基于群体语义信息的顾客需求重要度确定方法

为系统化地分析顾客需求的相对重要性,提出一种利用产品规划质量屋中的竞争性信息及卡诺模型调整顾客需求基本重要度的方法。首先,利用基于语言信息的决策理论进行竞争性评价和群体语义信息集结,根据集结结果构建均方差最大化模型并设定顾客满意度改进目标,获得顾客需求的竞争性重要度和改进优先度;其次,由顾客满意度双因素分析法识别顾客需求的卡诺分类并估计卡诺因子;最后,通过竞争性重要度、改进优先度和卡诺因子三者对顾客需求基本重要度进行修正,获得顾客需求综合重要度。通过某工业除尘机的改进设计实例证明了该方法的现实性和合理性。     

面向产品规划的顾客需求获取与转换

为了准确获取顾客需求并将其转化为确切的产品技术要求,提出一种将调研数据、市场竞争环境和调研顾客的属性相结合的系统求解方式,在该求解方式中,采用改进的层次分析法(AHP)求取各顾客属性项权重,用焓方法求取各顾客需求项竞争性评估参数,进而将其与调研数据相结合得到待开发产品的顾客需求重要度和相关产品的顾客需求满意度,并将这些数据作为基础信息输入质量屋。在进行顾客需求转换的时候,以质量屋的信息为基础,充分利用开发团队的经验和竞争对手的信息确定待开发产品的顾客目标满意度,并以此建立目标规划模型,求取出技术要求目标值。     

质量功能展开中顾客需求的排序算法

研究了基于粗糙集的质量功能展开中顾客需求的排序问题.针对质量功能展开的顾客调查中需求不确定、不完备、不分明和模糊等非结构性特质,利用粗糙集中不完备信息系统的有关方法,提出了产品规划质量屋中顾客需求的确定方法.利用粗糙集中完备信息系统的多属性决策方法,确定了产品规划质量屋中上述顾客需求的基本重要度.基于卡诺模型的分析,提出了实现顾客需求竞争位次改进增量的重要性计算公式,进而确定了基本重要度的修正因子.基于顾客需求的基本重要度与其修正因子的合成,确定了顾客需求的最终重要度.最后,通过实例说明了所提方法的应用.     

产品改进的质量屋中顾客需求排序的集成方法

研究了产品改进的质量屋中顾客需求的排序问题.首先,根据企业及其竞争对手产品的竞争性评价和效用评价,建立了对应每一个顾客的顾客需求重要度优化模型.通过拉格朗日函数求解这些优化模型,确定对应于每一个顾客的顾客需求重要度,进而利用群决策的有关方法,确定了各项顾客需求的基本重要度.其次,引入实现顾客需求满意度的改进日标的重要度慨念,并通过平衡记分卡、比例标度法和层次分析法的集成,确定了实现各项顾客需求满意度的改进日标的重要度.最后,基于顾客需求的基本重要度、实现顾客需求满意度的改进目标的重要度和归一化的顾客需求"卖点"的合成,确定了产品改进的重要度,进而对产品改进中各项顾客需求进行优先排序,并以实例说明了方法的应用.     

质量屋中顾客需求最终重要度确定的集成方法

基于顾客需求的竞争性评价数据,建立了一个顾客需求基本重要度确定的优化模型,并通过拉格朗日函数来求解优化模型,以确定顾客需求的基本重要度。全面分析了顾客需求基本重要度修正因子的影响因素,并引入了顾客需求的卡诺因子、实现顾客需求满意度的改进目标所要求的总资源和总可行性等概念,进而确定了顾客需求基本重要度的修正因子。基于顾客需求的基本重要度及其修正因子的融合,确定了顾客需求的最终重要度。最后以双缸洗衣机的产品质量改进为例,说明了所提方法的应用。     

基于QFD和Kano模型的医疗服务机器人造型设计研究

为解决质量屋构建中顾客需求满意评价信息存在不确定性的问题,提出一种集成质量功能配置模型和卡诺模型的顾客需求优先级确定方法。通过获取竞争优先级确定产品规划方向;运用K-Means聚类分析法选取评价样本,基于产品的用户需求评价信息,采用竞争标杆分析与偏好稳定法量化评价信息中的满意度与不确定性,确定用户需求的相对重要度;利用Kano模型将顾客需求分类,并将Kano模型用于修正原始改进率的变换函数与顾客相对满意度相结合,确定用户需求竞争优先级。将该方法运用于医疗服务机器人的造型设计中,验证了其可行性和有效性。     

顾客需求驱动的产品服务系统模块选配方法

为以顾客满意度最大化为目标进行产品服务系统方案规划,提出了顾客需求驱动的产品服务系统模块选配方法。采用质量功能展开将顾客需求及重要度转化为产品服务系统方案模块属性及其重要度。采用三角模糊数处理不确定性的质量功能展开信息,基于相对偏好关系分析进行模糊质量功能展开计算,并对定性的候选模块属性进行量化。考虑模块属性间的非线性补偿关系,基于非准确性计算思想建立了以顾客满意度最大化为目标的0-1非线性规划模型。以装载机产品服务系统的模块选配为例,验证了所提方法的有效性。     

考虑定量KANO分析的产品功能需求优化设计

针对传统质量功能展开考虑功能需求间自相关关系不足的问题,采用模糊质量功能展开将顾客需求重要度转化成产品功能需求重要度;基于模糊DEMATEL方法分析了产品功能需求之间的相互影响关系,对初始产品功能需求重要度进行了修正。采用模糊KANO问卷分析了功能需求的类型,并根据定量KANO模型分析了产品功能需求和顾客满意度之间的函数关系。以顾客满意度最大化为优化目标,建立了产品功能需求优化模型。通过实例验证了所提方法的可行性和有效性。     

基于特征选择技术的顾客需求重要度确定方法

针对专家决策和层次分析法等方法计算顾客需求重要度具有的主观性,根据不同配置的产品服务组合方案需求属性及整体满意度数据,采用基于条件概率的特征选择技术识别关键顾客需求,计算其基本重要度,并基于规则分析需求的Kano属性用于重要度调整。顾客需求竞争性重要度分析通常基于企业间的相对比较,忽视了本企业顾客需求的实际表现,其准确性较差。结合最大偏差方法和需求的实际表现计算顾客需求的竞争性重要度,依据顾客需求的Kano属性予以调整,采用加权算术平均方法整合顾客需求基本重要度和调整后的竞争性重要度来计算最终重要度。以挖掘机产品服务组合方案开发过程中顾客需求重要度的计算为例,验证了所提方法的有效性。     

质量屋中顾客需求改进重要度的确定方法

研究基于粗糙集的产品规划质量屋中顾客需求改进重要度的确定问题.针对质量功能配置的顾客调查中需求具有不确定和模糊等特征,提出产品规划质量屋中顾客需求确定的粗糙集方法.基于粗糙集中的相对正域方法,确定顾客需求的基本重要度.对顾客需求满意度的改进比率的实现进行效率和风险分析,提出实现顾客需求满意度的改进比率的重要性概念及其计算公式.基于顾客需求的基本重要度、实现顾客需求满意度的改进比率的重要性和"顾客需求的卖点"的融合,提出一种顾客需求改进重要度的确定方法.以全自动洗衣机的产品质量改进为实例,说明所提方法的应用.     

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...     

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.     

Non-monotonic material contrast in scanning ion and scanning electron images

30 keV Ga⁺ focused ion beam induced secondary electron (iSE) imaging was used to determine the relative contrast between several materials. The iSE signal compared from C, Si, Al, Ti, Cr, Ni, Cu, Mo, Ag, and W metal layers does not decrease with an increase in target atomic number Z₂, and shows a non-monotonic relationship between contrast and Z₂. The non-monotonic relationship is attributed to periodic fluctuations of the stopping power and sputter yield inherent to the ion–solid interactions. In addition, material contrast from electron-induced secondary electron (eSE) and backscattered electron (BSE) images using scanning electron microscopy (SEM) also shows non-monotonic contrast as a function of Z₂, following the periodic behavior of the stopping power for electron–solid interactions. A comparison of the iSE and eSE results shows similar relative contrast between the metal layers, and not complementary contrast as conventionally understood. These similarities in the contrast behavior can be attributed to similarities in the periodic and non-monotonic function defined by incident particle–solid interaction theory.     

Application of Feature Extraction through Convolution Neural Networks and SVM Classifier for Robust Grading of Apples

This paper proposes a novel grading method of apples,in an automated grading device that uses convolutional neural networks to extract the size,color,texture,an...     

分布动态载荷识别的抗噪处理

针对正交多项式频域法在用多种响应对矩形薄板进行载荷识别中抗噪性较差的问题,综合运用平均法、矩阵预处理和奇异值截断法等方法对之进行改善,并引入空间映射的思想,将该方法的应用范围拓展为复杂的模型.利用仿真算例,证实了该方法具有较好的抗噪性.     

基于MELTAC-N平台的核电厂安全级DCS环网研究与测试

针对工程实践中环网通讯相关问题的处理缺乏理论基础及国产化安全级DCS平台的开发缺乏成熟经验借鉴问题,对基于MELTAC-N平台核电厂安全级DCS环网的软硬件实现进行了研究。提出了安全级DCS环网双环网冗余设计、光切换开关设计等硬件设计方法,以及以RPR协议为基础,采用全数据收发策略的软件设计方法。在CPR1000安全级DCS平台上对安全级DCS环网的可靠性及实时性进行了评价,并进行了容错能力、响应时间及响应时间稳定性测试验证实验。结果表明,基于MELTAC-N平台安全级DCS环网软硬件设计具有较好的容错能力及响应时间稳定性。     

The laboratory simulation of abrasive wear

Abrasive wear has long been recognised as one of the most potentially serious tribological problems facing the operators of many types of plant and machinery; several industrial surveys have indicated that wear by abrasion can be responsible for more than 50% of unscheduled machine and plant stoppages. Locating the operating point of a tribological contact in an appropriate operational ‚map’︁ can provide a useful guide to the likely nature and origins of the surface degradation experienced in use, though care must be exercised in choosing the most suitable parameters for the axes of the plot. Laboratory testing of materials and simulations of machine contacts are carried out for a number of purposes; at one level for the very practical aims of ranking candidate materials or surface hardening treatments in order of their wear resistance, or in an attempt to predict wear lives under field conditions. More fundamentally, tests may be aimed at elucidating the essential physical mechanisms of surface damage and loss, with the longer term aim of building an analytical and predictive model of the wear process itself. In many cases, component surface damage is brought about by the ingress of hard, particulate matter into machine bearing or sealing clearances. These may be running dry although, more usually, a lubricant or service fluid is present at the interface. A number of standardised wear test geometries and procedures have been established for both two- and three-body wear situations, and these are briefly described. Although abrasive wear is often modelled as following an ‚Archard’︁ equation (i.e. a linear increase in material loss with both load and time, and an inverse dependence on specimen hardness) both industrial experience and laboratory tests of particularly lubricated contacts show that this is not always the case: increasing the hardness differential in an abrasively contaminated lubricated pair may not always reduce the rate of damage to the harder surface.     

Short-Term Relay Quality Prediction Algorithm Based on Long and Short-Term Memory

The fraction defective of semi-finished products is predicted to optimize the process of relay production lines, by which production quality and productivity ar...     

End-to-End Multiview Gesture Recognition for Autonomous Car Parking System

The use of hand gestures can be the most intuitive human-machine interaction medium.The early approaches for hand gesture recognition used device-based methods....     

Limits of topographic measurement by the scanning tunnelling and atomic force microscopes

Parameters describing the topographic character of a surface (height, surface wavelength, slope and curvature) can be derived from equivalent sinusoidal profiles. The response of a surface-measuring instrument may be modelled in terms of instrument parameters such as stylus radius, and scanning range and resolution. The performance of the instrument may then be mapped as a zone in amplitude-wavelength (AW) space to show the sinusoidal profiles it is capable of measuring. In a first-order analysis the STM and AFM are considered as equivalent to contact-stylus instruments with a notional stylus radius equal to the tip radius plus the gap. Comparisons between different instruments and types of instrument are readily made by mapping in AW space. The error arising from convolution of the sinusoidal profile with that of the finite tip may be quantified and plotted as contours in AW space.