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Flexible production flow control systems

Chrobot Jarosław

Zarządzanie Przedsiębiorstwem

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2021

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Vol. 24, nr 1-2

2--7

EN

Requirements regarding the quality and full traceability of delivered products in some industrial sectors, such as the food, pharmaceutical and automotive industries, where the life and health of the end user depends on the quality of the product, cause production flow control systems (PFC) to become an important element of the functioning of production enterprises. PFC systems are IT systems that are generally used for recording production data (in a database) at various stages of industrial processes, mainly from PLC controllers (in this respect they perform the function of traceability systems, that enable tracking products), but also provide blocking of identifiable products, which were incorrectly processed during earlier stages of production or follow wrong technology sequence. The desirable feature of such systems is their flexibility, which is characterised by their scalability and configurability. Configurability is the ability to include different processes into the PFC system in a relatively short time. The concept of a configurable system must be well considered and different material flow cases must be taken into account to avoid future dramatic changes in the IT system. Scalability is the ability to include more and more processes under control of the PFC system without the significant impact on its effectiveness. The PFC systems use computer networks to process production data, so the scalability of PFC systems depends on their modular architecture in the network. The article discusses basic features and possible PFC architectures, as well as two examples of configurable PFC systems along with their analysis and assessment. The described systems are the result of projects in which the author of this article participated, the aim of which was to develop and launch a flexible PFC system that meets the basic industrial requirements from the area of discrete manufacturing.

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Systemy śledzenia produkcji / kontroli przepływu - uniwersalne rozwiązania wobec dedykowanych aplikacji

Chrobot J.

Zarządzanie Przedsiębiorstwem

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2016

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Vol. 19, nr 3

2--11

EN

Requirements for quality and the full traceability of products supplied in some industries, such as eg. the food industry, the pharmaceutical industry as well as automotive industry, result that the implementation of production flow control systems (FCS) becomes a very important element in the functioning of enterprises. Production flow control systems are used generally for recording production data at different stages of industrial processes (in this respect, they fulfill the function of traceability systems), but also provide blocking of incorrectly processed identifiable components during the earlier stages of the production. The information provided by traceability can be the basis for the functioning of integrated information systems. Production flow control systems ensure the recording of important information from the point of view of customer that allows the capture of defective products, analysis of the causes of these defects, and defense against potential complaint or even a significant reduction in the number of complaints. Applied are dedicated or universal solutions, adaptable to a variety of configuration lines / production cells. Dedicated solutions (for a specific production line) are basically always developed from scratch, taking into account the specificity of the product flow. Then the structure of the data in the PLC has to be adjusted, as well as the structure of the database and the database queries. Dedicated systems have the advantage that their action is fast, whereas the drawback is a longer start-up time and modification / expansion of functionality. On the other hand, universal solutions allow to configure the number of workstations and their type (controlled by a PLC or PC), their network addresses, as well as the types of products allowed there without changing the software. The advantage of universal solutions is that additional production workstations can be added very fast to the system, while the disadvantage may be longer lasting query the database and exchange information with the PLC. The concept of an universal system must be well thought and considered have to be different configuration cases of the material flow. Poorly thought-out concept takes revenge on the creator by the necessity of profound changes in the structure of the data and the application code. The purpose of this article is to present the advantages and disadvantages of dedicated and universal TCS / FCS systems.

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Wykorzystanie wybranych metod planowania i sterowania produkcją w controllingu produkcji

Plich M., Rypińska P., Trojanowska J., Koliński A.

Logistyka

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2011

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nr 5

PL

Głównym celem prowadzenia działalności gospodarczej jest generowanie zysków. Ze względu na bardzo dużą konkurencję, przedsiębiorstwa skupiają się na strategii utrzymania obecnej pozycji na rynku. Kadra kierownicza przedsiębiorstwa jest zmuszona do podejmowania trafnych decyzji w bardzo krótkim czasie. Z pomocą przychodzą narzędzia controllingu, które mają na celu ocenę efektywności wykorzystania poszczególnych metod planowania i sterowania produkcją. Należy jednak pamiętać, że controlling produkcji nadal jest bardzo pobieżnie omówiony w literaturze naukowej i specjalistycznej. Brak wystarczającej wiedzy na ten temat doprowadza do sytuacji, że przedsiębiorstwa produkcyjne mogą unikać działań z nim związanych. W niniejszym artykule autorzy przedstawiają wybrane metody planowania i sterowania produkcją oraz dokonują próby oceny efektu ich wykorzystania.

EN

The main purpose of business is to generate profits. Due to the extremely high competition, enterprises are focused on strategies maintaining current market position. Executives are obliged enterprises to make informed decisions in a very short time. Controlling tools are designed to assess the effectiveness of using different methods of production planning and flow control. It should be remembered that production controlling has still been very roughly discussed in academic or professional literature. Lack of reliable knowledge concerning this matter causes that companies avoid activities connected with using it. In this article, authors present some methods of production planning and flow control, and also make efforts to assess the effect of their using.

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Planowanie zadań dla zautomatyzowanego systemu wytwarzania

Pierzchała W.

Pomiary Automatyka Robotyka

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2001

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R. 5, nr 11

5--7

PL

Przedstawiono moduł planowania zadań w Otwartym Systemie Sterowania Wytwarzaniem. Istota działania modułu polega na weryfikowaniu przygotowanego wariantu planu w wirtualnym procesie wytwarzania.

EN

There is presented the module for job planning in Open System Manufacturing Control. The module performance consists in revision of plan prepared in virtual manufacturing process.