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雷志坚 《机械工人(冷加工)》2003,(8):33-34
由于高低压配电屏的生产具有随机定货,每批品种多、批量少、交货时间紧、产品更新速度快的特点,所以最适合应用FMS智能控制系统进行生产。 FMS系统即柔性制造系统,它是在计算机控制下,由一个自动化的物料输送系统将若干台数控 相似文献
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多品种跨批量企业生产具有产品品种繁多、工艺复杂、产量多变等特点,缺乏拉动式准时生产的条件,在生产过程中容易存在半成品大量积压、产品生产周期过长等问题。针对这一问题,介绍一种不同于拉动式生产的工位物料的准时配送方法,利用混合布局方式,结合几个精益配送技术模块,提出了多品种跨批量企业的精益生产物料配送模型,使生产时的原材料和半成品在工位间高效流转,缩短产品生产周期,提高生产效率。 相似文献
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由于高低压配电屏的生产具有随机定货,每批品种多,批量少,交货时间紧、产品更新速度快的特点,所以最适合应用FMS智能控制制统进行生产. 相似文献
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确定最优生产周期和生产时间,降低库存系统总成本,是企业库存管理的核心内容之一.在经典EPQ模型基础上,考虑延期交货及丢单损失,建立了相应的生产库存模型.数学分析及参数的灵敏度分析显示,延期交货系数对库存系统各项成本有不同程度的影响,是实际生产库存决策必须控制的重要因素. 相似文献
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确定最优生产周期和生产时间,降低库存系统总成本,是企业库存管理的核心内容之一。在经典EPQ模型基础上,考虑延期交货及丢单损失,建立了相应的生产库存模型。数学分析及参数的灵敏度分析显示,延期交货系数对库存系统各项成本有不同程度的影响,是实际生产库存决策必须控制的重要因素。 相似文献
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有限元分析技术在注塑机拉杆结构分析中的应用 总被引:2,自引:0,他引:2
拉杆是注塑机提供合模力的重要构件。这里用有限元法对拉杆进行了有限元分析,并对拉杆的关键部位进行了材料力学测试,表明拉杆螺纹处的应力集中现象比较明显,并在此部位容易形成裂纹。测试和计算结果可为注塑机拉杆结构的改进设计提供参考。 相似文献
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广西汽配行业ASP服务平台拉动单管理系统的研究 总被引:1,自引:1,他引:0
针对采用JIT生产方式的主机厂要求配套厂送货及时,以及配套厂拉动单管理不科学的现状,提出了拉动单管理系统的模型结构,对功能模块进行划分,并设计实现了拉动单管理系统,较好地解决了主机厂与配套厂数据对接问题。 相似文献
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针对采用JIT生产方式的主机厂要求配套厂送货及时,以及配套厂拉动单管理不科学的现状,提出了拉动单管理系统的模型结构,对功能模块进行划分,并设计实现了拉动单管理系统,较好地解决了主机厂与配套厂数据对接问题。 相似文献
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Integrated Production Model in Agile Manufacturing Systems 总被引:1,自引:0,他引:1
H.-H. Huang 《The International Journal of Advanced Manufacturing Technology》2002,20(7):515-525
To reach the goals of quick response to customers’ needs and increasing the flexibility of producing goods, we integrate "push"
and "pull" production models, which are the most popular production systems nowadays, for controlling automated manufacturing
systems. This integrated production model can best be applied in an agile manufacturing environment. Push systems, involving
MRP calculations, are the basis of distributing materials to the plant. Pull systems the so-called just-in-time (JIT) systems,
produce products that exactly meet customers requirements. By introducing the concept of the theory of constraints (TOC) and
optimised production technology (OPT), the integrated production model is made possible. Optimised production technology,
based on the theory of constraints is the most important theory for manipulating constraint resources in a production line
employing both the push and pull concepts. By merging these two fundamental principles, an integrated push and pull production
paradigm is developed.
This work aims at finding a production model for manufacturers to apply in continuously and unanticipated changing competitive
environments.
ID="A1" Correspondence and offprint requests to: Dr H.-H. Huang, Department of Industrial Management, National Pintung University of Science and Technology, 1 Hseuh-Fu Road,
Nei-Pu Hsiang, Pingtung 91201, Taiwan. E-mail: hhuang@mail.npust.edu.tw 相似文献
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《Measurement》2014
This paper proposes a new technique for estimating phasors during the transient phenomena in the electrical power systems. Unlike traditional Phasor Measurement Units (PMUs) that estimates phasors at process level, the proposed technique estimates phasors at bay level. The estimation technique relies on a robust recursive Kalman–Filtering, which is employed for computing the phasors based on the time-critical IEC 61850-9-2 Sampled Measured Values casted by the substation Merging Units (MUs). Many evolution tests of the proposed technique have been carried out for both stationary and transient phenomena in power systems to determine the accuracy of the measurements obtained at various conditions. The proposed estimator can produce phasors at bay level with reporting rate of 100 frames per second, which is encouraged in IEEE Std C37.118 and can satisfy higher accuracies than provided by the traditional Phasor Measurement Units, which are 0.01 degree and 0.01% for phase and magnitude, respectively. 相似文献
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基于机械系统动力学分析软件ADAMS建立了干船坞气控卧倒门系统的动力学仿真模型,利用该模型对坞门的运动学和动力学进行了仿真,实现了在计算机上仿真分析干船坞坞门的动态特性,为干船坞坞门设计提供了一套有效的分析方法.仿真结果与试验结果非常接近,表明仿真结果已达到较高精度. 相似文献