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Оценка температуры массивного тела по измеряемым величинам процесса теплообмена

Authors: Panferov, V.I.; Trenin, N.A.; Panferov, S.V.;

Оценка температуры массивного тела по измеряемым величинам процесса теплообмена

Abstract

Панферов Владимир Иванович, д-р техн. наук, профессор, Военный учебно-научный центр Военно-воздушных сил «Военно-воздушная академия им. проф. Н.Е. Жуковского и Ю.А. Гагарина», филиал в г. Челябинске, г. Челябинск; tgsiv@mail.ru. Тренин Николай Александрович, канд. воен. наук, начальник кафедры, Военный учебно- научный центр Военно-воздушных сил «Военно-воздушная академия им. проф. Н.Е. Жуковского и Ю.А. Гагарина», филиал в г. Челябинске, г. Челябинск. Панферов Сергей Владимирович, канд. техн. наук, доцент, Военный учебно-научный центр Военно-воздушных сил «Военно-воздушная академия им. проф. Н.Е. Жуковского и Ю.А. Гагарина», филиал в г. Челябинске, г. Челябинск. V.I. Panferov, tgsiv@mail.ru, N.A. Trenin, S.V. Panferov Russian Air Force Military Educational and Scientific Center “Air Force Academy named after Professor N.E. Zhukovsky and Y.A. Gagarin”, Chelyabinsk branch, Chelyabinsk, Russian Federation Рассматривается решение задачи оценки температурного поля заготовки по измеряемым (наблюдаемым) величинам процесса нагрева – температурам поверхностей и температурам сред, омывающих эти поверхности. Необходимым условием разрешимости этой задачи является наличие настроенной на «реальный процесс» модели нестационарного теплообмена. Приводятся конкретные алгоритмы решения задачи, также определено влияние погрешностей измерения температуры на точность оценки. Таким образом, показано, что температурное поле заготовки может быть достаточно точно определено по результатам текущих измерений совершенно независимо от предыстории процесса нагрева. Следовательно, непрерывный контроль температуры по ходу процесса нагрева с самого его начала не является в принципе абсолютно необходимым для того, чтобы иметь возможность определять температурное поле сляба в какие-то ответственные моменты времени. Результаты работы могут быть использованы при построении автоматизированных систем управления методическими нагревательными печами прокатного производства. The solution of the problem of estimating the temperature field of the billet from the measured (observed) values of the heating process to the surface temperatures and the temperatures of the media washing these surfaces is considered. A necessary condition for the solvability of this problem is the presence of a non-stationary heat exchange model tuned to the "real process". Specific algorithms for solving the problem are given, and the influence of temperature measurement errors on the accuracy of the estimate is determined. Thus, it is shown that the temperature field of the billet can be determined quite accurately from the results of the current measurements completely independently of the prehistory of the heating process. Consequently, continuous monitoring of the temperature during the heating process from its very beginning is not in principle absolutely necessary in order to be able to determine the temperature field of the slab at some crucial time. The results of the work can be used in the construction of automated control systems for methodical heating furnaces of rolling production.

Country
Russian Federation
Keywords

evaluation algorithm, heating furnaces, нагревательные печи, температурное поле заготовки, измеряемые величины, automated control systems, автоматизированные системы управления, process observability, УДК 536.68, алгоритм оценки, наблюдаемость процесса, billet temperature field, measured values

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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Green