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Tytuł:
Zastosowanie metody głównych składowych w kartach kontrolnych procesów wieloparametrowych
Application of Principal Components Method in Control Charts of Multi-Parameter Processes
Autorzy:
Volodarsky, Evgeniy T.
Kozyr, Oleh
Warsza, Zygmunt Lech
Powiązania:
https://bibliotekanauki.pl/articles/27312458.pdf
Data publikacji:
2023
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
kontrola wieloparametrowego procesu technologicznego
karty kontrolne Shewharta
metoda głównych składowych
Shewhart control charts
principal components method
control of a multi-parametric technological process
Opis:
W artykule opisano metodę głównych składowych PC (ang. Principal Components) służącą do tworzenia kart kontrolnych dla wieloparametrowych procesów wytwórczych o skorelowanych parametrach. Ocenę skuteczności zastosowania tej metody przeprowadzono na symulowanych danych, zbliżonych do wyników pomiarów uzyskanych w sterowaniu rzeczywistym procesem technologicznym. W wyniku modelowania kontroli procesu n-parametrowego otrzymano potwierdzenie skuteczności tej metody. Praca ta kontynuuje cykl publikacji autorów o kartach stosowanych w metodach kontroli jakości produkcji.
The article describes in detail the method of constructing control charts based on principal components. Evaluation of the effectiveness of the application of the method is carried out on simulated data, which are close to the measurement results obtained during the control of a real technological process. The results show that the proposed method is effective for controlling a multi-parameter technological process in the presence of a correlated parameters.
Źródło:
Pomiary Automatyka Robotyka; 2023, 27, 3; 65--71
1427-9126
Pojawia się w:
Pomiary Automatyka Robotyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Production cost calculation approach based on data collected during manufacturing process
Autorzy:
Krześniak, Grzegorz
Powiązania:
https://bibliotekanauki.pl/articles/23944755.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
cost calculation
cost modeling
manufacturing costs
control chart
quality costs
Statistical Process Control (SPC)
kalkulacja kosztów
modelowanie kosztów
koszty produkcji
wykres kontrolny
koszty jakości
statystyczna kontrola procesu
Opis:
The aim of the article is to present a proposal and discuss the production cost calculation procedures based on data collected during manufacturing process, according to standard SPC control chart evaluation. It is applied as a tool to support the process of continuous improvement of the manufacturing process and improve profitability by reducing the cost of production. Research methodology - the study uses the results of a literature review on the issue of cost analysis and their modeling. Key elements are the main cost components, but also those that are considered less important and may be overall decisive. Application of Statistical Process Control - as a method of data collection for cost modeling to improve overall cost structure is proposed. Originality/value - the considerations presented in the study may be the basis for determining the key components of the cost of production. The proposed simulation model allows for the determination of the main quality cost factors. This, in turn, should allow to define the main directions of searching for the optimization of the product cost in order to achieve the expected level of cost and quality.
Źródło:
System Safety : Human - Technical Facility - Environment; 2022, 4, 1; 19-27
2657-5450
Pojawia się w:
System Safety : Human - Technical Facility - Environment
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of X-S Control Cards to Parameter Control in the Machining Process of Piston Castings for Internal Combustion Engines
Autorzy:
Krępa, Adam
Piątkowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2126905.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
control cards
casting quality
machining of castings
SPC
Statistical Process Control
karty kontrolne
jakość odlewów
obróbka odlewów
statystyczna kontrola procesu
Opis:
This article discusses the possibility of using a two-track X-S control card on a Mesas device to control the production process parameters of piston castings for combustion engines. The research was carried out at the Federal-Mogul Gorzyce company. The basis for estimating the variability of the process results from the mean value (X) is the standard deviation (S). Thanks to specially designed measuring stations that use algorithms to calculate process indicators (Cp and/or Cpk) and their visualization, the cost of manufacturing products and the number of non-compliant products (scraps) are reduced. The process stability was investigated by measuring the key dimensions of the piston casting in a specific population and a given measurement cycle. Taking into account the precision of details, their technical condition, and surface quality, the production machines and cutting tools were optimally selected. It has been found that an important element of the effective use of Statistical Process Control (SPC) are trained/experienced operators who can correctly interpret the resulting control chart forms.
Źródło:
Archives of Foundry Engineering; 2021, 21, 4; 116--120
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessing the representative elementary volume of rock types by X-ray computed tomography (CT) – a simple approach to demonstrate the heterogeneity of the Boda Claystone Formation in Hungary
Autorzy:
Abutaha, Saja M.
Geiger, János
Gulyás, Sándor
Fedor, Ferenc
Powiązania:
https://bibliotekanauki.pl/articles/2204358.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Hounsfield Unit
HU
autoregressive integrated moving average
ARIMA
Statistical Process Control
SPC technique
skala Hounsfielda
model ARIMA
statystyczna kontrola procesu
SPC
Opis:
X-ray computed tomography (CT) can reveal internal, three-dimensional details of objects in a non-destructive way and provide high-resolution, quantitative data in the form of CT numbers. The sensitivity of the CT number to changes in material density means that it may be used to identify lithology changes within cores of sedimentary rocks. The present pilot study confirms the use of Representative Elementary Volume (REV) to quantify inhomogeneity of CT densities of rock constituents of the Boda Claystone Formation. Thirty-two layers, 2 m core length, of this formation were studied. Based on the dominant rock-forming constituent, two rock types could be defined, i.e., clayey siltstone (20 layers) and fine siltstone (12 layers). Eleven of these layers (clayey siltstone and fine siltstone) showed sedimentary features such as, convolute laminations, desiccation cracks, cross-laminations and cracks. The application of the Autoregressive Integrated Moving Averages, Statistical Process Control (ARIMA SPC) method to define Representative Elementary Volume (REV) of CT densities (Hounsfield unit values) affirmed the following results: i) the highest REV values corresponded to the presence of sedimentary structures or high ratios of siltstone constituents (> 60%). ii) the REV average of the clayey siltstone was (5.86 cm3) and (6.54 cm3) of the fine siltstone. iii) normalised REV percentages of the clayey siltstone and fine siltstone, on the scale of the core volume studied were 19.88% and 22.84%; respectively. iv) whenever the corresponding layer did not reveal any sedimentary structure, the normalised REV values would be below 10%. The internal void space in layers with sedimentary features might explain the marked textural heterogeneity and elevated REV values. The drying process of the core sample might also have played a significant role in increasing erroneous pore proportions by volume reducation of clay minerals, particularly within sedimentary structures, where authigenic clay and carbonate cement were presumed to be dominant.
Źródło:
Geologos; 2021, 27, 3; 157--172
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodology for Diagnosing the Causes of Die-Casting Defects, Based on Advanced Big Data Modelling
Autorzy:
Okuniewska, A.
Perzyk, M. A.
Kozłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/2126910.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
foundry industry
die casting
castings defects
process control
data analytics
application of information technology
przemysł odlewniczy
odlewanie ciśnieniowe
wady odlewów
kontrola procesu
analiza danych
zastosowanie technologii informatycznych
Opis:
The purpose of this paper was to develop a methodology for diagnosing the causes of die-casting defects based on advanced modelling, to correctly diagnose and identify process parameters that have a significant impact on product defect generation, optimize the process parameters and rise the products’ quality, thereby improving the manufacturing process efficiency. The industrial data used for modelling came from foundry being a leading manufacturer of the high-pressure die-casting production process of aluminum cylinder blocks for the world's leading automotive brands. The paper presents some aspects related to data analytics in the era of Industry 4.0. and Smart Factory concepts. The methodology includes computation tools for advanced data analysis and modelling, such as ANOVA (analysis of variance), ANN (artificial neural networks) both applied on the Statistica platform, then gradient and evolutionary optimization methods applied in MS Excel program’s Solver add-in. The main features of the presented methodology are explained and presented in tables and illustrated with appropriate graphs. All opportunities and risks of implementing data-driven modelling systems in high-pressure die-casting processes have been considered.
Źródło:
Archives of Foundry Engineering; 2021, 21, 4; 103--109
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systemy nadzoru: prerekwizyty wymagane na rzecz różnych strategii UR
Autorzy:
Nowicki, Ryszard
Powiązania:
https://bibliotekanauki.pl/articles/20726244.pdf
Data publikacji:
2021
Wydawca:
Wydawnictwo Druk-Art
Tematy:
utrzymanie ruchu
systemy UR
systemy nadzoru
Przemysł 4.0
kontrola procesu produkcyjnego
dane diagnostyczne
maintenance
UR systems
surveillance systems
Industry 4.0
control of the production process
diagnostic data
Źródło:
Napędy i Sterowanie; 2021, 23, 11; 44-56
1507-7764
Pojawia się w:
Napędy i Sterowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model nadzoru metrologicznego nad urządzeniami procesowymi do pomiaru THT
A model of metrological supervision of process analyzers for THT measuring
Autorzy:
Huszał, Anna
Powiązania:
https://bibliotekanauki.pl/articles/1834043.pdf
Data publikacji:
2020
Wydawca:
Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:
analizatory procesowe
nawanianie gazu
kontrola procesu nawaniania
process analyzers
gas odorization
odorization process control
Opis:
The increasing demand for process analyzers used in the supervision of the gaseous fuels odorizing process and the related higher and higher users’ requirements in terms of the quality of the results obtained lead to the growing need to verify the correctness of operation thereof and to confirm the reliability of measurement results. At present, however, there are no appropriate legal regulations concerning the control over this type of apparatus, as well as specifying the uncertainty level that the gas odorant concentration should be determined with. The normative regulations existing in this area are not unequivocal and can be interpreted in different ways, which leads to the situation when process equipment for measuring tetrahydrothiophene (THT) concentration in the gas can often lack proper metrological supervision. It is therefore necessary to properly select and verify appropriate methods to control the correctness of the process equipment indications and their implementation into the periodic check program. An extremely desirable method of supervision is to check or calibrate the analyzers in process conditions, without their dismantling for the time of checking. In turn, this entails the necessity to determine the possibility of conducting periodic metrological supervision over the measurement results correctness of THT process analyzers with the use of reference devices. The article presents a comparison of two methods currently used in metrological supervision of process analyzers for measuring the concentration of THT in the natural gas distribution gird. The results of checks of the proper functioning of these devices obtained by means of comparison with the laboratory test and the on-line comparative measurement method were analyzed. The conducted research verified the main sources of errors that have a significant impact on the correctness of results obtained by means of selected test methods. The results obtained showed the existence of a systematic error for the comparison method with a laboratory test. They also demonstrated the possibility of using the on-line comparative measurement method to carry out periodic calibrations or checks of the correct operation of THT analyzers in process conditions.
Źródło:
Nafta-Gaz; 2020, 76, 12; 955--963
0867-8871
Pojawia się w:
Nafta-Gaz
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Systemy informatyczne wspomagające produkcję
It systems supported production
Autorzy:
Żyłka, Wojciech Marek
Powiązania:
https://bibliotekanauki.pl/articles/1818868.pdf
Data publikacji:
2020
Wydawca:
Wydawnictwo AWART
Tematy:
kontrola procesu produkcji
ERP/ERP II
IT system
planowanie procesu produkcji
production process
planning production process
control production process
Opis:
W procesach planowania produkcji i sterowania ich przebiegiem coraz częściej wykorzystuje się informatyczne systemy ERP/ERPII. Stanowią one główne źródło informacji i wspierają firmy w podejmowaniu decyzji. Są wsparciem informacyjnym, organizacyjnym i finansowym dla przedsiębiorstw, zastępując niekiedy pracę człowieka w wielu obszarach planowania i kierowania produkcją.
Production planning and control processes are increasingly using ERP/ERP II IT systems. They are main source of information and support companies in making decisions. They provide information, organizational and financial support for companies, sometimes replacing human work in many areas of production planning and management.
Źródło:
Obróbka Metalu; 2020, 1; 28--33
2081-7002
Pojawia się w:
Obróbka Metalu
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data processing in self-controlling enterprise processes
Autorzy:
Zaborowski, Mirosław
Powiązania:
https://bibliotekanauki.pl/articles/200356.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kontrola procesów w przedsiębiorstwie
złożony system kontroli
Przemysł 4.0
stan procesu przedsiębiorstwa
integracja przedsiębiorstwa
enterprise process control
complex control system
Industry 4.0
enterprise process state
enterprise integration
Opis:
This study presents cause-effect dependencies between inputs and outputs of business transitions that are software objects designed for processing information-decision state variables in integrated enterprise process control (EntPC) systems. Business transitions are elementary components of controlling units in enterprise processes that have been defined as self-controlling, generalized business processes, which may serve not only as business processes but also as business systems or their roles. Business events, which have zero durations by definition, are interpreted as executions of business actions that are main operations of business transitions. Any ordered set of business actions, performed in the controlling unit of a given enterprise process and attributed to the same discrete-time instant, is referred to as ‘the information-decision process’. The i-d processes may be substituted by managerial business processes, performed on the lower organizational level, where durations of activity executions are greater than zero, but discrete-time periods are considerably shorter. In such a case, procedures of business actions are performed by corresponding activities of managerial processes, but on the level of business transitions the durations of their executions are imperceptible, and many different business events may occur at the same discrete-time instant. It has been demonstrated in the paper how to control business actions to ensure that a given i-d state variable may not change more than once at a given instant. Furthermore, the rules of designing the i-d process structures, which prevent random changes of transitory states, have been presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 1; 3-20
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Introducing Advanced Data Analytics in Perspective of Industry 4.0 in a Die Casting Foundry
Autorzy:
Perzyk, M.
Dybowski, B.
Kozłowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/381424.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
application of information technology
foundry industry
mechanical properties
die casting
process control
data analytics
zastosowanie technologii informatycznych
przemysł odlewniczy
właściwości mechaniczne
odlewanie
kontrola procesu
analityka danych
Opis:
The paper presents some aspects of a development project related to Industry 4.0 that was executed at Nemak, a leading manufacturer of the aluminium castings for the automotive industry, in its high pressure die casting foundry in Poland. The developed data analytics system aims at predicting the casting quality basing on the production data. The objective is to use these data for optimizing process parameters to raise the products’ quality as well as to improve the productivity. Characterization of the production data including the recorded process parameters and the role of mechanical properties of the castings as the process outputs is presented. The system incorporates advanced data analytics and computation tools based on the analysis of variance (ANOVA) and applying an MS Excel platform. It enables the foundry engineers and operators finding the most efficient process variables to ensure high mechanical properties of the aluminium engine block castings. The main features of the system are explained and illustrated by appropriate graphs. Chances and threats connected with applications of the data-driven modelling in die casting are discussed.
Źródło:
Archives of Foundry Engineering; 2019, 1; 53-57
1897-3310
2299-2944
Pojawia się w:
Archives of Foundry Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Quality assurance processes in series production of car elements
Autorzy:
Mazur, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/103959.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:
quality assurance
automotive industry
statistical control
process quality indicato
zapewnienie jakości
przemysł motoryzacyjny
kontrola statystyczna
wskaźnik jakości procesu
Opis:
The paper presents partial results of qualitative analyzes conducted on the production line in the automotive industry. The subject of analyzes is the safety element for motor vehicles and meeting the quality requirements. The quality requirements that the manufacturer must meet are based on customer guidelines (automotive concern) for components manufactured for first assembly. The presented analyzes relate to the identification of production discrepancies and the results of statistical analyzes for the cutting process and component control for one type of cable. This work contains basic issues in the field of production management for elements intended for the automotive market, detailing the basic applicable rules and standards in this field. It also contains the results of the analysis and evaluation of the production process of the company operating on this market. A preliminary analysis of the causes of production problems and statistical analysis for the indicated process was presented.
Źródło:
Quality Production Improvement - QPI; 2019, 1, 1; 610-617
2657-8603
Pojawia się w:
Quality Production Improvement - QPI
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Information-decision model for self-controlling enterprise processes
Autorzy:
Zaborowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/125518.pdf
Data publikacji:
2018
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
enterprise integration
complex control system
enterprise modelling
enterprise process control
industry 4.0
enterprise architecture
integracja przedsiębiorstwa
złożony system kontroli
modelowanie przedsiębiorstw
kontrola procesu produkcyjnego
przemysł 4.0
architektura korporacyjna
Opis:
This study demonstrates that integrated management and direct control systems may be combined into integrated enterprise process control (EntPC) systems, which are composed of self-controlling enterprise business processes. A business process has been defined as a control system for business activities, which are considered to be business processes of the lower level, or as base processes that are control systems for control plants in the form of infrastructure operations. An enterprise process also influences its delivery. This description of a business process is usually compared with definitions used in such approaches as BPMN, YAWL, ARIS and DEMO and MERODE. Each enterprise process has its own controlling unit that contains one information unit and one decision unit, as well as memory places of the information-decision state variables that are processed by the business transitions that belong to these units. The i-d state variables are attributes of business objects, i.e. business units, business roles, business activities, business accounts and business products. Their values are transferred between business transitions that belong to the same or different controlling units. Relationships between business objects, business transitions and i-d state variables, as well as the other most important concepts of the EntPC system framework (EntPCF), are presented in this paper as the class diagrams of the enterprise process control language (EntPCL).
Źródło:
Engineering Management in Production and Services; 2018, 10, 4; 34-54
2543-6597
2543-912X
Pojawia się w:
Engineering Management in Production and Services
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of a computer tool monitoring system in CNC machining centres
Autorzy:
Kolny, D.
Więcek, D.
Ziobro, P.
Krajčovič, M.
Powiązania:
https://bibliotekanauki.pl/articles/117808.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
current process control
tool wear
monitoring system
process optimization
kontrola procesu
zużycie narzędzia
system monitorujący
optymalizacja procesu
Opis:
The article presents practical knowledge about production process optimisation as a result of implementing a specialized system monitoring the work of machining tools. It features complex results of the conducted research with use of dedicated equipment and software, whose unconventional application may appear to be an effective IT tool for taking operational and strategic decisions in the machining area. This results from the possibility of analysing the obtained data in both current and long-term perspective, and taking decisions on this basis, which significantly conditions the rationality of using this type of solutions.
Źródło:
Applied Computer Science; 2017, 13, 4; 7-19
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the Models of the Air Gauge Static Characteristics
Autorzy:
Jermak, C. J.
Piątkowski, R.
Dereżyński, J.
Rucki, M.
Powiązania:
https://bibliotekanauki.pl/articles/140018.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
air gauge
dynamic measurement
in-process control
manometr do powietrza
pomiar dynamiczny
kontrola w trakcie procesu
Opis:
In the article, the authors analyze and discuss several models used to the calculation of air gauge characteristics. The model based on the actual mass flow (which is smaller than the theoretical one) was proposed, too. Calculations have been performed with a dedicated software with the second critical parameters included. The air gauge static characteristics calculated with 6 different models were compared with the experimental data. It appeared that the second critical parameters model (SCP) provided the characteristics close to the experimental ones, with an error of ca. 3% within the air gauge measuring range.
Źródło:
Archive of Mechanical Engineering; 2017, LXIV, 1; 93-110
0004-0738
Pojawia się w:
Archive of Mechanical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jakość prawa miejscowego jako warunek dobrze funkcjonującego samorządu
The quality of the local law as a condition of a well-functioning local government
Autorzy:
Sitek, Magdalena
Powiązania:
https://bibliotekanauki.pl/articles/452359.pdf
Data publikacji:
2017
Wydawca:
Wyższa Szkoła Gospodarki Euroregionalnej im. Alcide De Gasperi w Józefowie
Tematy:
local law
the quality of the law
the resolution of the municipal council
the effects evaluation of regulation
the control of process of creating resolutions
prawo miejscowe
jakość prawa
uchwała rady gminy
ocena skutków regulacji
kontrola procesu tworzenia uchwał
Opis:
The local law is an important element of the functioning of local society. Therefore, it is necessary that it should be the best quality law. This law is a subject to similar rules of legislative technique as the common law – the acts or the regulations. The doctrine postulates that the obligation to carry out an impact assessment of the regulations should be included into this procedure in the case of adopted resolutions, which will not only contribute to increase their purpose, but also reduce their excessive number. Creating of the high-quality local law requires social participation in the process of its creation. In this case, the legislator is obliged to create appropriate conditions for citizens to be able to participate, individually and as a collective, in the meetings of the council.
Prawo miejscowe jest ważnym elementem funkcjonowania lokalnej społeczno- ści. Dlatego konieczne jest, aby było ono jak najlepszej jakości. Prawo to podlega podobnym zasadom techniki legislacyjnej, jak prawo powszechne, czyli ustawy lub rozporządzenia. W doktrynie postuluje się, aby do tej procedury włączyć obowiązek przeprowadzenia oceny skutków regulacji w przypadku podejmowanych uchwał, co przyczyni się nie tylko do zwiększenia ich celowości, ale również do ograniczenia nadmiernej ich ilości. Tworzenie prawa miejscowego wysokiej jako ści wymaga partycypacji społecznej w procesie jego tworzenia. W tym przypadku ustawodawca zobowiązany jest do stworzenia odpowiednich warunków mieszkań- com, aby mogli zarówno jednostkowo, jak i w formie zbiorowej uczestniczyć w posiedzeniach rady.
Źródło:
Journal of Modern Science; 2017, 32, 1; 145-159
1734-2031
Pojawia się w:
Journal of Modern Science
Dostawca treści:
Biblioteka Nauki
Artykuł
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