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论述了模糊神经网络的概念及特点,在此基础上提出了基于模糊神经网络的决策支持模型,还介绍了其运行计算的过程与方法,并通过农机选型配套的决策支持实例验证模型,说明模型对复杂的决策问题具有简单方便及快速准确做出反应的优点。 相似文献
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为适应模具企业新的生产方式,本文提出了一种结合合同网协议、GPGP协同机制和TAEMS任务描述语言的任务分配和调度方法,并建立层/级结构的整体框架和各级调度策略.该方法从整体的角度分析问题,提高了调度结果的一致性和优化性.初步的验证表明该方法是有效的. 相似文献
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为了快速响应扰动事件,恢复生产稳定,创新性地提出了多类型扰动事件本体与车间生产调度案例本体智能匹配技术。通过引入本体技术(ontology technology),将以往生产动态调度的成功案例进行规范化和标准化处理,构建动态调度本体化的成功案例库和案例库自我完善的学习机制。结合案例推理(case-based reasoning,CBR)技术及相似度理论,将新扰动的生产车间调度问题与案例库的成功案例进行匹配,依据相似度所在阈值区间,实现扰动车间智能调度辅助决策,从而达到提高决策过程时效性,缩短决策时间的目的。通过仿真结果表明:与传统CBR及混合驱动调度策略相比,在本体-CBR的方法下比传统CBR的案例检索精度大约提高了6%,比混合驱动调度策略相比,在决策时间上要快25 min,故有效地提高了案例检索的精度与响应时间。 相似文献
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SUN Rong-lei XIONG You-lun DU Run-sheng DING HanSchool of Mechanical Science Engineering Huazhong University of Science Technology Wuhan P. R. China 《国际设备工程与管理》2002,7(2)
Based on the concept of operation flexibility, we study the relationship amongmultiple operation sequences and provide a flexibility measure for operation sequences. Acriterion is proposed to prioritize each operation (rather than sequence). Under the multi-agentarchitecture the criterion can be used to guide the decision-making procedure during produc-tion scheduling so that there is an adequate flexibility at each decision point. Experimentalresults demonstrate the efficiency of the criterion when it is used as a scheduling heuristic.It can increase flexibility of manufacturing systems, and consequently improve the per-formance of the systems. 相似文献
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一类灰色模糊决策问题的熵权分析方法 总被引:2,自引:0,他引:2
以灰色系统理论和模糊数学为基础,探讨了不确定型决策问题的特性,分析了一些相关成果中所给方法在直接处理灰色模糊数方面的优势与不足。运用优化理论和熵极大化准则,建立了基于灰色模糊关系的多属性群体决策方法,分别对属性权重向量已知和未知两种情况给出了简便实用的算法,通过算例说明了算法的合理性。 相似文献
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This paper presents a new weighted fuzzy multi-objective model to integrated supplier selection, order quantity allocation and customer order scheduling problem to prepare a responsive and order-oriented supply chain in a make-to-order manufacturing system. Total cost and quality of purchased parts as well as the reliability of on-time delivery of customer orders are regarded as the objectives of the model. On the other hand, flexible suppliers can contribute to the responsiveness and flexibility of entire supply chain in the face of uncertain customer orders. Therefore, a mathematical measure is developed for evaluating the volume flexibility of suppliers and is considered as the other objective of the model. Furthermore, by considering the effect of interdependencies between the selection criteria and to handle inconsistent and uncertain judgments, a fuzzy analytic network process method is used to identify top suppliers and consider as the last objective. In order to optimise these objectives, the decision-maker needs to decide from which supplier to purchase parts needed to assemble the customer orders, how to allocate the demand for parts between the selected suppliers, and how to schedule the customer orders for assembled products over the planning time horizon. Numerical examples are presented and computational analysis is reported. 相似文献
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混合型生产方式中动态调度问题的研究 总被引:2,自引:0,他引:2
讨论了介于按库存制造和按定单装配之间的混合型生产方式的车间层生产动态调度问题,探讨了调度过程中的信息及其处理。对实际企业生产计划的控制过程进行分析后,归纳出“虚拟发装”的概念,并将其作为一种动态调度方案。最后应用信息技术,实现虚拟发装的工段动态调度,以达到提高决策的透明度,增强生产管理信息系统的实施效用的目的。 相似文献
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基于约束理论的造纸企业生产排程方法研究 总被引:1,自引:0,他引:1
针对造纸企业集中制浆、多机台分散造纸的生产模式,以浆纸平衡的抄纸系统加工方案为切入点,提出了一种生产排程模型.为了克服传统遗传算法早熟和收敛慢的特点,采用小生境遗传算法求解模型.实例表明,该方法求解造纸企业的排程问题效果好,有实用价值. 相似文献
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工程移民决策支持研究 总被引:3,自引:0,他引:3
工程移民指工程建设引起的非自愿的搬迁安置活动,工程移民决策包括规划决策和管理决策,这在国内外都是一个新课题,基于GIS的工程移民DSS是实施科学决策的有效手段,章对工程移民决策支持的理论、方法进行了探讨,并结合万家寨工程移民决策支持进行了试验。 相似文献
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模糊灰色物元空间(FHW)理论与实践——宏观复杂大系统决策方法 总被引:7,自引:0,他引:7
模糊灰色物元空间(FHW)是针对宏观复杂大系统中的决策、预测问题进行决策支持的理论方法。它以Delphi法和模糊综合评判为基础,融合了BS和K.J法的优点,综合了模糊数学、灰色系统、物元分析与可拓学等多种理论,以此理论为基础的决策支持系统已经在实际应用中取得了大量的成果。经过近20年的发展,这套理论方法在综合人工智能、复杂系统、集合论等其他学科的基础上,自身也有了长足的发展与进步。简要介绍了模糊、灰色、物元空间理论的理论体系、实际应用情况和近年来的发展和展望。 相似文献
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一种流程型企业主生产计划优化方法研究 总被引:4,自引:0,他引:4
为了解决传统的流程型生产管理方法不适应现代市场需求的问题,提出了一种基于生产柔性提高的主生产计划优化方法.建立了流程型企业的产品需求与生产能力平衡的最优化模型,讨论了模型的求解方法--混合启发式算法.经研究表明,该方法在流程型生产管理理论和实践方面具有一定的参考意义. 相似文献
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利用应用效果较好的均值-半偏差投资组合模型对存在融资情况的投资组合进行分析研究。将存在融资情况的均值-半偏差模型的收益和风险目标进行模糊化,并构造了使用较多且效果佳的线性隶属度函数μmax(x)和μmin(x)。运用模糊决策理论引进变量μ将模糊环境下存在融资的双目标模型转化为线性的基于模糊决策存在融资的投资组合模型。本模型不仅简化了模型的计算量,同时也将投资者的主观投资意愿表示清楚。最后通过实例说明了模型的实用性和有效性。 相似文献
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Jaideep Ghosh 《国际生产研究杂志》2013,51(10):2900-2914
This paper provides a simulation model for scheduling service task operations and distributing related human resources in dispersed work centres. The managerial concern for the minimisation of temporal overhead costs of task operations in the face of fluctuating, short-term service demands is examined under restrictions imposed by resource availability, work hour flexibility and task-backlog fulfilment. Scheduling strategies are developed directly from the constrained reduction of temporal overheads of appointment and release operations in distributed, non-interlinked work centres. To ensure the model’s structural validity, simulated task backlogs are adjusted to the actual backlog-reducing procedures in real applications. The model provides means for setting up balanced work schedules that can greatly lower temporal overheads of appointment and release operations if workers are selected in accordance with compatible time availability and task qualifications. Direct comparisons of worker productivities in the different centres can also be made, allowing managers to locate bottleneck points of service operations when productivity falls short of desired expectations. The robustness of the model is ensured by finding significant parameter domains through Monte Carlo simulations, centred on data points collected from real-time demand functions in actual service operations. 相似文献
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产品配置中相似实例模糊优选法的研究 总被引:14,自引:0,他引:14
分析了传统BOM在产品种类剧增的大规模定制竞争环境下的缺陷,阐明了面向产品族的创成式BOM(Generic Bill-of-material,GBOM)的概念。研究了GBOM的面向对象表达方法以及基于GBOM的产品配置过程,提出采用模糊优选法解决配置过程中相似实例的提取问题,并给出基本算法和实例验证,最后讨论了GBOM树中零部件类节点相似实例提取中的关键问题及解决方法。 相似文献
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CAOYan ZHAORu-jia 《国际设备工程与管理》2004,9(3):164-169
In the paper, the gap between theoretical research and practical applications of workshop scheduling is analyzed. According to practical application requirements, the traditional Petri net is expanded and a Rule-restrained Colored Petri Net(RCPN) is put forward to model workshop activities. Then, the architecture of the workshop scheduling system based on RCPN is presented. Finally, the scheduling system that adopts a 3-layer B/S/D mode is developed on the Internet/Intranet by using the Web database and lava. 相似文献