共查询到17条相似文献,搜索用时 218 毫秒
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针对传统的基于结构的产品配置方法中,零部件之间约束关系表达能力较弱的问题,将基于规则的方法和基于结构的方法相结合,给出了一种基于广义产品结构的产品配置模型和配置求解方法。该模型采用基于结构的方法描述配置知识的结构信息,采用基于规则的方法描述配置约束信息,增强了对配置约束的描述能力。配置求解方法中,提出了配置推理图的概念,并基于先根遍历访问模型中的节点,采用数据驱动的深度优先图搜索策略求解每个节点的配置约束,提高了配置求解能力。最后通过一个应用示例,给出了基于该产品配置模型的配置求解工作过程。 相似文献
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基于条件约束满足问题的产品配置研究 总被引:14,自引:0,他引:14
强大灵活的配置模型和高效的求解策略是实现复杂产品配置的基础。为了构建复杂产品的配置模型,提出了一种基于条件约束满足问题框架的配置建模方法,该方法利用配置变量和配置约束来统一表达配置模型中的产品模型和用户需求,从而使配置模型具有表达一致性;配置变量分为类型变量、属性变量、接口变量、基数变量四种类型;配制约束包含依赖约束和活动约束两种类型;在构建统一形式配置模型的基础上,采用一种模型分解策略进行求解。最后采用一个汽车产品实例说明配制建模和配置求解过程。 相似文献
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面向融合有形产品与无形服务的完整产品总体设计方案开发,提出了基于通用物料清单表达的完整产品变量化配置模型.分析了完整产品及其总体方案配置设计的内涵与概念,建立了基于通用物料清单的完整产品结构表达.利用质量功能配置方法实现了客户需求向完整产品结构的映射,在成本与设计约束下,优化了总体设计方案的产品规格与模块性能定位.给出了方案配置的多约束定义,基于变量化配置,建立了层次化完整产品总体方案配置设计模型.最后给出了水平定向钻机完整产品总体设计方案的配置实例,并验证了所提方法的可行性. 相似文献
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为提高产品应用服务系统的构建效率和服务设计的复用性能,提出可配置的产品应用服务构件模型及其配置实现机制.首先,给出了产品应用服务服务要素及其相瓦关系的描述,针对应用服务构成要素的特点,提出可配置的产品应用服务构件模型;然后,根据产品应用服务构件模趔中的特征变量、接口变量、属性变量和约束关系的特点,提出了产品应用服务构件模型的广义动态约束满足转换的概念,通过变量集和约束集对构件模型进行描述,并采用双层组合启发式求解算法实现构件性能的综合最优化,生成一簇具有较高复用价值和复用性能的产品应用服务构件.最后通过实例,验证了所提模型的实用性和有效性. 相似文献
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基于特征辨识的物料清单转换技术研究 总被引:3,自引:0,他引:3
为有效保证在企业信息集成过程中物料清单视图之间数据的完整性、正确性和一致性,提出了一种基于特征辨识的物料清单转换方法.通过引入工艺物料清单以及定义“继承部件”、“虚设部件”、“中间部件”、“外协部件”和“外购部件”的含义及其相关映射函数,建立了物料清单转换的映射模型,设计了对应不同部件类型的物料清单转换规则,给出了设计物料清单向制造物料清单转换的算法,并针对企业出现的工程更改问题,给出了物料清单转换对工程更改的处理规则,实现了从设计物料清单到制造物料清单的自动转换.最后,通过实际应用,验证了该转换技术的有效性和可行性. 相似文献
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通过增加点的工艺路线属性和弧的物料属性 ,扩展了产品结构赋权有向图模型。研究了基于扩展产品结构赋权有向图模型进行工艺设计的方法与技术 ,包括工艺路线分配、加工工艺设计、装配工艺设计等。最后给出应用实例 相似文献
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为了更好地满足消费者的个性化需求,快速准确地完成在线产品和服务的混合配置,提出一种基于产品和服务多维混合约束的产品配置过程模型。该模型通过设置消费者对产品和服务的价格敏感系数,在产品零部件配置约束、服务配置约束以及产品与服务关联配置约束的共同作用下,以消费者效用和厂商利润最大化为目标,构建产品和服务的混合配置过程模型,并利用算法对该模型进行求解,从而得到在不同的价格敏感程度影响下的产品配置方案。以某汽车厂商的在线客户化定制过程为案例对模型进行应用和求解,得出针对不同敏感程度的消费者的产品配置方案,验证了该配置方法的实用性与可行性。 相似文献
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Zhang Jinsong Wang Qifu Wan Li Zhong Yifang 《The International Journal of Advanced Manufacturing Technology》2005,25(1-2):41-52
In made-to-order (MTO) manufacturing enterprises (ME), product architectures are usually modularised and components standardised. Product configuration is a key technology for order realisation in MTO–ME and is a typical knowledge-based application. Through a configuration process, product modules or components are selected and assembled according to customer requirements. Product configuration relates to a great deal of knowledge that represents complexity relations among components or modules, such as configuration rules and assembly constraints. Traditional product modelling techniques are focused mainly on physical product modelling and geometric representation, which makes them insufficient to help in the product configuration process. This paper discusses configuration-oriented product modelling and knowledge management for MTO–ME. A general process of product configuration modelling is proposed. The configuration model represents a product family from which a specific configuration solution or product variant can be derived. Actually, configuration modelling is a process which captures and represents product knowledge. In this paper, product knowledge is organised and managed through a knowledge component (KCOM) that includes configuration rules and constraints. A KCOM-based product knowledge representation model is presented. Finally, a PDM system is extended to support product modelling and knowledge management for MTO configurable products . 相似文献
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Jianxin Jiao Lianfeng Zhang Kannan Prasanna 《International Journal of Flexible Manufacturing Systems》2004,16(4):335-361
Mass customization strategies could be usefully deployed by companies whose products are characterized by a modular design.
Typically, each module serves a specific aspect of the overall product function at varying performance levels. Each product
variant (constructed through a unique combination of modular performance levels), therefore, serves to customize the overall
performance of the product, thus serving the unique needs of each customer. The high demand for each module guarantees economies
of scale and, eventually, low cost to customer. The rationale of configuring production processes for producing individual
product variants originates from the fact that massive process data is commonly available in a firm and there exists a generic
process structure underlying the production of similar products in a family. To design a decision support mechanism that constructs
process configuration corresponding to a given product configuration, this paper develops a formal modeling of process variety
using Petri nets. Object-oriented Petri nets (PNs) with changeable structures (OPNs-CS) are applied to deal with the issues
of generic representation, constraints compliance, and operational sequence requirements. Object-oriented PN (OPN) models
facilitate generic representation of product and process variety as well as their instantiations. The OPNs-CS model is tested
with simulation. Based on simulation results, the optimal configuration of production processes can be determined for each
individual product as well as the cohort of a product family. To illustrate the feasibility and potential of OPNs-CS based
process variety modeling, a case study of process configuration for mass customized textile spindles is reported. 相似文献