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设计柔性制造系统(FMS)仿真教学模型所考虑的主要原则应是使构成FMS的仿真模型贴近现代企业的生产实际。通过柔性制造系统的仿真教学模型的设计分析,介绍设计时所遇到的几个关键问题,说明柔性制造系统仿真教学模型的开发策略。 相似文献
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介绍了基于Matlab/GUIDE的柔性制造系统优化配置仿真方法.该方法运用方便,可根据系统的加工任务快速确定零件组及对应的加工单元,并根据最大加工效率,确定加工单元的设备布局,为系统提供必要的决策依据. 相似文献
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针对航空发动机柔性制造单元,利用Plant Simulation仿真软件建立了制造单元设备模型,使用实际数据设置参数,分析制造单元布局、产量、设备利用率和缓存库位等生产信息。实际仿真结果表明,单元布局得到了合理优化,产量可达到优化前的2倍,模型能够准确分析出各制造单元是否存在瓶颈工序,同时分析缓存库位,给出库位需求。此外,运用D-H法建立机器人运动模型,对制造单元内机器人的几何运动开展路径优化和干涉分析等虚拟运动仿真,并建立人体模型及动作设置,开展了人机工程分析。上述仿真优化实际应用到航空用环形件柔性制造系统关键环节的设计中,缩短了航空柔性制造系统工程设计研发周期、降低成本、减小建设及生产安全风险。 相似文献
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现代制造技术的现状和发展之后,从我国技术和经济均薄弱的实际出发,着重介绍准柔性制造系统的特点,组成、基本技术和在我国的应用前景。为我国发展柔性制造技术提出参考意见。 相似文献
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采用假定的工件工艺文件和机床作业调度文件作为仿真程序运行的原始数据,通过运行仿真程序得到仿真结果,对运行过程中的生产物流数据进行分析、结果进行记录。从单台设备的运行状态和多设备运行时动作的协调性方面对仿真运行结果进行了分析,验证了柔性制造系统中的生产物流系统模型和仿真程序设计的正确性,以及FMS物流系统规划与组织的有效性。 相似文献
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The Effects of Scheduling Rules and Routing Flexibility on the Performance of a Random Flexible Manufacturing System 总被引:1,自引:0,他引:1
Farzad Mahmoodi Charles T. Mosier John R. Morgan 《International Journal of Flexible Manufacturing Systems》1999,11(3):271-289
The increased use of flexible manufacturing systems to efficiently provide customers with diversified products has created a significant set of operational challenges for managers. Many issues concerning procedures and policies for the day-to-day operation of these systems still are unresolved. Previous studies in this area have concentrated on various problems by isolating or simplifying the systems under study. The primary objective of this study is to extend previous research by examining the effects of scheduling rules and routing flexibility on the performance of a constrained, random flexible manufacturing system (FMS). Other experimental factors considered are shop load, shop configuration, and system breakdowns. Within the bounds of this experiment, the results indicate that, in the presence of total routing flexibility, the effects of shop load, system breakdowns, and scheduling rules are significantly dampened. In particular, when total routing flexibility exists, the choice of scheduling rules is not critical. We also show that the behavior of scheduling rules in a more constrained FMS environment (i.e., where system breakdowns occur and material handling capability is limited) is consistent with the findings of previous research conducted under less constrained environments. Finally, results indicate that the shop configuration factor has little or no impact on a system's flow-time performance. 相似文献
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针对单元化制造系统存在的柔性问题,进行设备布局的仿真实验研究;提出了基于车间布局的制造系统柔性评价指标;分析了改善单元化制造系统柔性的几种布局方式。用改变设备布置为手段,通过仿真实验,总结出改善单元化制造系统柔性的有敦方法。 相似文献
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介绍了组合模型的柔性制造实验系统,它以“慧鱼”创意组合模型构建包括物流、加工和仓储等底层功能模块。该系统以计算机为监控部件,可实现数据的实时显示、工序的判断、资源的分配和方案的调度;以PLC为中间环节,实现设备与监控部件之间的数据联系。该系统的研制成功为学生提供了良好的柔性制造系统设计、构建和调试的实践平台。 相似文献
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Ling-Feng Tung Li Lin Rakesh Nagi 《International Journal of Flexible Manufacturing Systems》1999,11(4):379-409
This paper presents a hierarchical approach to scheduling flexible manufacturing systems (FMSs) that pursues multiple performance objectives and considers the process flexibility of incorporating alternative process plans and resources for the required operations. The scheduling problem is solved at two levels: the shop level and the manufacturing system level. The shop level controller employs a combined priority index developed in this research to rank shop production orders in meeting multiple scheduling objectives. To overcome dimensional complexity and keep a low level of work-in-process inventory, the shop controller first selects up to three production orders with the highest ranking as candidates and generates all possible release sequences for them, with or without multitasking. These sequences are conveyed to the manufacturing system controller, who then performs detailed scheduling of the machines in the FMS using a fixed priority heuristic for routing parts of multiple types while considering alternative process plans and resources for the operations. The FMS controller provides feedback to the shop controller with a set of suggested detailed schedules and projected order completion times. On receiving these results, the shop controller further evaluates each candidate schedule using a multiple-objective function and selects the best schedule for execution. This allows multiple performance objectives of an FMS to be achieved by the integrated hierarchical scheduling approach. 相似文献
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基于柔性生产线中立体仓库和运输小车的结构及其可视化控制的要求,设计并实现了功能强大、界面友好的控制系统。控制系统硬件主要基于西门子SIMATICs7200系列可编程逻辑控制器(programmable logic controller, PLC ),同时引入人机界面友好的触摸屏eview—MT5000;软件分别选用西门子Step7编程软件和EV5000触摸屏编程软件。控制系统经实验室模拟柔性生产线测试,结果表明设计的控制系统运行稳定可靠,实现了对立体仓库系统和运输小车的实时监视和控制。 相似文献