Now showing items 1-10 of 79
A linearly tunable low-voltage CMOS transconductor with improved common-mode stability and its application to (gm)-C filters
(IEEE Transactions on Circuits and Systems Ii-analog and Digital Signal Processing, 2001-07-01) [Artigo]
A linearly tunable low-voltage CMOS transconductor featuring a new adaptative-bias mechanism that considerably improves the stability of the processed-signal common,mode voltage over the tuning range, critical for very-low ...
A multimedia environment for supporting the teaching of robotics systems
(24th International Conference on Distributed Computing Systems Workshops, Proceedings, 2004-01-01) [Trabalho apresentado em evento]
This paper aims at describing an educational system for teaching and learning robotic systems. Multimedia resources were used to construct a virtual laboratory where users are able to use functionalities of a virtual robotic ...
Chronological Monte Carlo-based assessment of distribution system reliability
(2006 9th International Conference on Probabilistic Methods Applied to Power Systems, PMAPS, 2006-12-01) [Trabalho apresentado em evento]
Regulatory authorities in many countries, in order to maintain an acceptable balance between appropriate customer service qualities and costs, are introducing a performance-based regulation. These regulations impose ...
Video target tracking by using competitive neural networks
(WSEAS Transactions on Signal Processing, 2008-12-01) [Artigo]
A target tracking algorithm able to identify the position and to pursuit moving targets in video digital sequences is proposed in this paper. The proposed approach aims to track moving targets inside the vision field of a ...
Teaching robotics systems in a multimedia environment
(Proceedings of the Iasted International Conference on Web-based Education, 2004-01-01) [Trabalho apresentado em evento]
This paper describes the development of a multimedia educational system to teach and learn robotic systems. Multimedia resources have been used to build a virtual laboratory where users are able to utilize functions of a ...
The electronic detail of a digital pH-meter
(18th IMEKO World Congress 2006: Metrology for a Sustainable Development, 2006-12-01) [Trabalho apresentado em evento]
This paperwork presents the complete circuitry used to build a microcontroller-based pH-meter. Key control software is also discussed. An industry-standard glass combination electrode has been employed for pH detection. ...
A new high voltage polymer insulator for electrical distribution system from oil of Mamoma trees.
(IEEE 1995 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, 1995-01-01) [Trabalho apresentado em evento]
A tunable triode-MOSFET transconductor and its application to g(m)-C filters
(Iscas '99: Proceedings of the 1999 IEEE International Symposium on Circuits and Systems, Vol 2, 1999-01-01) [Trabalho apresentado em evento]
A linear, tunable CMOS transconductance stage is introduced. Drain voltage of the input transistor operating in triode region is settled by a regulation loop and a first-order linear relationship between g(m) and a de bias ...
Reliability evaluation of distribution systems considering automatic reclosers
(2004 International Conference on Probabilistic Methods Applied to Power Systems, 2004-12-01) [Trabalho apresentado em evento]
This paper presents a new methodology to evaluate in a predictive way the reliability of distribution systems, considering the impact of automatic recloser switches. The developed algorithm is based on state enumeration ...
Synchronous machines parameters identification using load rejection test data
(IEEE International Electric Machines and Drives Conference Record, IEMDC, 1997-01-01) [Trabalho apresentado em evento]
This work shows a computational methodology for the determination of synchronous machines parameters using load rejection test data. The quadrature axis parameters are obtained with a rejection under an arbitrary reference, ...