Intelligent Kano classification of product features based on customer reviews

Product features can be classified into different categories based on customer opinions. The rapid development of artificial intelligence and machine learning paves the way toward computational analysis of customer reviews for opinion mining. This paper presents an Intelligent Kano framework to extract, quantify, and classify different product features based on customer reviews. The framework is enabled by a novel integration of multiple artificial intelligence and machine learning techniques such as sentiment analysis and anomaly detection. A case study is conducted to validate the framework’s effectiveness. Over 12,000 customer reviews on two coffee machines are analyzed for the classification.     

无浮标式自动排渣放水器的设计

现有浮标式自动排渣放水器在使用过程中,煤渣含量较高时,自动排渣放水器内部为多相混合介质,影响浮标动作,严重时会使自动排渣放水器失效。针对所存在的问题,设计了一种无浮标式自动排渣放水器。对这一自动排渣放水器的结构和工作原理进行了介绍,对自动排渣放水器状态和移动容器受力进行了分析,并进行了试验验证。     

一体化波导阵面天线的分层结构设计

为解决一体化波导阵面天线内部结构复杂的问题,并控制成本,设计了一体化波导阵面天线的分层结构。应用Creo三维设计软件构建数字化模型,以单体模型为基础得到完整的阵面天线,并基于软件的可视化功能进行分层结构设计。在设计中,选取结构关键点作为分割面,将整体分割为易加工的零件,使一体化波导阵面天线易于制造。     

快递分拣机器人控制系统的设计

为提高快递分拣效率,设计了一种基于OpenMV机器视觉模块的快递分拣机器人控制系统。在这一控制系统中,通过机器视觉技术实现快递件的轮廓识别、定位、扫码及分类,将STM32单片机作为运动控制核心,外接传感器感知机器人的状态,基于串口与机器视觉模块双向通信,实现对放置在地面的快递件进行自动分拣。通过制作样机验证了设计的合理性与可行性。     

Integrated rough VIKOR for customer-involved design concept evaluation combining with customers’ preferences and designers’ perceptions

Customer-involved design concept evaluation (DCE) allows customers to take part in evaluating the design alternatives to get more popular design concept. Traditional customer-involved DCE methods still focus on the collection of customer responses and only consider cost and benefit characteristics of design criteria in multi-criteria decision-making (MCDM) based evaluation process. Few studies have customized the decision-making algorithms specifically aimed at customers’ preferences. This paper further explores the customers’ influences in the early stages of the product design development, and proposes a new rough number based MCDM model (i.e., VIKOR) incorporating customers’ preferences for design specifications along with designers’ perceptions for the characteristics of design criteria (cost and benefit) to perform concept evaluation under subjective environment, and this proposed method is named as integrated rough VIKOR (IR-VIKOR). The objective of this study is to identify the best design concept which maximizes the satisfactions of expectations from most customers as well as conforms to the characteristics of design criteria. Firstly, Shannon entropy is used to obtain the weightings and relative importance ratings of design criteria from the customers’ preferences. Secondly, the customers’ preferences for design attribute values, the importance ratings of design criteria and the characteristics of design criteria are combined together to define the ideal solutions to calculate the rough evaluation index of each design alternative in IR-VIKOR, and finally the ranking result is provided by IR-VIKOR to determine the best design concept. A practical design example is introduced to illustrate the evaluation process of this proposed method, and the empirical comparisons are further carried out to validate its superiority for DCE. Through the sensitivity analysis experiments including i) inside IR-VIKOR, and ii) between IR-VIKOR and other classical MCDM methods, the proposed method is proved to be a reliable and feasible customer-involved DCE approach.     

基于多体动力学仿真的冰箱助吸器优化设计

某款冰箱在关门过程中,门体在多个小角度处出现悬停的现象,影响用户的体验。针对这一问题,基于多体动力学仿真对冰箱助吸器进行了优化设计。将助吸器变形量、刚度、有效力臂接触位置点至铰链轴心连线长度,以及这一连线与接触位置法向夹角作为关键因子,研究关键因子与设计目标之间的关系,进行助吸器的结构设计与性能评估。在此基础上,基于多体动力学仿真,实现助吸器的优化,并形成最终设计方案。基于多体动力学仿真进行优化设计,可以缩短开发周期,提高设计效率,具有较高的实用价值。     

自动扶梯智能安防系统的设计

为了预防自动扶梯发生安全事故,设计了一种基于人工智能的自动扶梯智能安防系统。这一系统利用视频数据采集平台采集乘客数据,应用机器视觉及人工智能技术对乘客的姿态与行为进行主动识别,针对乘客的危险行为给出异常报警,在出现危险状态时触发声光报警器,控制自动扶梯减速或停止运行。这一系统通过有线或无线网络将数据传输至云平台,监管部门可基于手机客户端进行实时监控。特种设备监督管理部门、检验机构、维护保养单位、产权单位等可通过这一系统掌握自动扶梯运行状况。应用所设计的自动扶梯智能安防系统,可以显著提高自动扶梯安全事故预防水平和应急处理能力。     

现代生活陶艺人性化设计研究

生活陶艺涉及了陶艺、日用陶瓷设计、工业设计等,本文将从设计的角度来探索生活陶艺最具特色的两个部分--审美与形式。人性化设计包含个性设计、人文设计、绿色设计。本文将引用人性化设计中的个性化设计与人文设计中的来论述生活陶艺的功能与情感设计的运用。     

Safety performance functions incorporating design consistency variables

Highway design which ensures that successive elements are coordinated in such a way as to produce harmonious and homogeneous driver performances along the road is considered consistent and safe. On the other hand, an alignment which requires drivers to handle high speed gradients and does not meet drivers' expectancy is considered inconsistent and produces higher crash frequency.