Дослідження метрологічних характеристик автоматизованого засобу вимірювального контролю вологості паперу
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Дата
2020
Автори
Корецька, Л.О.
Форкун, І.В.
Медзатий, Д.М.
Koretska, L.
Forkun, I.
Medzatyi, D.
Назва журналу
Номер ISSN
Назва тому
Видавець
Хмельницький національний університет
Анотація
У статті наведено дослідження основних метрологічних характеристик засобів вимірювального контролю вологості
паперу: теоретичну та експериментальну градуювальні характеристики, похибки засобу вимірювань вологості паперу
(абсолютну, відносну, зведену), встановлено клас точності вимірювального засобу. Наведено алгоритм виконання
комплектної повірки засобу.
The moisture content of the paper plays a very important role, as it affects the strength, stability of the size and shape of the sheets. Control over the preparation of printing machines for printing, which aims to ensure the correct position of the print on the paper, twisting, warping, static electricity, the formation of wrinkles and folds is impossible without control over the humidity of the paper and the dynamics of its change. The greatest stability of paper moisture is observed at a humidity of 45%. And the most favorable range of humidity - 40-60%. But when you move sheets of paper from storage areas where the temperature is lower, to the room where the printing will take place and the temperature is higher, and accordingly, a difference in humidity is created, which will affect the humidity of the paper. After weaving the polyethylene sheets of paper begin to absorb moisture until there is a balance of humidity in the environment. Changing the moisture content of the paper leads to printing defects, the use of more ink, incompatibility of inks on the prints, and others. Therefore, measuring the moisture content of the paper before printing is of great importance. The optimum moisture content in the paper is 4.5-5.5%. High-precision automated measuring instruments should be used to monitor such small values. High-precision determination of paper humidity in an automated humidity control system is important because the range of usability of paper that is suitable for use is quite small. Inaccurate measurement can lead to the paper being considered unusable by the system, and vice versa. The use of surplus methods of measuring the humidity content of sheet materials provides automatic correction of errors, which are due to the influence of the following factors: absolute values of the parameters of the conversion function of the measuring channel and their deviation from the nominal values; nonlinearity and instability of the parameters of the transformation function of the measuring channel as a result of the influence of external destabilizing factors; attenuation of the flow of optical radiation introduced by the elements of the optical path and contamination of the optical elements. The extraction of the error components is carried out as a result of processing the obtained intermediate data according to a certain equation of surplus measurements. The article studies the metrological characteristics of the automated paper humidity control system, which is based on the use of the method of surplus measurements. The accuracy class of the automated control system is determined.
The moisture content of the paper plays a very important role, as it affects the strength, stability of the size and shape of the sheets. Control over the preparation of printing machines for printing, which aims to ensure the correct position of the print on the paper, twisting, warping, static electricity, the formation of wrinkles and folds is impossible without control over the humidity of the paper and the dynamics of its change. The greatest stability of paper moisture is observed at a humidity of 45%. And the most favorable range of humidity - 40-60%. But when you move sheets of paper from storage areas where the temperature is lower, to the room where the printing will take place and the temperature is higher, and accordingly, a difference in humidity is created, which will affect the humidity of the paper. After weaving the polyethylene sheets of paper begin to absorb moisture until there is a balance of humidity in the environment. Changing the moisture content of the paper leads to printing defects, the use of more ink, incompatibility of inks on the prints, and others. Therefore, measuring the moisture content of the paper before printing is of great importance. The optimum moisture content in the paper is 4.5-5.5%. High-precision automated measuring instruments should be used to monitor such small values. High-precision determination of paper humidity in an automated humidity control system is important because the range of usability of paper that is suitable for use is quite small. Inaccurate measurement can lead to the paper being considered unusable by the system, and vice versa. The use of surplus methods of measuring the humidity content of sheet materials provides automatic correction of errors, which are due to the influence of the following factors: absolute values of the parameters of the conversion function of the measuring channel and their deviation from the nominal values; nonlinearity and instability of the parameters of the transformation function of the measuring channel as a result of the influence of external destabilizing factors; attenuation of the flow of optical radiation introduced by the elements of the optical path and contamination of the optical elements. The extraction of the error components is carried out as a result of processing the obtained intermediate data according to a certain equation of surplus measurements. The article studies the metrological characteristics of the automated paper humidity control system, which is based on the use of the method of surplus measurements. The accuracy class of the automated control system is determined.
Опис
Ключові слова
автоматизована система контролю вологості, метрологічні характеристики, надлишковий метод, вологість паперу, automated humidity control system, metrological characteristics, surplus method, paper humidity
Бібліографічний опис
Корецька Л. О. Дослідження метрологічних характеристик автоматизованого засобу вимірювального контролю вологості паперу / Л. О. Корецька, І. В. Форкун, Д. М. Медзатий // Вимірювальна та обчислювальна техніка в технологічних процесах. – 2020. – № 1. – С. 41-45.