基于约束理论的车间计划排产系统应用研究

发布时间：2018-06-29 06:52

本文选题：约束理论 + DBR　；参考：《华中科技大学》2014年硕士论文

【摘要】：随着时代的不断发展，生产制造系统日趋规模化、复杂化、集成化和协同化，市场需求变化越来越频繁和难以预测，企业之间的竞争日益激烈，如何制订合理的生产计划，从而提高生产系统的柔性以及时响应变化多端的市场需求是关系到制造企业生存与发展的关键性问题。传统的ERP系统的计划模式建立于无限能力基础之上，计划结果常常不能直接用于生产现场，需要计划员按照经验进行调整之后再下发至车间，效率低、准确性差且难以调整。APS系统则基于车间所有资源有限能力的基础，通过制订符合实际情况的排产策略，自动生成优化的、精确的工序级车间生产计划，并且计划调整方便快捷。本文针对工程机械行业品种多、批量小、生产周期长、市场需求变化极快等特点，探索应用基于约束理论的APS系统来为企业制订详细、精确和灵活的工序级车间生产计划，验证了以瓶颈为核心的DBR排产模式。同时，分析了DBR排产模式实施应用的要点，并针对该策略应用实施过程中可能遇到的实际问题，提出了利用系统仿真技术来进行瓶颈识别和参数优化的方案。此外，本文在某工程机械企业进行了基于约束理论的APS系统初步应用，根据企业的实际情况建立了车间排产模型，并利用智能对象仿真软件Simio对模型参数进行优化，最终实现了基于DBR的优化排产。通过对优化过程中不同方案的排程结果进行对比，验证了DBR排产模式的优越性以及系统仿真技术在具体实施过程中良好的辅助功能。
[Abstract]:With the development of the times, the production and manufacturing system is becoming more and more large-scale, complicated, integrated and coordinated, the market demand changes more and more frequently and difficult to predict, the competition between enterprises is increasingly fierce, how to make reasonable production plan, To improve the flexibility of production system to respond to the changing market demand is a key problem related to the survival and development of manufacturing enterprises. The planning model of traditional ERP system is based on unlimited capacity, and the planning results can not be directly used in the production site. It needs the planner to adjust the experience and then send it to the workshop, which is inefficient. On the basis of the limited capacity of all the resources in the workshop, the APS system with poor accuracy and difficulty to adjust can automatically generate the optimized and accurate production plan of the workshop by making the production scheduling strategy according to the actual situation, and the planning adjustment is convenient and quick. In view of the characteristics of construction machinery industry, such as variety, small batch, long production cycle and rapid change of market demand, this paper explores the application of APS system based on constraint theory to make detailed, accurate and flexible production plan for enterprise. The DBR scheduling model with bottleneck as the core was verified. At the same time, the main points of the implementation of DBR scheduling mode are analyzed, and aiming at the practical problems that may be encountered in the implementation of the strategy, a scheme of bottleneck identification and parameter optimization using system simulation technology is proposed. In addition, the APS system based on constraint theory is applied in a construction machinery enterprise. According to the actual situation of the enterprise, the workshop scheduling model is established, and the model parameters are optimized by using the intelligent object simulation software Simio. Finally, the optimization of production scheduling based on DBR is realized. By comparing the scheduling results of different schemes in the optimization process, the superiority of DBR scheduling mode and the good auxiliary function of the system simulation technology in the process of implementation are verified.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TB497

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