Wyniki wyszukiwania - BazTech

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Zastosowanie metod teorii ograniczeń i dynamicznego grupowania zadań do wspomagania planowania procesów obróbki cieplnej

Mleczko Janusz

Zarządzanie Przedsiębiorstwem

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2019

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Vol. 22, nr 4

7--13

EN

Support of planning heat treatment processes in small batch production is very complex. In the analysed case, the bottlenecks of the processes were located on heat treatment. The difficulty in planning is due to necessity of adapting available resources to changing demand requirements. In the conditions of unit production crucial role plays changeovers time, availability of resources and cost of processing. Due to NP- difficult nature of optimization a simplified method was used. It was a complex of theory of constraints and dynamic task grouping. This is one of the attempts to solve the supporting process production problem with a method enabling its practical use.

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Wspomaganie podejmowania decyzji w dynamicznych sieciach wytwarzania

Olender M.

Zarządzanie Przedsiębiorstwem

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2016

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Vol. 19, nr 2

8--13

EN

Dynamics on the market makes, that search for more effective solutions in planning the production flow. Opportunities, which open the market for companies, as new basis of cooperation, have to go hand in hand with the flexibility and ability to adapt to the requirements of the environment. The problem of scheduling production flow is more complicated, because the virtual manufacturing network create a single organizations, geographically dispersed, functioning temporarily, as a one body, to realize the effect an order. In the whole production planning and choosing the route from alternative routes should be considered still a problem of transport between the participants in the virtual network. To planning the flow production and choice of route used formalisms derived from game theory. The article presents the record of the decision problem for the production model in which the role players perform the goal functions. This functions have specific strategies and endeavour to win. The choice of strategy depends on which player starts the first game. Further work will be associated with the analysis of the impact of different combinations of strategies on the results of the game, with certain restrictions, as well as attempts to implement formalism to choose strategies in mixed strategies.

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Multicriterial Optimisation of the Manufacturing Process of a Spindle Working in a Ring Spinning Frame

Płonka S, Ogiński L

Fibres & Textiles in Eastern Europe

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2014

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Vol. 22, no. 6 (108)

51—58

EN

In the paper a method of the best variant selection of the manufacturing process of a spindle with a collapsed balloon crown of a ring spinning frame is presented. The method implements the original optimisation procedure based on the given criteria, taking into consideration the importance of the criteria. The unit manufacturing cost and five criteria of the manufacturing quality were taken as the assessment criteria, and the knowledge of experts was used to determine the importance of the criteria given for assessment. Each expert built his own importance matrix of the assessment criteria, comparable in pairs, using the Saaty method. On the basis of a cumulative matrix the weights of individual criteria were determined. The criteria of the assessment obtained from calculations and measurements were normalised. In the next stage, normalised decisions were created by raising each assessment to a power equal to the corresponding weight. In the last stage of the proceedings a single, optimal alignment comprising the smallest s-th components of the individual decisions d1, d2, …, dm was created. The variant which corresponds to the largest component of the optimal alignment is assumed as the best.

PL

W pracy przedstawiono metodę wyboru najlepszego wariantu procesu wytwarzania wrzeciona z nasadką antybalonową przędzarki obrączkowej. Zastosowano ryginalną metodę postępowania optymalizacyjnego ze względu na przyjęte kryteria z uwzględnieniem ich ważności. Jako kryteria oceny przyjęto jednostkowy koszt wytwarzania oraz pięć kryteriów jakości wytwórczej. Do określenia ważności przyjętych do oceny kryteriów wykorzystano wiedzę ekspertów. Każdy ekspert zbudował macierz ocen ważności kryteriów, porównywalnych parami, metodą Saaty’ego. Na podstawie macierzy zbiorczej wyznaczono wagi poszczególnych kryteriów. Kryteria oceny uzyskane z obliczeń i pomiarów poddano normalizacji. Następnie utworzono decyzje unormowane przez podniesienie każdej oceny do potęgi równej odpowiedniej wadze. W ostatnim etapie utworzono jedno uszeregowanie optymalne, którego składnikami są najmniejsze s-te składniki poszczególnych decyzji d1, d2, …, dm. Wariantem najlepszym jest ten, któremu odpowiada największy składnik uszeregowania optymalnego.