基于消费者感性需求的产品材质意象评价方法

针对产品开发过程中的材质设计问题,以感性工学为理论基础,将消费者对产品材质的感性认知量化,构建产品材质意象评价方法。基于模糊层次分析法建立产品方案材质与感性意象之间的层次分析图,提取产品材质风格意象词汇,根据消费者需求将感性意象词汇作为评价准则,建立模糊层次矩阵,进行评价。通过护眼台灯的材质评价实例,证明该方法更贴近消费者的主观意象。     

基于序次Logistic回归的产品意象造型设计研究

为设计出符合消费者感性需求的产品,提出基于序次Logistic回归的产品意象造型设计方法.首先,应用KJ法和因子分析法确定产品的感性意象,使用形态分析法确定造型设计要素,在此基础上由正交试验设计法构建产品全轮廓卡片,对其感性意象进行调查.其次,通过对感性意象评价等级分布的分析,选择Probit函数作为序次Logistic回归的联接函数,建立感性意象与设计要素之间的数学模型.最后,通过测试验证了模型的有效性.文中结合办公座椅的设计进行研究,结果表明该方法是正确可行的.     

基于情感需求的老年健身车造型设计研究

为挖掘老年用户对健身产品造型设计要素的情感需求,以健身车为例,运用感性工学理论和因子分析法,提取符合老年用户情感需求的感性意象特征和健身车造型设计要素,并应用数量化理论I类构建老年健身车造型设计要素与感性意象的关联模型,辅助产品意象造型设计。最后通过组合方案的可信度评估,验证该方法的可行性。     

基于椭圆傅里叶的产品外形意象设计

针对当前产品外形意象设计研究在形态描述、关键感性意象定位及感性意象拟合模型构建等方面存在的问题与不足,提出一种基于椭圆傅里叶分析的产品外形意象设计研究方法。该方法通过对经图像处理得到的样本外形轮廓进行椭圆傅里叶分析,提取到包含外形信息的椭圆傅里叶主成分数据,对数据进行相关分析和回归分析,构建出感性意象综合评分模型和主成分评价模型。采用总体样本的感性意象综合评分模型确定关键感性意象项目及其重要性排序,以此明确外形设计目标,再以个体方案的主成分评价模型评价并指导创意外形方案的优化。以汽车侧面外形意象设计的应用研究为例,进一步验证了方法的可行性和有效性。     

基于KE和AHP理论的汽车造型意象评价方法研究

为解决汽车设计过程中造型特征获取和设计完成后汽车造型意象认知二者之间的匹配问题,辅助设计师通过造型意象评价对设计方案进行合理选择,提出了一种基于感性工学和层次分析法的汽车造型意象评价方法。以汽车设计中的车型、品牌和风格特征要素建立造型特征集,通过感性工学理论实现造型意象词汇的量化,以确定语义特征集,运用层次分析法建立造型特征集与语义特征集之间的关系,从而构建影响造型意象评价的指标体系,建立模糊评价矩阵,计算各评价指标权重并进行综合排序;最终对设计方案进行模糊综合评价,获得最佳造型意象设计方案。将该评价方法应用于3款电动汽车造型设计方案评价中,运用模糊隶属度函数,建立模糊评价矩阵,并对各个指标的评价结果进行量化处理,筛选得出最佳造型意象设计方案,为项目开发提供了有效参考。     

基于感性工学的产品材质意象研究

产品材质的感性意象是用户借助意象形容词对材质的表示。准确把握用户对产品的材质意象可帮助设计师把握用户心理,设计出具有更好使用体验的产品。以手表带设计为例,通过对其材质的调查分析,以感性工学为理论依据,建立样本空间和语义空间,运用层次分析与模糊评价相结合的方法,构建材质意象决策模型,量化用户对材质的感性认知并对模型求解。通过验证,该方法实用、有效,为产品设计中材质选择提供有效方法。     

感性工学的产品材质CAID系统研究

以消费者对产品材料的质感意象为依据,探讨材料质感与消费者心理意象的对应关系;采用感性工学(Kensei engineering)方法,实现视觉和触觉的感觉数量化,并通过实验和实验结果统计分析,构建材质感性意象空间数据库;以Top-Down的方法建立了映射树模型,并构建了符合消费者感性诉求和设计师设计行为习惯的产品材料计算机辅助工业设计(CAID)系统,从而实现了材质设计的人性化.     

基于混合感性工学模型的产品色彩设计方法

为进一步完善现有产品色彩感性设计的流程,提出一种基于混合感性工学模型的产品色彩感性设计方法.以智能蓝牙音箱为例,通过提取目标产品的感性意象信息与色彩设计样本,建立面向产品色彩设计的正向感性工学模型,明确感性意象与色彩样本的映射关系,进行方案设计;运用眼动追踪技术与灰色关联分析,建立面向色彩方案评估的逆向感性工学模型,进行产品色彩方案主客观评价,获得优选配色方案,再次验证该模型的可行性.结果 表明:在产品色彩设计中引入混合感性工学,有利于改进产品色彩设计的思路,保障设计程序的严谨性;而眼动试验与灰色理论的结合,有助于实现基于用户感性需求的产品色彩方案优选,为产品色彩感性设计提供参考.     

基于基因表达式编程的产品材质意象决策支持模型

为解决客户对产品客制化的需求,提出基于基因表达式编程的产品材质意象决策方法。运用语意差异法提取用户的意象,用多维等级分析法挑选认知样本,并数量化一类建立意象与语意映射,应用基因表达式编程建立了意象与材质关系模型。测试结果表明,基因表达式编程建立的关系模型能够更好地解决产品材质意象决策问题,具有较好的预测效果和较强的稳定性。     

基于形状混合的产品意象造型设计方法

为满足消费者对产品的感性需求,提出基于形状混合的产品意象造型设计方法。以数码相机为研究对象,运用SD法确定产品的感性意象,通过形态分析法构建感性词汇与产品特征要素之间的关联;提取数码相机关键特征元素的曲线,运用基于特征的形状混合方法实现典型样本的造型过渡,生成一系列相互融合的造型,为设计师提供产品意象造型设计的可能性方案;对设计方案进行感性意象评价,验证了方法的可行性。     

Minimal Realization of Linear Graph Models for Multi-physics Systems

An engineering system may consist of several different types of components,belonging to such physical"domains"as mechanical,electrical,fluid,and thermal.It is t...     

Quantum Cooperative Robotics and Autonomy

The intersection of Quantum Technologies and Robotics Autonomy is explored in the present paper.The two areas are brought together in establishing an interdisci...     

On the Relation of Load to Average Gap in the Contact Between Surfaces with Longitudinal Roughness

A computer simulation model for the contact between longitudinally-oriented rough surfaces has been formulated. This model closely duplicates the actual surf ace contact deformation behavior by taking into account the elastic interactions between the asperities. There were no assumptions made about the shapes, or any deformation behavior of the asperities, except for their obeying the laws of elasticity. The plastic deformations on the high asperity peaks were taken into account by setting a ceiling on their contact pressures at the material hardness value. The simulations used real surface profiles which were digitized from unworn circumferentially ground steel surfaces. Each pair of these profiles was mathematically combined to form an equivalent rough profile pressing against an infinitely rigid flat and having the appropriately adjusted elastic modulus. A total of 28 different pairs of profiles were used in the simulations. Each contacting pair was subjected to 30 different load levels and the local contact pressures and deformations were calculated. The contact simulations yielded some important mathematical relationships between parameters, such as the real area of contact, average gap, and average asperity load through statistical curve fitting. Two analytical functions were generated to relate the average load to average gap and the real area of contact to load.     

三绕组变压器的双绕组等效建模及在Matpower中的应用

针对实际电网存在着大量的三绕组变压器,但国际上一些著名商业软件,如BPA仿真软件、Matpower这一权威潮流计算开源软件,均只提供双绕组变压器模型,限制了其在具有三绕组变压器的电力系统中的应用的问题,潮流计算是自主开发的电力系统各种应用软件的核心模块,因此依托国际权威开源程序进行二次开发,是一种较好的选择。对Matpower要求的数据格式进行了归纳,对变压器的一般的等值电路及带理想变压器的等值电路和带标幺值的等值电路进行了分析研究,提出了三绕组变压器转换为双绕组等效模型的建模方法,使得原先只适应双绕组变压器的潮流计算软件可以适用于三绕组变压器电网的潮流计算;最后以Matpower软件为例进行了案例计算,并用PSASP仿真软件进行对比验证。研究结果证明,所提出的建模方法是有效的。     

电站锅炉模糊风险评价方法研究与应用

针对电站锅炉风险等级评价问题,将模糊综合评价技术应用到电站锅炉风险等级评价中。开展了电站锅炉失效影响因素及模糊评价因素的重要程度分析,建立了一套科学合理适于在线评价的电站锅炉风险评价体系,提出了模糊综合评价技术与改进的模糊层次分析法相结合的模糊风险评价方法,利用改进的模糊层次分析法计算了指标体系中各层指标权重。对某一台电站锅炉的实际运行工况影响子因素进行了模糊风险评价,采用模糊合成算子进行模糊综合运算得到电了站锅炉运行工况影响子因素的评价向量。研究结果表明:电站锅炉的运行工况影响子因素的风险评价等级为第6级,失效可能性等级为小,该电站锅炉运行工况良好。     

考虑进油孔有限长滑动轴承油膜力的近似解析解

针对具有进油孔的有限长滑动轴承油膜力求解问题,采用变分原理和分离变量法,求得了有限长滑动轴承油膜压力分布的近似解析表达式。将油膜压力分布的近似解析表达式在油膜存在区域上进行积分,即得到了油膜力。将提出的计算有限长滑动轴承油膜力方法与无限长轴承模型、有限元方法的计算结果进行了比较,发现了提出的方法与有限元方法的计算结果很接近。最后,研究了进油孔位置和进油压力对油膜存在区域、油膜力等的影响,研究结果表明进油孔位置和进油压力对油膜存在区域和油膜力有较大的影响。     

Fifth International Summer School on Screw-Theory Based Methods in Robotics

正3-11 September,2014University of Bologna,Bologna,Italy www.summerscrews.org summerscrews2014.ing.unibo.it SUMMER 20SCREWS 14In 2014,our screw-theory school comes to the world's oldest university.In early September,Summer Screws'14 will gather six experts in the application of screw theory in robotics and up to 40 participants at the University of Bologna,Bologna,Italy.The school will teach attendees how to apply existing methods and empower them to develop new ones in their own research.The basic theoretical notions will be introduced in a rigorous manner,emphasizing examples,applications,and exercises.Scholarships are available.     

INTEGRAL EQUATION METHOD＇S APPLICATION IN HOLE-EDGE STRESS OF COMPOSITE MATERIAL PLATE WITH DIFFERENT SHAPED HOLES

The strength of composite plate with different hole-shapes is always one of the most important but complicated issues in the application of the composite material. The holes will lead to mutations and discontinuity to the structure. So the hole-edge stress concentration is always a serious phenomenon. And the phenomenon makes the structure strength decrease very quickly to form dangerous weak points. Most partial damage begins from these weak points. According to the complex variable functions theory, the accurate boundary condition of composite plate with different hole-shapes is founded by conformal mapping method to settle the boundary condition problem of complex hole-shapes. Composite plate with commonly hole-shapes in engineering is studied by several complex variable stress fimction. The boundary integral equations are founded based on exact boundary conditions. Then the exact hole-edge stress analytic solution of composite plate with rectangle holes and wing manholes is resolved. Both of offset axis loadings and its influences on the stress concentration coefficient of the hole-edge are discussed. And comparisons of different loads along various offset axis on the hole-edge stress distribution of orthotropic plate with rectangle hole or wing manhole are made. It can be concluded that hole-edge with continuous variable curvatures might help to decrease the stress concentration coefficient; and smaller angle of outer load and fiber can decrease the stress peak value.     

交通荷载作用下桥梁结构参数识别方法

应用动力节点加载法,将作用在桥梁上的交通荷载转化为等效节点荷载,再用两步构造法识别结构物理参数.第1步,用Newmark-β方法变换结构运动方程,并用结构的加速度响应求得变换空间内的位移、速度和加速度响应;第2步,基于最小二乘原理,构造出变换空间内求解结构参数的递推式,进行结构物理参数识别.数值模拟结果表明,在交通荷载作用下,该方法能够快速、准确地进行桥梁结构参数识别.     

INDUSTRIAL ENGINEERING AND VISUALISATION-A PRODUCT DEVELOPMENT PERSPECTIVE

Taking the actual project of teaching and researching process for example, the relationship between the industrial engineering and product development is discussed. And use the novel visualization technology to support the industrial engineering and product development. How to use the new computer modeling and simulating technologies to support the product development and industrial engineering, is introduced especially. The support includes both domestic products and industrial systems. The visualization and computer technologies take a very important role in some system or multi-direction modeling, those technologies mentioned above can help the industrial engineers study the effect of design on the whole life circle, including the producing steps. So the engineers can avoid making the wrong decision which may cause bad effects on the whole industrial engineering.