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License: CC BY
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https://doi.org/10.15587/2312-...
Article . 2017 . Peer-reviewed
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Identification of the parameters of the cable production process

Authors: Ostroverkhov, Mykola; Silvestrov, Anton; Kryvoboka, Galyna;

Identification of the parameters of the cable production process

Abstract

The object of research is the process of producing electric cables with polymer insulation for ultrahigh voltages. One of the most problematic places is the presence in the contours of the regulation of the thickness of insulation layers, the noise of measuring the speeds of worms of extruders and the diameters of the insulation layers, and also the time delay. The noisiness of useful signals and the time delay adversely affect the accuracy of layer thickness control and the speed of regulation and can lead to loss of system stability. To solve this problem, a parametric identification method is proposed, which under real conditions of noisy measurements of control object variables gives an estimate close to the exact values of the parameters.A modified least squares method is used, which in the situation of noisy input and output signals provides an unbiased estimate parameters, and a smaller spread rating than conventional least squares method. This is due to the fact that the proposed method makes it possible to reduce the spread of the quadratic functional by additional averaging on the set of quasi-static independent functionals.In comparison with the analogous well-known least squares method, it provides an increase in the accuracy of identifying parameters in conditions of noiselessness of not only output but also input signals. The introduction of research results in systems of adaptive control of the thickness of polymer insulation layers in the production of cables for ultra-high voltage will improve product quality and improve production efficiency.

Благодаря возможностям современных информационных систем показаны пути совершенствования систем параметрической идентификации, а именно, получение более точных оценок параметров математической модели исследуемого объекта с ограниченных во времени и диапазоне, зашумленных выборок данных. Рассмотренный метод идентификации предложено использовать в адаптивных системах управления процессом изготовления высоковольтных электрических кабелей.

Завдяки можливостям сучасних інформаційних систем показано шляхи удосконалення систем параметричної ідентифікації, а саме, отримання більш точних оцінок параметрів математичної моделі досліджуваного об’єкта з обмежених у часі і діапазоні, зашумленних вибірок даних. Розглянутий метод ідентифікації запропоновано використовувати в адаптивних системах керування процесом виготовлення високовольтних електричних кабелів.

Keywords

parametric identification; integrated identification method; electrical engineering systems; electrical cables, параметрическая идентификация; интегрированный метод идентификации; электротехнические системы; электрические кабели, параметрична ідентифікація; інтегрований метод ідентифікації; електротехнічні системи; електричні кабелі, UDC 681.5.015 (045)

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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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