Title:
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A genetic algorithm optimized fractal model to predict the constriction resistance from surface roughness measurements
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Author:
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Capelli, Francesca; Riba Ruiz, Jordi-Roger; Rupérez de Gracia, Elisa; Sanllehí, Josep
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica; Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica; Universitat Politècnica de Catalunya. MCIA - Motion Control and Industrial Applications Research Group; Universitat Politècnica de Catalunya. BBT - Biomaterials, Biomecànica i Enginyeria de Teixits |
Abstract:
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The electrical contact resistance greatly influences the thermal behavior of substation connectors and other electrical equipment. During the design stage of such electrical devices, it is essential to accurately predict the contact resistance to achieve an optimal thermal behavior, thus ensuring contact stability and extended service life. This paper develops a genetic algorithm (GA) approach to determine the optimal values of the parameters of a fractal model of rough surfaces to accurately predict the measured value of the surface roughness. This GA-optimized fractal model provides an accurate prediction of the contact resistance when the electrical and mechanical properties of the contacting materials, surface roughness, contact pressure, and apparent area of contact are known. Experimental results corroborate the usefulness and accuracy of the proposed approach. Although the proposed model has been validated for substation connectors, it can also be applied in the design stage of many other electrical equipments. |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria elèctrica::Maquinària i aparells elèctrics::Control elèctric -Àrees temàtiques de la UPC::Matemàtiques i estadística::Lògica matemàtica -Electric connectors -Genetic algorithms -Materials--Testing -Fractals -Connectors -contact resistance -fractals -genetic algorithms (GAs) -rough surfaces -Connectors elèctrics -Algorismes genètics -Resistència de materials -Fractals |
Rights:
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Document type:
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Article - Submitted version Article |
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