复杂混流生产线车间规划研究

发布时间：2018-04-03 03:18

本文选题：复杂　切入点：混流生产线车间系统　出处：《五邑大学》2012年硕士论文

【摘要】：从20世纪70年代开始,随着市场开始从卖方市场向买方市场开始转变,大批量、单品种的生产方式也开始变向多品种、小批量的生产方式转化。我国是一个制造业大国,混流生产线车间在我国制造业车间比较具有代表性。混流生产线车间系统的规划问题是一个企业重要的开局部分,对一个复杂混流生产线车问系统的规划研究有着十分实际的意义。本文主要是探讨一种解决混流生产线车间系统的规划问题的方法。首先,运用复杂系统的理论对混流生产线车间系统进行分析,可以知道混流生产线车间系统具有结构复杂性、组成单元复杂性、交互环节复杂性和行为复杂性。混流生产线车间系统具有复杂适应系统的聚集、非线性、流、多样性四大特征和标识、内部模型、积木块三大机制,而混流生产线车间系统是一个不断与外界进行能量交换的开放系统,是一个复杂适应系统。对于复杂适应系统的理论和研究方法我们都可以对混流生产线车间系统规划问题进行应用。其次,引入遗传算法对传统的系统布局规划方法(SLP)进行流程改进。由原来设备具体面积关系修改为设定一个约束范围,运用物流关系来代替。这样就避免了原来SLP方案中绘制作业单位位置相关图和面积相关图时需不断的手工调整和修正这一流程,使得SLP更加快捷有效；同时还降低了由人的主观因素带来的影响。再次,在遗传算法应用到SLP流程中,通过增加一层编码层(工艺—单元)来进行约束,使得设备、单元、工艺三者集成考虑,系统性更加合理,运算更加快捷。最后,通过基于遗传算法和SLP相结合的规划方法进行实例分析,与单独使用遗传算法的规划方法进行结果比较,可以看出不仅改善了流程、减少了运行时间而且规划目标更加接近公司要求；与单独使用传统的SLP方法(公司原来用的方案)进行结果比较,可以看出物流成本降低50%左右,在过程中避免了原来SLP方案中绘制作业单位位置相关图和面积相关图时需不断的手工调整和修正这一流程,有效降低了人的主观因素带来的影响,非常符合公司日标规划需求。相关数值实验表明本文提出的解决混流生产线车问系统的规划问题的方法—基于遗传算法和SLP相结合的方法能够更加有效地使全局物流费用得以降低,提高了设计质量,简化了设计步骤,取得了满意的效果。具有一定的实际应用价值和推广意义。
[Abstract]:Since 1970s, as the market began to change from the seller's market to the buyer's market, the mode of production of large quantity and single variety began to change to multi-variety and small-batch mode of production.China is a large manufacturing country, the mixed production line workshop in our manufacturing workshop is more representative.The planning of hybrid production line workshop system is an important starting part of an enterprise, which has a very practical significance for the planning research of a complex mixed production line vehicle system.This paper mainly discusses a method to solve the planning problem of mixed flow production line workshop system.Firstly, the theory of complex system is used to analyze the hybrid production line workshop system. It can be known that the hybrid production line workshop system has structural complexity, component unit complexity, interaction complexity and behavior complexity.The workshop system of mixed-flow production line has four characteristics of complex adaptive system, such as aggregation, nonlinearity, flow and diversity, internal model and building block.The hybrid production line workshop system is an open system for energy exchange with the outside world and is a complex adaptive system.For the theory and research method of complex adaptive system, we can apply to the problem of workshop system planning of mixed flow production line.Secondly, genetic algorithm is introduced to improve the traditional system layout planning method (SLP).Change from original equipment specific area relation to set a restriction range, use logistics relation to replace.This avoids the need for manual adjustment and correction of the original SLP scheme when drawing the job unit position correlation and area correlation maps, which makes the SLP more efficient and efficient, and reduces the influence of human subjective factors.Thirdly, when genetic algorithm is applied to SLP process, a layer of coding layer (process-unit) is added to constrain, so that the integration of equipment, unit and process is considered, and the system is more reasonable and the operation is faster.Finally, through the case analysis based on the combination of genetic algorithm and SLP, compared with the planning method using genetic algorithm alone, we can see that not only improved the process,The running time is reduced and the planning goal is closer to the requirements of the company. Compared with the results of the traditional SLP method used by the company alone, we can see that the logistics cost is reduced by about 50%.In the process, it avoids the need of manual adjustment and correction of the original SLP scheme to draw the job unit position correlation map and the area correlation map, which effectively reduces the impact of human subjective factors and meets the needs of the company's daily standard planning.The related numerical experiments show that the method proposed in this paper, which is based on genetic algorithm and SLP, can effectively reduce the global logistics cost and improve the design quality.The design steps are simplified and satisfactory results are obtained.It has certain practical application value and popularization significance.
【学位授予单位】：五邑大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH181

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