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This paper presents the automation of the power distribution system of the Pici Campus of the Federal University of Ceará. The paper aims to present the integration via protocol Open Platform Communications (OPC) of an application program for automatic restoration and a commercial Supervisory Control and Data Acquisition (SCADA). OPC ensures different application programs with proprietary protocols...
Traditionally, due the high effort involved in the simulation of power systems electromechanical transients, this simulations is carried out the so-called phasor model approach. This approach considers de following main simplifications: equal distribution of loads among the phases, representation of elements by lumped and identical parameters in all phases, invariance of this elements with respect...
The international Electrotechnical Commission (IEC) 61499 architecture incorporated several function block with which distributed control application may be developed, and how these are interpreted and executed. However, due the distributed nature of the control applications, many issues also need to be taken into account. Most of these are due to the new error model and failure modes of the distributed...
Tests that validate the operation of handsets into carriers' networks are very important to ensure the quality of such devices. In this way, carriers require a rigid process of certification before the delivery of these handsets into the market. Note, however, that more thorough testing prior to deployment and a reduced time to market are competing objectives that handset manufacturers must try to...
Web services-based technologies have emerged as a technological alternative for computational web portals. Facilitating access to distributed resources through web interfaces while simultaneously ensuring security is one of the main goals in most of the currently existing manifold tools and frameworks. OpenCF, the open source computational framework that we have developed, shares these objectives...
This paper presents the implementation of a controller to an integrated manufacturing system, made through the application of the Supervisory Control Theory (SCT). The work explores the modeling of subsystems and the specifications of a real manufacturing system. A supervisor, which fulfills the specifications, is synthesized. Based on these SCT implementation aspects presented on the text, the synthesized...
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