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51.
A contribution to the development of strategic control and planning instruments: An acquisition case study 总被引:1,自引:0,他引:1
A. Chevalier P. L. Kunsch J. P. Brans 《International Transactions in Operational Research》2004,11(2):155-168
The present paper is part of the efforts made by the authors in recent years to develop strategic control and planning instruments in corporations using OR‐techniques like system dynamics, control theory, and group multicriteria decision aid. A more general framework called ‘adaptive control methodology’ (ACM) combines all these techniques. It has been presented in several papers. The objective of the present analysis is to calibrate this instrument and to tune it to the corporate needs by analysing real‐world applications. More specifically, several case studies have been investigated in large multinational organisations in the food sector. An acquisition case has been used for the calibration purpose. It is analysed in the paper from the ACM perspective to provide additional material for revisiting and improving the methodology. 相似文献
52.
Fabrication process of open surfaces by robotic fibre placement 总被引:3,自引:2,他引:3
Composite materials are being used extensively in many industrial sectors. They offer excellent material properties compared to other structural materials available. However, the traditional fabrication process using manual hand lay-up is time consuming and labour intensive. Therefore, robotic fibre placement has been introduced to overcome these drawbacks. This approach may greatly reduce cycle time and manufacturing costs. This paper describes the overall strategy for the establishment of a flexible robotic fibre placement technique. The fabrication process planning of this new technique is presented. Three different types of fibre placement for open surfaces are discussed. These include simulation-based fibre path generation, fibre steering, and sensory-based contour following methodologies. The system architecture for the process control is also presented. 相似文献
53.
怒江水电基地的电力市场研究 总被引:1,自引:0,他引:1
怒江中下游干流河段落差集中 ,水量大 ,淹没损失小 ,交通方便 ,施工条件好 ,地质条件良好。规划装机容量2 13 2 0MW ,是我国重要的水电基地之一。到 2 0 2 0年 ,澜沧江中下游、金沙江中下游以及广西水电、四川水电、贵州水电基本得到大规模的开发 ;怒江将可能成为南方电网 ,乃至华中电网电力电量平衡的必不可少的电源。怒江水电基地是南方电网长远能源平衡的战略基地 ,“西电东送”的后续基地。怒江供电区域市场空间较大 ,送到受电地区的落地电价也具备一定的竞争力 相似文献
54.
Chul Kim Chul Woo Park 《The International Journal of Advanced Manufacturing Technology》2006,29(5-6):459-474
This paper deals with an automated computer-aided process planning and die design system by which the designer can determine
operation sequences even if they have little experience in process planning and die design for axisymmetric products. An attempt
is made to link programs incorporating a number of expert design rules with the process variables obtained by commercial FEM
softwares, DEFORM and ANSYS, to form a useful package. The system is composed of four main modules. The process planning and
the die design modules consider several factors, such as the complexities of preform geometry, punch and die profiles, specifications
of available multi-former, and the availability of standard parts. They can provide a flexible process based on either the
reduction in the number of forming sequences by combining the possible two processes in sequence, or the reduction of deviation
of the distribution on the level of the required forming loads by controlling the forming ratios. In the die design module
optimal design technique and the horizontal split of the die insert were investigated for determining appropriate dimensions
of components of the multi-former die set. It is suggested that the proposed method can be beneficial for improving the tool
life of the die set in practice. 相似文献
55.
L. H. S. Luong T. Spedding 《The International Journal of Advanced Manufacturing Technology》1995,10(6):411-415
The process planning function plays a critical role not only in computer integrated manufacture, but also in the economics of batch manufacturing. This paper describes the development of a generic knowledge-based system for process planning and cost estimation in the hole making process. The main function of the system, besides estimating the cost of production, is to recommend appropriate processes, their sequence and their respective machining conditions in order to obtain the required product specifications. The system has been implemented in a manufacturing organisation. The results obtained have indicated that in addition to cost savings the system also preserves the consistency in planning and cost estimation. 相似文献
56.
增强蚁群算法的机器人最优路径规划 总被引:2,自引:0,他引:2
为解决复杂环境中机器人最优路径规划问题,本文结合增强学习和人工势场法的原理,提出一种基于增强势场优化的机器人路径规划方法,引入增强学习思想对人工势场法进行自适应路径规划.再把该规划结果作为先验知识,对蚁群算法进行初始化,提高了蚁群算法的优化效率,同时克服了传统人工势场法的局部极小问题.仿真实验结果表明,该方法在复杂环境中,对机器人的路径规划效果令人满意. 相似文献
57.
58.
利用均匀设计试验进行混凝土配合比优化 总被引:2,自引:0,他引:2
提出了混凝土配合比试验的均匀设计方法,采用逐步回归法对试验数据进行回归拟合,以经济成本为目标函数,利用目标规划的方法进行混凝土配合比优化. 相似文献
59.
一种障碍环境下机器人路径规划的蚁群粒子群算法 总被引:5,自引:3,他引:5
针对机器人在障碍环境下寻找最优路径问题, 提出了一种障碍环境下机器人路径规划的蚁群粒子群算法.该方法有效地结合了粒子群算法和蚁群算法的优点, 采用栅格法进行环境建模, 利用粒子群算法的快速简洁等特点得到蚁群算法初始信息素分布, 以减少迭代次数, 加快算法的收敛速度; 同时利用蚁群算法之间的可并行性, 采用分布式技术实现蚂蚁之间的并行搜索, 求解精度高等优点, 求精确解. 仿真实验结果证明了该方法的有效性, 是机器人路径规划的一种较好的方法. 相似文献
60.
李明翠 《数字社区&智能家居》2009,(14)
随着Web服务的发展,Web服务组合越来越显示出其必要性。文章分析了语义Web服务组合的特点,着重阐述了基于AI规划的语义Web服务组合方案。 相似文献