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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Arquitetura de sistema de planejamento e controle da produção no contexto de empresa virtual. / Production planning and control system architecture in virtual enterprise context.

Pessoa, Marcosiris Amorim de Oliveira 24 April 2015 (has links)
Em um mercado global, tem sido observada a tendência para a dispersão geográfica das fabricas. Esta dispersão e motivada pela oportunidade de explorar as vantagens locais, sob diferentes pontos de vista. Essa estrutura também permite a interação mais intensa entre plantas de diferentes empresas produtivas. Neste sentido, o conceito de Empresa Virtual (EV) e fundamental para explorar novas estratégias de negócios, tais como foco nas competências essenciais, orientação máxima para o cliente e produção distribuída. No entanto, nesta nova estrutura produtiva, há novos requisitos para o planejamento e para o estabelecimento da data de entrega dos pedidos. Um sistema de Planejamento e Controle da Produção (PCP) convencional utiliza uma arquitetura hierárquica, o que não atende o requisito de autonomia das empresas parceiras. Para atender a essas novas exigências, este trabalho apresenta uma arquitetura de sistemas de planejamento e controle da produção no contexto de EV. Na proposta são utilizados os conceitos de janelas de tempo em conjunto com propagação de restrições para atender os requisitos de prazo de entrega de produtos. Estes dois conceitos tem sido amplamente utilizados na literatura relacionada a sistemas de planejamento convencionais, no entanto, não no contexto de EV. Nesta abordagem, as janelas de tempo delimitam o intervalo de alocação das tarefas nos sistemas de produção envolvidos, enquanto as restrição de capacidade identificam janelas de tempo factíveis considerando a importância da data de vencimento do pedido. E apresentado um exemplo da utilização da arquitetura e um exemplo de implementação. Este trabalho engloba EVs com empresas parceiras de diversos tipos de produção (produção em lotes e produção discreta). E utilizado o Production Flow Schema (PFS) para modelagem dos processos produtivos segundo uma abordagem hierárquica, com base em sucessivos renamentos para construir o modelo de forma progressiva e estruturada onde as propriedades do modelo ficam asseguradas por construção. Este refinamento gera sub-grafos em Rede de Petri, que são utilizados para a analise e o controle do processo produtivo. / In a global market, the trend for geographical dispersion of manufacturing plants has been observed. This dispersion is motivated by the opportunity to exploit local advantages under dierent viewpoints. This structure also allows for more intense interaction between plants of dierent productive enterprises. In this sense, the concept of Virtual Enterprise (VE) is fundamental to explore new business strategies such asfocus on core competencies,maximal customer orientationanddistributed production. However, in this new productive structure, there are new requirements for planning and for establishing the delivery date of the orders. A conventional Production Planning and Control system (PPC) uses a hierarchical architecture, which does not meet the requirement of autonomy of the partners companies. To address these new requirements, this work introduces a Production Planning and Control System Architecture in EV context. In the proposal are used the concepts oftime windowsandconstraint propagationto meet the deadline requirements of product delivery. These two concepts have been widely used in the literature relating to conventional planning systems, however, not in the EV context. In this approach, thetime windowsdelimit the allocation range of tasks in production systems involved, while the capacity constraint identify the feasible time window considering the importance of the ordes due date. An example of using the architecture and an implementation is presented. This work includes EVs with partner companies of various types of production (production batch and discrete manufacturing). Production Flow Schema (PFS) is used for modeling the processes according to a hierarchical approach based on successive renements to construct progressive and structured model where the properties of model are ensured by construction. This renement generates sub-graphs in Petri Net, which are used for the analysis and control of the production process.
2

Arquitetura de sistema de planejamento e controle da produção no contexto de empresa virtual. / Production planning and control system architecture in virtual enterprise context.

Marcosiris Amorim de Oliveira Pessoa 24 April 2015 (has links)
Em um mercado global, tem sido observada a tendência para a dispersão geográfica das fabricas. Esta dispersão e motivada pela oportunidade de explorar as vantagens locais, sob diferentes pontos de vista. Essa estrutura também permite a interação mais intensa entre plantas de diferentes empresas produtivas. Neste sentido, o conceito de Empresa Virtual (EV) e fundamental para explorar novas estratégias de negócios, tais como foco nas competências essenciais, orientação máxima para o cliente e produção distribuída. No entanto, nesta nova estrutura produtiva, há novos requisitos para o planejamento e para o estabelecimento da data de entrega dos pedidos. Um sistema de Planejamento e Controle da Produção (PCP) convencional utiliza uma arquitetura hierárquica, o que não atende o requisito de autonomia das empresas parceiras. Para atender a essas novas exigências, este trabalho apresenta uma arquitetura de sistemas de planejamento e controle da produção no contexto de EV. Na proposta são utilizados os conceitos de janelas de tempo em conjunto com propagação de restrições para atender os requisitos de prazo de entrega de produtos. Estes dois conceitos tem sido amplamente utilizados na literatura relacionada a sistemas de planejamento convencionais, no entanto, não no contexto de EV. Nesta abordagem, as janelas de tempo delimitam o intervalo de alocação das tarefas nos sistemas de produção envolvidos, enquanto as restrição de capacidade identificam janelas de tempo factíveis considerando a importância da data de vencimento do pedido. E apresentado um exemplo da utilização da arquitetura e um exemplo de implementação. Este trabalho engloba EVs com empresas parceiras de diversos tipos de produção (produção em lotes e produção discreta). E utilizado o Production Flow Schema (PFS) para modelagem dos processos produtivos segundo uma abordagem hierárquica, com base em sucessivos renamentos para construir o modelo de forma progressiva e estruturada onde as propriedades do modelo ficam asseguradas por construção. Este refinamento gera sub-grafos em Rede de Petri, que são utilizados para a analise e o controle do processo produtivo. / In a global market, the trend for geographical dispersion of manufacturing plants has been observed. This dispersion is motivated by the opportunity to exploit local advantages under dierent viewpoints. This structure also allows for more intense interaction between plants of dierent productive enterprises. In this sense, the concept of Virtual Enterprise (VE) is fundamental to explore new business strategies such asfocus on core competencies,maximal customer orientationanddistributed production. However, in this new productive structure, there are new requirements for planning and for establishing the delivery date of the orders. A conventional Production Planning and Control system (PPC) uses a hierarchical architecture, which does not meet the requirement of autonomy of the partners companies. To address these new requirements, this work introduces a Production Planning and Control System Architecture in EV context. In the proposal are used the concepts oftime windowsandconstraint propagationto meet the deadline requirements of product delivery. These two concepts have been widely used in the literature relating to conventional planning systems, however, not in the EV context. In this approach, thetime windowsdelimit the allocation range of tasks in production systems involved, while the capacity constraint identify the feasible time window considering the importance of the ordes due date. An example of using the architecture and an implementation is presented. This work includes EVs with partner companies of various types of production (production batch and discrete manufacturing). Production Flow Schema (PFS) is used for modeling the processes according to a hierarchical approach based on successive renements to construct progressive and structured model where the properties of model are ensured by construction. This renement generates sub-graphs in Petri Net, which are used for the analysis and control of the production process.
3

Инструменты стратегического планирования внедрения систем оперативно- производственного планирования на промышленном предприятии : магистерская диссертация / Strategic planning tools for the implementation of operational and production planning systems in an industrial enterprise

Никулин, А. Д., Nikulin, A. D. January 2024 (has links)
Актуальность исследования. В условиях рынка, ориентирующего каждого производителя и предпринимателя на высокий конечный результат, планирование приобретает новые функции на российских предприятиях. Планирование направлено не только на обеспечение производства конкурентоспособной продукции, но и на содействие полной занятости ресурсов, справедливому распределению доходов и улучшению качества жизни. Производственное планирование является одним из главных направлений управлением производства. Его главная особенность заключается в том, что формирование запланированных производственным подразделением задач строго связано с организацией их выполнения. Актуальность данной темы заключается в том, что для выпуска продукции в точное время при колебаниях спроса необходимо совершенствовать планирование на предприятии. Цель разработка методического инструментария к внедрению систем оперативно-производственного планирования и к оценке уровня готовности предприятия. Задачи исследования: - изучить инструменты стратегического планирования, используемые на промышленном предприятии при внедрении системы оперативно-производственного планирования; - исследовать опыт внедрения оперативно-производственного планирования на предприятии, эффект от внедрения; - разработать методический инструментарий к оценке уровня готовности предприятия для внедрения систем оперативно-производственного планирования. Объект исследования – Промышленные предприятия, внедряющие систему оперативно-производственного планирования. Предмет исследования – Организационно-экономические отношения возникающие при внедрении системы оперативно-производственного планирования. Проведенная научная работа позволила разработать методический инструментарий к внедрению систем оперативно-производственного планирования и к оценке уровня готовности предприятия, включающий оценку бизнес-процессов предприятия, определение текущего уровня готовности предприятия к внедрению систем оперативно производственного планирования расчет эффектов от внедрения, алгоритм выбора системы оперативно-производственного планирования и дорожную карту ее внедрения, позволяет принять эффективное управленческое решение по внедрению систем оперативно-производственного планирования. / The relevance of research. In a market that orients each manufacturer and entrepreneur to a high end result, planning acquires new functions at Russian enterprises. Planning is aimed not only at ensuring the production of competitive products, but also at promoting full employment of resources, equitable income distribution and improved quality of life. Production planning is one of the main directions of production management. Its main feature is that the formation of tasks planned by the production unit is strictly related to the organization of their implementation. The relevance of this topic lies in the fact that in order to produce products at the exact time with fluctuations in demand, it is necessary to improve planning at the enterprise. The purpose is to develop methodological tools for the implementation of operational and production planning systems and for assessing the level of readiness of the enterprise. Research objectives: - to study the strategic planning tools used in an industrial enterprise when implementing an operational and production planning system; - to explore the experience of implementing operational and production planning at the enterprise, the effect of implementation; - to develop methodological tools for assessing the level of readiness of the enterprise for the implementation of operational and production planning systems. The object of the study is industrial enterprises implementing an operational and production planning system. The subject of the study is the organizational and economic relations that arise during the implementation of the operational and production planning system. The scientific work carried out made it possible to develop methodological tools for the implementation of operational production planning systems and for assessing the level of readiness of the enterprise, including an assessment of the business processes of the enterprise, determining the current level of readiness of the enterprise for the implementation of operational production planning systems, calculating the effects of implementation, an algorithm for selecting an operational production planning system and a roadmap for its implementation, allows you to take effective management decision on the implementation of operational and production planning systems.

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