Temat: robust scheduling - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Total production maintenance and robust scheduling for a production system efficiency increasing
Autorzy:: Paprocka, I.
Tematy:: Total Productive Maintenance
robust scheduling
modeling
simulation; Pokaż więcej
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Powiązania:: https://bibliotekanauki.pl/articles/99766.pdf Link otwiera się w nowym oknie
Opis:: In the paper, the proposition of application of two methodologies: the predictive scheduling and Total Productive Maintenance – TPM to increase efficiency of a production system is presented. To assess wastes due to unplanned events in the machine’s work the Overall Equipment Effectiveness (OEE) indicator is applied. Any failure of a bottle neck decreases value of the OEE. In this paper, the problem of predicting a time of the bottle neck failure is considered. In the paper, models of a production system and failures are presented. For the bottle neck various reliability characteristics are computed: the probability that, beginning with moment t₀ , the first failure occurs after given time t, probability that in the interval [f ,g], there occurs at least one failure, failure intensity function, Mean Time To Failure (MTTF) and Mean Time of Repair (MTTR). Having the MTTF and MTTR of the bottle neck, a robust schedule is generated. At the time of predicted failure, preventive actions and technical survey of the machine are scheduled. In the second paper a numerical example is given.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Resource allocation for robust project scheduling
Autorzy:: Klimek, M.
Łebkowski, P.
Tematy:: resource-constrained project scheduling
robust scheduling
resource allocation; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/202374.pdf Link otwiera się w nowym oknie
Opis:: The paper presents a formal description of the resource allocation problem for resource-constrained project scheduling. A schedule can be executed by various resource flow networks which may differ in terms of resistance to disruptions occurring during project execution. The authors define such criteria of evaluating a resource flow network which can be more useful than robustness metrics used so far in the research. The authors discuss the importance of robust scheduling for execution projects and propose metrics for resource allocation robustness which take into consideration the stability of the final schedule. Those metrics make it possible to carry out a more precise analysis concerning the properties of the resource flow network in terms of its robustness to disruptions in comparison with a well known flexibility indicator, flex.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A numerical example of total production maintenance and robust scheduling application for a production system efficiency increasing
Autorzy:: Paprocka, I.
Urbanek, D.
Tematy:: Total Productive Maintenance
robust scheduling
modeling
simulation; Pokaż więcej
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Powiązania:: https://bibliotekanauki.pl/articles/99603.pdf Link otwiera się w nowym oknie
Opis:: In the paper, the proposition of application of two methodologies: the predictive scheduling and Total Productive Maintenance - TPM to increase efficiency of a production system is presented. In this paper, an example of problem of predicting a time of a bottle neck failure is presented. Using the Statistica program, histograms that show the graphical relationship of a number of observations and failure-free times of the bottle neck for historical periods are created. The fitting of the histograms to the theoretical distributions: normal, exponential, gamma and Weibull using appropriate tests (for example the Kolmogorov-Smirnov test for normal distribution) is researched. After finding distribution and setting parameters for historical periods, for the next scheduling horizon values of parameters are extrapolated using the regression method in the Statistica program. For the bottle neck various reliability characteristics are computed. Having the Mean Time To Failure (MTTF) and Mean Time of Repair (MTTR) of the bottle neck, robust schedule is generated. At the time of the predicted failure, preventive actions and technical survey of the machine are scheduled. The production system is modeled in the simulation program - Enterprise Dynamics 8.1.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Koncepcja zastosowania narzędzi predykcji w projektowaniu harmonogramów odpornych
Conception of using prediction tools in the robust schedules desining
Autorzy:: Sobaszek, Ł
Świć, A.
Gola, A.
Tematy:: szeregowanie zadań produkcyjnych
harmonogramowanie odporne
harmonogramowanie predyktywne
production scheduling
robust scheduling
predictive scheduling; Pokaż więcej
Wydawca:: Polskie Towarzystwo Zarządzania Produkcją
Powiązania:: https://bibliotekanauki.pl/articles/339691.pdf Link otwiera się w nowym oknie
Opis:: The development of competitiveness on world markets caused the need to increase production flexibility. An essential tool in achieving this purpose could be production scheduling. Unfortunately, the production process is associated with presence of numerous random events that negatively affect its course. Therefore, it is necessary to apply appropriate prediction methods which help to reduce its affect. The paper presents the conception of robust production scheduling. The typical scheduling problems and robust scheduling idea are described. Moreover, the current solutions of production scheduling under uncertainty are outlined. Finally, the idea of creating robust schedules based on previous production processes are presented. In the final part of the paper the author presented problems related to proposed idea.
Dostawca treści:: Biblioteka Nauki

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