首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 62 毫秒
1.
提出一种顾客需求驱动的产品配置优化方法.该方法针对现有产品族模型用于配置设计中存在的问题,构造了支持产品配置的设计空间,并运用联合分析方法将顾客期望分解为各产品特性的质量效用.在此基础上,同时考虑大批量定制产品的质量效用和成本,以“效费比”最大为目标,建立了产品优化配置数学模型,并采用遗传算法对其进行求解,从而达到了顾客满意度和成本之间的平衡——最优配置方案.以笔记本电脑的优化配置为例,证明了所提出的优化配置方法可为获取顾客满意的最优配置方案提供行之有效的途径.  相似文献   

2.
面向产品族规划的核心平台数学描述及确定方法   总被引:6,自引:0,他引:6  
提出了解决在面向产品族开发中核心平台 (面向产品族规划时的核心部件 )的定量确定和分析方法。通过分析面向产品族的用户需求和基于功能的产品开发过程 ,应用质量功能配置 (quality functional deployment)矩阵进行关系映射 ,利用数学描述模型完成定量化表示 ,实现功能和实体部件层次的关联表达 ,给出了确定和分析核心平台的方法。提出的理论模型适用于面向产品族规划的新产品开发和老产品整理中核心平台的确定和分析问题 ,对于企业扩展产品频谱以更好适应市场需求具有重要的指导意义。  相似文献   

3.
产品族设计是大批量定制设计的关键和核心。分析了模糊聚类分析方法在产品族设计中的应用。按照公理设计理论将产品开发过程划分为需求、功能和结构三个状态空间,依次讨论了聚类分析方法在区分顾客共性需求与个性需求、识别平台元素与非平台元素、划分核心模块与个性模块方面的具体应用。  相似文献   

4.
基于多色集合理论的概念设计形式化解决方法   总被引:2,自引:2,他引:2  
应用多色集合理论的个人颜色、统一颜色和递阶结构树建立了产品的概念设计递阶结构信息模型,分析了概念设计产品信息模型中的三类约束关系,并用统一颜色和元素个人颜色之间的的模块布尔矩阵对这些约束关系进行了形式化描述.提出了产品概念设计推理过程的形式化方法,实现了从产品功能需求到方案元表示的可行方案的推理过程,并把推理结果提供给下层设计进行优选和评估.最后,以隔振系统的概念设计为例验证了该方法.研究结果表明,该方法可以快速地对产品概念设计进行信息建模,为知识创新提供了一个全新的思路。  相似文献   

5.
以多目标决策理论为基础,提出了一种顾客多目标需求的整体偏好结构模型.该模型反映了顾客满意度水平,能同时获得该满意度水平的人数以及相应目标值等方面的信息,能比较好地描述和集结被考察顾客群体的偏好结构,为CIMS环境下产品的质量设计和质量功能配置提供支持,对模型的性质进行了分析,并用实例对模型的应用进行了阐述  相似文献   

6.
汽车底盘模块化设计中客户需求层次分析模型研究   总被引:2,自引:1,他引:1  
文章在研究汽车底盘模块化设计系统框架的基础上,对底盘系统进行功能划分,拟定底盘模块设计的系列型谱,研究底盘产品的客户需求层次分析模型,并对产品功能与结构的映射关系及产品子功能相关性分析、计算方法进行探讨。  相似文献   

7.
用变型指标确定动态用户需求对产品重新设计的影响   总被引:1,自引:0,他引:1  
针对目前在产品族设计中缺乏对动态变化的用户需求进行分析及响应的情况,提出用变型指标(VI—Variety Index)这一概念来确定动态用户需求对产品重新设计的影响。对QFD(Quality Function Deployment)方法进行了扩展,构造了系列产品的质量屋,将动态的用户需求与工程指标进行映射,并反映到部件的重新设计上,从而对变型指标进行了定量计算,得出基于动态用户需求的产品族设计中,部件对动态需求变化的敏感度。  相似文献   

8.
介绍了产品概念设计过程中功能设计和功能→结构映射的方法,对功能描述、功能定义库的建立、功能→结构映射的策略及其实现等技术问题进行了探讨,并以夹具设计为对象,对所述方法进行了论证。  相似文献   

9.
通过对集群制造系统结构特点的分析,提出了基于产品技术分割和技术模块价值选择的开放式模块化产品设计方法.该方法运用结构映射这一基于技术的功能和基于设计结构矩阵的技术单元聚类,实现了合理的产品技术分割;通过基于量化设计结构矩阵的技术结果关联分析和技术控制力评价实现了科学的技术模块选择;进而形成了面向集群制造的开放式产品模块化设计方法.最后以我国沿海注塑机企业集群为例,阐述了面向集群制造的开放式产品模块化方法的应用.  相似文献   

10.
为了实现设计重用,提出了一种面向复杂结构零件的初始化设计知识模型构建方法.采用功能特征分解对复杂结构零件进行了从功能到其映射结构的逐层解析,构建了功能结构设计矩阵,研究了各级功能结构的设计流程规划方法.以特征分解树为框架,研究了面向对象的表示方法对各级功能结构设计支撑知识的模块化封装,最终实现了初始化设计知识模型的构建.应用结果表明,在汽车发动机气缸体设计知识模型的构建中,该方法可有效地实现对其设计知识的条理性重用.  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

13.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

14.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

15.
In the 19th century the society was controlled by men, and women were just appendants of them, they had not any rights and freedom. But Jane was an exception, she showed some characteristics of early feminist. Jane showed her characteristics of feminism in three aspects: rebellion, equality, and independence. These characteristics were helpful to her success, and feminism is the only way out for women of that time.  相似文献   

16.
正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-  相似文献   

17.
We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-  相似文献   

18.
正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that  相似文献   

19.
For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the  相似文献   

20.
Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号