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Identification of the eddy current method features in the implementation of computer simulation algorithms for controlling the characteristics of the food production equipment parts

Zashchepkina N. M., Zdorenko V. G., Sebko V., Markina O. M.

Journal of Achievements in Materials and Manufacturing Engineering

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2019

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Vol. 97, nr 1

31--40

EN

Purpose: The purpose of this article is to study the theoretical provisions of the operation of a vortex device in the implementation of a non-contact method of controlling the details of brewing equipment using computer simulation algorithms. Design/methodology/approach: The theoretical positions of thermal ECT operation with a copper product are obtained, which is controlled while maintaining a constant value of the magnetic field frequency f1 = 70.0 Hz, with small values of the generalized parameter x≤1.1 and increasing the parameter x due to the increase in the frequency of thermal ECT, that is, at x≥3.5. Findings: On the basis of computer simulation algorithms the results of the joint measuring control of diameter d, electrical resistance ρ and temperature t of the sample made of copper (in the temperature range from 20-160°C) and the results of determination of thermally dependent thermal ECT signals with the sample of equipment details and the values of specific normalized values that relate the ECT signals to the physical and mechanical characteristics of the samples of the equipment being monitored. Research limitations/implications: Product diameters range is 5 mm to 50 mm. The lower boundary is limited by the frequency of the magnetic field f = 20 Hz and the upper boundary by the diameter of the frame of the thermal eddy current transformer transducer is 50 mm. Perspective positions of work require further development in the direction of extending the limits of control of geometrical parameters of the samples due to the use of automated control systems based on overhead eddy current transformer transducers. Practical implications: The practical value of the work is to increase the overall likelihood of control of the parameters of brewing equipment parts by increasing its instrumental component Di, due to the reduction of measurement errors due to instrumental techniques and on the basis of computer modelling algorithms for three-parameter control of parts of brewing equipment, electrical and temperature parameters, allows to obtain the value of the overall control probability Dz = 0.998. Originality/value: The originality of the article is the study of the theoretical provisions of the eddy current transformer transducer and the implementation of a non-contact method of controlling the details of brewing equipment using computer simulation algorithms that take into account the modes of joint three-parameter control: at high values of the generalized parameter x (with three-parameter surface control), at small values of x (while controlling the value of the average cross section geometry, electrical, temperature settings) at a fixed frequency magnetic field (get information on the diameter d, resistivity ρ and temperature t with a certain depth of penetration of the magnetic field in the sample Δ).

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Wyposażenie krajowego rolnictwa w ciągniki w latach 2005-2015

Kamiński J. R., Tulska E.

Problemy Inżynierii Rolniczej

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2017

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R. 25, nr 3

33--47

PL

Celem pracy była analiza i ocena zmian ilościowych na krajowym rynku ciągników rolniczych w okresie członkostwa Polski w Unii Europejskiej. Zmiany przedstawiono za pomocą wskaźników dynamiki zmian o stałej i zmiennej podstawie. Wyliczono również przeciętne tempo zmian w analizowanym okresie. Całkowita liczba ciągników, według wyliczeń własnych, wzrosła o 170 373 szt. do poziomu 1 512 663 szt. na koniec badanego okresu. Przeciętne tempo wzrostu liczby ciągników wyniosło 1,1%. Wskaźnik liczby ciągników przypadającej na 100 ha UR zwiększył się w analizowanych latach z 8,44 do 10,40. Przeciętne tempo wzrostu wyniosło w całym okresie 1,9%. Powierzchnia UR przypadająca na 1 ciągnik zmniejszyła się z 11,85 do 9,62, a przeciętne tempo zmian tego wskaźnika kształtowało się na poziomie 1,9%. Taka sytuacja jest niekorzystna i żeby ją poprawić, trendy te należy odwrócić. Oznacza to konieczność zmniejszania liczby ciągników i zwiększania ich mocy.

EN

The aim of the study was to analyze and evaluate the quantitative changes on the domestic market of agricultural tractors. An analysis of farm equipment in agriculture tractors during the period of Poland's membership in the EU was carried out. The changes were presented by means of the change dynamics indicators dynamic with a fixed and variable basis. The average rate of change in the analyzed period was also calculated. The total number of tractors for own calculations increased by 170 373 units to the level of 1 512 663 units at the end of the period considered. The average growth rate of the number of tractors was 1.1%. The index of the number of tractors per 100 ha of UR increased in the analyzed years for own calculations from 8.44 to 10.40. The average growth rate in the entire period was 1.9%. The UR area per 1 tractor, in contrast to the previous indicator, fell from 11.85 to 9.62. The average rate of change of this indicator was 1.9%. This situation is unfavorable, and to improve it these trends should be reversed. This means a reduction in the number of tractors and increasing their power.

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Wskaźniki ilościowe jako podstawa porządkowania wielkości w konstruowaniu rankingów

Szromek A.

Zeszyty Naukowe. Organizacja i Zarządzanie / Politechnika Śląska

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2007

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z. 40

289-312

PL

Publikacja prezentuje niewielki fragment wiedzy o zjawiskach złożonych. Omówiono popularne formuły transformacji zmiennych diagnostycznych o charakterze ilościowym w zmienne (wskaźniki) syntetyczne, a następnie zaproponowano zastosowanie ich w konstrukcji rankingów turystycznych.

EN

The publication presents a small fraction of a widely developed branch of knowledge on complex phenomena. The author discussed popular transformations of (quantitative) diagnostic variables in synthetic indicators, and proposed use this indicators in construction of tourism rankings.