硕士学位毕业论文

硕士研究生：饶晓松

指导教师：沈斌 教授 

答辩时间：2013.06

摘要

随着世界经济的发展，单纯依靠新产品创新已不能保证企业能持续获利，而必须通过集聚成本优势、加快资金流转及精简自身组织，来应对快速的市场变化。要在市场竞争中占据优势，制造企业必须从内部物流系统着手，在一定的管理理论指导下，通过梳理物流流程、改善物流路径、提高设备利用率等方式围绕物流系统来进行改善。

本文针对内部物流系统优化问题，将精益思想和约束理论相结合，对价值流图析技术进行了改进，并利用仿真软件对方案模型进行仿真结果分析，提供决策支持。选择典型案例，结合其内部物流的实际情况进行了价值流图析技术与物流系统仿真的实践应用。本文的主要研究内容如下：

首先，论文对国内外内部物流系统优化问题的研究与应用现状进行了综述，并就约束条件下内部物流系统优化问题进行了分析，对现有解决该类优化问题适用的理论方法进行了分析与总结，为后文多约束条件下内部物流系统优化问题模型的建立与解决方法的研究奠定了理论基础。

其次，构建了多约束条件下工厂内部物流循环取货系统优化问题模型。该模型就物流系统中主要约束进行了探讨，并分析了解决该问题模型的主要切入点以及研究思路。

然后，根据该优化问题模型对物流流程分析的需求，对价值流图析技术进行了物流领域的扩展；同时结合约束理论，提出了在多约束条件下内部物流优化决策模型，通过对该问题模型的总结与分析，确定了影响决策的各方约束因素，并引入了仿真分析方法，以提供所需的数据支持。

最后，结合S厂某项目实例进行了物流-价值流图析法的应用及优化方案的物流系统仿真，结合优化方案仿真结果进行了分析。

关键词：精益思想，价值流图析，约束理论，循环取货，物流系统仿真

 ABSTRACT

With the improvement of the world economy, companies cannot guarantee continued profit relying solely on new product innovation, and must gather cost advantages, accelerate cash flow and streamline their organizations to respond quickly to market changes. To take advantage of competition in the market, manufacturers must start from within the logistics system, under the guidance of some management theory, by combing logistics processes, improve logistics path, and improve equipment utilization and other ways to improve the logistics system around.

In this paper, the internal logistics system optimization, lean thinking and theory of constraints by combining the value stream mapping technique has been improved, and the use of simulation software program model simulation results analysis, decision support. Select the typical case, combined with the actual situation of its internal logistics were practical application value stream mapping technology and logistics system simulation. The main contents are as follows:

First, the paper abroad internal logistics system optimization and application of research questions were reviewed and discussed the internal logistics system under the conditions of constraint optimization problems were analyzed, the optimization of existing solutions such issues apply theoretical methods were analyzed and summary, for the study of problems and solutions to establish internal logistics system optimization model under multiple constraints later laid a theoretical foundation.

Second, build a multi-plant logistics constraints pickup loop system optimization models. The model is the main constraint on the logistics system are discussed and analyzed to solve the problem of the main entry point for the model and research ideas.

Then, according to the needs of the logistics process optimization model for the analysis of value stream mapping technique extends the field of logistics; combined constraint theory, proposed in the multi-constraint optimization of internal logistics decision-making model, the model of the problem by summary and analysis to determine the factors that influence the decision of the parties to the constraint, and the introduction of simulation analysis method to provide the necessary data to support.

Finally, some examples of projects carried S factory logistics - logistics system value stream mapping method applied simulation and optimization solutions, combined with optimization simulation results are analyzed.

Key words: Lean Thinking, Value Stream Mapping, TOC, Milk-run, Logistics System Simulation