-sized wind turbines, small wind turbines are still plagued by relatively high production and purchase costs, and low reliability and energy yield. Furthermore, most of them have not been subjected to a field test program. Power-Link, the energy knowledge platform of Ghent University, has for three years operated a modest field test site for small wind turbines, that drew the attention of a lot of manufacturers of small wind turbines. In response, Ghent University decided to launch the Small Wind Turbine Field Lab (SWT Field Lab), to subject small wind turbines to more extensive field tests. Now not only the energy yield is tested, but also topics such as grid integration, structural strength, noise propagation, generator and drive train design and tower construction are studied. All of these parameters are correlated with meteorological data measured on-site

Van restwarmte naar proceswarmte

In het kader van het Europese streven naar meer energie-efficiëntie wordt binnen de industrie recent ook aandacht besteed aan het nuttig inzetten (recupereren) van restwarmte

Spatio-temporal modeling of soil characteristics for soilscape reconstruction

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