Using genetic algorithms for compensating the local magnetic perturbation of a ship in the earth's magnetic field
Grupo de investigación
Grupo Electromagnetismo Aplicado a las TelecomunicacionesÁrea de conocimiento
Teoría de la Señal y las ComunicacionesRealizado en/con
Universidad Politecnica de CartagenaFecha de publicación
2005-11Editorial
John WileyCita bibliográfica
Microwave and Optical Technology Letters. Vol. 47, No. 3, November 2005, pp. 281--287Revisión por pares
SIPalabras clave
Genetic algorithmsMagnetic compensation
Degaussing coils
Optimization methods
Resumen
This paper shows a practical application of genetic algo-
rithms (GAs) for compensating the local magnetic perturbation
produced by a ship, while moving in the earth's magnetic field. The
compensation is achieved by modifying the number of turns and the current
magnitude across the so-called degaussing coils distributed along the
ship. A GA scheme for automatic optimisation of these parameters is
used. A new objective-function strategy, called a boundary method, is
proposed. It is shown that the convergence of the GA is greatly
improved when the new objective function is used. Different selection
mechanisms, objective function strategies, and scaled methods are
revised in this paper. The results show that GAs can be efficiently used to
reduce drastically the magnetic field levels of real practical ships.
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