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基于FBS的产品创新设计模型 总被引:3,自引:0,他引:3
FBS(Funciton-Behavior-State)模型被用于描述设计的认知过程,它分为功能,行为和状态三个层次,各层次之间都可通过关系描述相互联系。文中提出了一个基于FBS的计算机辅助产品创新设计模型,描述了运用该模型进行创新设计的过程,其中结合了类比推理的结构设计方法。 相似文献
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概念设计产品功能信息模型的研究 总被引:2,自引:0,他引:2
概念设计阶段的的主要活动是围绕产品功能展开的,在总结现有的功能定义和功能表示方法的基础上,提出了以EXPRESS语言描述的概念设计产品功能信息模型,此模型具有广泛的适用性,可支持不同设计学派的概念设计活动,为计算机辅助概念设计系统的实现提供了信息模型基础。 相似文献
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为实现产品原理方案向结构化布局映射,提出产品布局元层次关系网及产品布局多色模型.首先在布局模块及其属性关系网的基础上构建布局元层次关系网;然后应用多色集合的个人颜色、统一颜色,给出产品布局元层次关系网的数学描述,形成产品布局多色模型,并提出推理算法;再利用个人颜色、统一颜色之间的围道布尔矩阵推理原理,进行产品结构布局设计过程中功能—运动分配—布局模块之间映射过程的形式化描述.应用该模型进行结构化布局设计,可有效地支持产品结构布局设计的公理化;最后在Pro/E平台中利用VC.net 2003工具进行二次开发,并以数控机床结构布局设计为例验证了文中模型和设计方法的可行性和有效性. 相似文献
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公理化设计与DFA集成的产品信息模型 总被引:7,自引:2,他引:7
在公理化设计理论的基础上,讨论了产品设计过程中功能要求的分解以及从功能域向结构域的曲折映射过程;建立了产品功能一结构层次模型和面向装配设计的产品信息模型.该产品信息模型不仅能够描述产品的层次结构信息,而且能够描述零部件之间的装配关系信息,能够实现CAD/CAE/CAPP/CAM的信息集成,为产品并行开发过程的信息集成打下良好的基础.以发动机减速器为例,对产品的功能树、结构树以及装配模型和装配关联矩阵的形成进行了说明。 相似文献
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系统建模是嵌入式系统设计的关键步骤,其好坏直接影响着设计的质量和产品的上市时间。已有多种建模方案,但每种都有其局限性。本文提出一种由5层模型组成的嵌入式系统设计的模型框架。它能够从需求描述开始,建立CDM功能模型,经一致性验证,满足设计要求后映射到SystemC抽象模型上。利用SystemC的硬件描述特征和仿真库,增加设计细节,分层细化模型并进行验证,最后达到软硬件的协同设计和综合实现的目的。 相似文献
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Aiming at the deficiencies of analysis capacity from different levels and fuzzy treating method in product function modeling of conceptual design,the theory of quotient space and universal triple I fuzzy reasoning method are introduced,and then the function modeling algorithm based on the universal triple I fuzzy reasoning method is proposed.Firstly,the product function granular model based on the quotient space theory is built,with its function granular representation and computing rules defined at the same time.Secondly,in order to quickly achieve function granular model from function requirement,the function modeling method based on universal triple I fuzzy reasoning is put forward.Within the fuzzy reasoning of universal triple I method,the small-distance-activating method is proposed as the kernel of fuzzy reasoning;how to change function requirements to fuzzy ones,fuzzy computing methods,and strategy of fuzzy reasoning are respectively investigated as well;the function modeling algorithm based on the universal triple I fuzzy reasoning method is achieved.Lastly,the validity of the function granular model and function modeling algorithm is validated.Through our method,the reasonable function granular model can be quickly achieved from function requirements,and the fuzzy character of conceptual design can be well handled,which greatly improves conceptual design. 相似文献
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The classification of customer requirements (CRs) has a significant impact on the solution of product design. Existing CRs classification methods such as the Kano model and IPA model are time-consuming and inaccurate. This paper proposes a CRs classification method for product design using big data of online customer reviews of products to classify CRs accurately and efficiently. Comments of customer reviews are matched to CRs using a hierarchical semantic similarity method. Customer satisfaction degrees are defined based on emotional levels of adjectives and adverbs of customer comments using word vectors. The function implementation degree of each product is determined by specifications crawled from online products. Fitting curves are formed by defined customer satisfaction and function implementation of CRs using polynomial modeling and least square methods. Based on the slope of the fitted curves, CRs are classified to provide the minimum and maximum function implementations of CRs in each CR group to guide a product design process. The proposed method is applied in a case study of defining CRs classifications for design of upper limb rehabilitation devices. For verifying the proposed method, CRs defined by the existing methods are compared with CRs from the proposed method in design of an upper limb rehabilitation device. 相似文献
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功能分析是概念设计过程中最重要的阶段,对现有机械产品概念设计理论及方法进行了分析,提出了基于Pe试网的机电一体化产品功能分解模型.对机电一体化产品概念设计中的功能分解过程进行分析,通过基本元素和动态行为机制的定义,建立产品功能分解单元模型.以喷墨打印机为例,建立了该产品的功能分解单元模型,验证了模型的可行性. 相似文献
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Quality function deployment (QFD) is a product development process performed to maximize customer satisfaction. In the QFD, the design requirements (DRs) affecting the product performance are primarily identified, and product performance is improved to optimize customer needs (CNs). For product development, determining the fulfillment levels of design requirements (DRs) is crucial during QFD optimization. However, in real world applications, the values of DRs are often discrete instead of continuous. To the best of our knowledge, there is no mixed integer linear programming (MILP) model in which the discrete DRs values are considered. Therefore, in this paper, a new QFD optimization approach combining MILP model and Kano model is suggested to acquire the optimized solution from a limited number of alternative DRs, the values of which can be discrete. The proposed model can be used not only to optimize the product development but also in other applications of QFD such as quality management, planning, design, engineering and decision-making, on the condition that DR values are discrete. Additionally, the problem of lack of solutions in integer and linear programming in the QFD optimization is overcome. Finally, the model is illustrated through an example. 相似文献
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基于功能分析的分布式BIT设计 总被引:1,自引:0,他引:1
基于功能分析的分布式BIT设计方法是针对在产品设计初期,测试性定性及定量要求不明确,与测试性设计相关的可靠性、维修性数据缺乏提出的.这种方法的核心是通过分析产品功能,确定产品故障模式与测试方法,进而建立测试性模型,得出最优的测试性设计.为了验证所提出的方法,以具体工程应用为实例,对设计的过程做出了详细介绍. 相似文献
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基于目标函数的模糊模型一体化建模 总被引:1,自引:0,他引:1
基于模糊集合的模糊模型, 利用模糊推理规则描述复杂、病态、非线性系统是一种有效方法. 本文提出了利用目标函数确定非线性系统的结构和参数的方法. 首先, 通过Gustafson-Kessel(GK)模糊聚类确定模型结构. 然后, 通过目标函数与参数估计一起进行递推计算, 进而实现对模糊模型结构简化, 删除冗余规则. 结构确定过程中采用了UD矩阵分解方法, 大大降低了计算量. 仿真结果证明了提出方法的有效性. 相似文献