基于Flexsim的W公司涡旋空压机生产仿真研究

发布时间：2018-03-11 18:00

本文选题：ExpertFit拟合　切入点：Petri网建模　出处：《南昌大学》2012年硕士论文　论文类型：学位论文

【摘要】：随着计算机技术的发展,建模与仿真越来越多的被应用到优化领域之中。Flexsim建模与仿真也已成为解决由高度离散的事件组成的系统的优化问题的重要工具。本文以W公司涡旋空压机生产系统为研究对象,对其加工工艺流程进行了分析；同时,应用新的数据拟合工具ExpertFit对现场搜集的数据进行了分析拟合,得到了Flexsim代码；然后,采用Petri网对系统的各加工单元进行了建模,经初步分析,了解了系统之中的顺序与冲突事件；最后,在Petri网模型和ExpertFit拟合结果的基础上,建立了Flexsim二维与三维模型,通过仿真与结果分析,发现了w公司生产系统中存在的不足与瓶颈：操作员平均工时空闲率很高、三坐标检测处存在严重的瓶颈。针对分析得到的生产系统的不足与瓶颈,本文通过修改原有模型,建立了Flexsim实验器,并分别以操作员数目和三坐标台数为控制变量,进行了仿真实验；同时,辅以恰当的绩效指标对实验的结果进行了评价：最后,得到了最优化的资源配置方案,即操作员数目减少为3个,设置4台三坐标。通过改进,在W公司涡旋空压机的产量基本保持不变的情况下,操作员的平均工时空闲率由71.6%降至45.1%,三坐标检测处暂存区中临时实体的平均等待时间由原来的5459s降至723s；在消除瓶颈的同时,也大幅度地节省了公司的直接人工成本。本文采用Petri网建模与Flexsim仿真相结合的方法对离散系统进行建模分析与改进,取得了良好的效果,为企业合理配置资源和类似的研究提供了一种思路。
[Abstract]:With the development of computer technology, modeling and simulation are more and more used in the field of optimization. Flexsim modeling and simulation has become an important tool to solve the problem of system optimization composed of highly discrete events. Taking the vortex air compressor production system of W Company as the research object, this paper analyzes the processing process of the vortex air compressor, and uses a new data fitting tool, ExpertFit, to analyze and fit the data collected in the field and get the Flexsim code. The processing units of the system are modeled by Petri net, and the sequence and conflict events in the system are understood by preliminary analysis. Finally, based on the Petri net model and ExpertFit fitting results, the two-dimensional and three-dimensional Flexsim models are established. Through simulation and analysis of the results, the shortcomings and bottlenecks in the production system of w company are found: the average idle rate of operator is very high, and there is a serious bottleneck in the 3D coordinate detection. Aiming at the shortage and bottleneck of the production system, this paper establishes the Flexsim experimenter by modifying the original model, and takes the operator number and the 3-coordinate table number as the control variables respectively, and carries on the simulation experiment, at the same time, The experimental results are evaluated with appropriate performance indicators. Finally, the optimal resource allocation scheme is obtained, that is, the number of operators is reduced to 3, and four sets of three coordinates are set. Through improvement, under the condition that the output of the vortex air compressor of W company remains basically unchanged, The average man-hour idle rate of the operator is reduced from 71.6% to 45.1 and the average waiting time of the temporary entity in the temporary storage area of the three-coordinate detecting place is reduced from 5459s to 723s. The bottleneck is eliminated and the direct labor cost of the company is greatly saved. In this paper, the method of Petri net modeling and Flexsim simulation is used to model and improve the discrete system, and good results are obtained, which provides a way of thinking for enterprises to allocate resources reasonably and similar research.
【学位授予单位】：南昌大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TP391.9;TH45

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