CONTROL OF THERMAL STATE OF ELECTRIC CONTACT

Problems connected with definition of temperature of the contact surface of electric contact using the methods of mathematical modelling by solution of direct problem of heat conductivity are considered. Initial mixed value problem of heat conductivity by the method of thermally thin layer was transformed to Koshi problem for ordinary differential equation of the first order, having enough simple analytical solution. Values of two correction coefficients were found by selection and using least squares method. It made possible to reduce an absolute error of temperature detecting of the surface contact till four degrees. The obtained formula was the basis of the construction of intellectual sensor of temperature of inaccessible surface.