Алгоритм работы контроллера управления электромагнитным процессом в длинной линии

The paper discusses the issue of controlling the process of power allocation in a given secondary body cross section from currents induced by an inductor.This control can be applied in a number of flaw detection technologies, heating massive objects using induction currents.The inductor contains controlled voltage sources.The process control system must provide the ability to identify impact object (secondary body) parameters in order to fix and evaluate the effectiveness of the energy impact result.For mathematical description of electromagnetic processes in the inductor, the authors use an object representation by a long line with distributed parameters.The selected mathematical apparatus provides replacement of a variable in order to zero the boundary conditions.The voltage modulus is distributed along the line depending on time using the voltage expansion, introduction of new variables into a Fourier series with an integer number of half-waves of an odd sinusoidal function.The authors determine the balance by the amplitudes of discrete and continuous expansion in a row on a working frequency interval selected by the developer.They take into account the ratio of the voltage source frequency -the voltage wavelength along the line.The algorithm implements accuracy control in the representation of voltage distribution along a long line when solving a problem with the possibility of using it as a microcontroller control device.The increase in the number of series elements leads to complication of controller software that controls sources.If the line length and the required accuracy is known, it is possible to control the number of the expansion series optimally by varying source frequency.The authors used the Maple mathematical package to solve the problem and test the algorithm.The result is illustrated by a numerical example of a voltage distribution search with a specified voltage mismatch at line ends in phase, frequency and amplitude separately.The provided software is an integral part of the process control controller software.

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