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In this paper we report the use of an extension of the Ott-Grebogi-Yorke (OGY) approach for controlling chaos, but instead of using a Poincaré Map we use the First Return Map (FRM) of the generated flow. This allows us to deal with systems whose chaotic attractors has a fractal dimension close to an integer value. The method uses only a measurement of one system variable. We take some available parameter...
The Laser Interferometer Gravitational Wave Observatory (LIGO) is a network of three detectors built to detect local perturbations in the space–time metric from astrophysical sources. These detectors, two in Hanford, WA and one in Livingston, LA, are power-recycled Fabry-Perot Michelson interferometers. In their fifth science run (S5), between November 2005 and October 2007, these detectors accumulated...
This paper describes the methodology and solution to automate and monitor a sewage treatment plant from an industry dedicated to the manufacture of wood panels. The control system designed, not only governs all elements of performance of the plant, but also oversees its proper functioning. It also has a human-machine interface with a daily working and emergency program, accompanied by an information...
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