虚拟三维交互技术的工业设计应用

虚拟三维交互技术广泛应用工业设计的多个过程,是现代工业设计一种不可或缺的重要设计方法,也是目前最流行的产品开发理念.本文介绍了虚拟三维交互工业设计的内容及技术支持;交互性、网络化、高效率、绿色设计的应用特点;在产品设计制造、展示体验、推广销售过程中的应用等形式和优势.这种技术的应用既能够有效降低产品开发成本,又方便用户...     

Transforming Multidisciplinary Customer Requirements to Product Design Specifications

With the increasing of complexity of complex mechatronic products,it is necessary to involve multidisciplinary design teams,thus,the traditional customer requirements modeling for a single discipline team becomes difficult to be applied in a multidisciplinary team and project since team members with various disciplinary backgrounds may have different interpretations of the customers’requirements.A new synthesized multidisciplinary customer requirements modeling method is provided for obtaining and describing the common understanding of customer requirements(CRs)and more importantly transferring them into a detailed and accurate product design specifications(PDS)to interact with different team members effectively.A case study of designing a high speed train verifies the rationality and feasibility of the proposed multidisciplinary requirement modeling method for complex mechatronic product development.This proposed research offersthe instruction to realize the customer-driven personalized customization of complex mechatronic product.     

基于人机交互的产品界面反馈信息研究

文中对人机交互的反馈信息中存在的问题展开研究。综合了人机交互和反馈两方面的理论,并借助系统设计以及用户体验的研究方法,提出了人机交互中的产品界面反馈信息应当遵循的设计方法。     

RA-IQSE: a system for on-line quality support for the designer of machined parts and products

Work carried out under the auspices of the ESPRIT RA-IQSE project, which aims to design and implement an intelligent revision advisor for mechanical product designers, is detailed. The system philosophy relies on the use of detailed feature-based product model, and the data structures employed in the definition of such models are explained. The system architecture is broken into three main parts: a front end design module; a product evaluator; and a back end user interface providing feedback. The role of the system in the various stages of manufacture, from customer enquiry to series production, is described in detail and the principal benefits of its implementation are anticipated.     

浅析产品中的用户价值的内涵

产品与人们的生活方式息息相关,用户的偏好、需求、价值观决定了产品的属性,所以在产品的开发前对用户价值的研究在产品设计中有着至关重要的作用。论文主要从顾客价值理论中来分析用户价值的内涵,从而为产品设计的开发提供一些理论基础。     

提高微车焊接生产线“用户满意服务”方法探讨

与世界工业发达国家相比,低成本自动化的焊接生产线更适应我国国情,是当前我国焊接生产线技术改造的主攻方向,因此,研究和推广＂用户满意服务＂,提高微型汽车焊接生产线的品质与技术水平,增加焊接生产线的用户满意度,是我公司焊接生产线技术人员面临的主要任务之一。通过对如何开展＂用户满意服务＂的方法进行探讨,达到提高生产率和促进文明生产的目的。     

The demand driven chain [product configurator]

The configurator is a family of software systems that typically provides the customer with an interface to show the product range, enables customer-driven product configuration and may allow the ordering of configured product. In this paper, the author explains how a product configurator can help with demand management. A configurator can be an important driver for change in the supply chain infrastructure because it contains key information on customer preferences. It can also provide important data source - data can be mined from it on customer ordering behaviour, which may inform future strategy and be used for forecasting and supply chain management.     

Web环境下的协同装配规划系统

异地开发产品要求装配设计成员间进行协同工作。为支持分布式的装配规划活动，提出了协同装配规划网络环境的体系结构，研究了用户界面、通讯管理、应用服务和信息管理等功能模块，并结合虚拟现实建模语言表达的客户端产品显示模型和服务器端装配应用模型，采用Java—EAI等技术，开发了基于Web的协同装配规划原型系统。用一个驱动装配体实例，说明异地人员间同步的协同装配规划过程，验证了协同装配规划方法的可行性和系统的有效性。     

Development of a prototype customer-oriented virtual factory system

Current Computer integrated manufacturing/Enterprise Resource Planning (CIM/ERP) systems require harmony and communication between humans and facilities. A user’s preferences should also be considered in CIM/ERP systems. Virtual factory (VF), also known as virtual manufacturing (VM), systems can fulfill the requirements of current CIM/ERP systems. A VF system simulates virtual production in a virtual factory environment on the computer system which allows optimization prior to going into production. In this paper, we defined a VF system as a pre-analyzing system for designing, engineering and manufacturing a product in the enterprise system of the real world. The objective of this paper is to design a VF system and to develop a prototype system that the customer can participate in and be satisfied with. We selected a telephone as a sample product for the VF system. The VF system consists of four subsystems: virtual product ordering, design, manufacturing, and CIM/ERP interface. The prototype system aims to develop a virtual product ordering and design system.     

A framework for web-based product data management using J2EE

Because eManufacturing is motivated by the emerging need for distant collaborative design required among R&D centres and manufacturers of global-based enterprises, web-based product data management becomes an essential tool for realising the technology. In this paper, the design of a w eb-based p roduct d ata m anagement (WPDM) system is presented. The developed WPDM is aimed at achieving the goal of eManufacturing by providing an effective tool for product database management through the Internet utilising JAVA and J2EE technologies. In our scenarios, all the involved engineering and management team members who need WPDM are inherently located dispersedly. The ultimate goal is to optimise product cycle time and upgrade a traditional PDM system to face the challenge of the new era of global business competition. Basically, the proposed WPDM is developed in such a way that it allows designers/users to create, view and manipulate product data through the World Wide Web, while founding the architecture of the web application on a three-tier client/server system. The current WPDM of our design mainly uses servlets and JSP to handle user inputs and manage and retrieve product data from the database through the JDBC driver, with the server components stored on a middleware program called Tomcat. Within this environment, all parties involved in product design and manufacture can access the WPDM log-in page with the given URL after a successful identity authorisation. Consequently, these users can create, search and/or manipulate the desired engineering data through the enabled WPDM. The WPDM developed in this work has been experimentally tested in the lab.     

A system for the design and manufacture of feature-based parts through the Internet

The Internet has enabled the development of applications for supporting the design and manufacturing of industrial parts and products. Some actions have been performed by some research groups in different parts of the world aiming at conceiving product modeling systems based on the technology of features to allow information sharing, both for the activities related to product development and for manufacturing. This paper describes the implementation of the WebMachining system () developed in a context of e-Mfg and concurrent engineering, aimed at integrating CAD/CAPP/CAM for the remote manufacturing of feature-based cylindrical parts with symmetrical and asymmetrical features through the Internet, using an approach based on multi-agent systems. The information referring to the features is manipulated through a relational database management system. The graphic user interface (GUI) is implemented in Java and HTML. In this GUI, the user inputs the information on the design features that compose the part. Then these data are sent to the server. Since the part is cylindrical, the user models the part in two dimensions, and it can be visualized as three-dimensional through VRML. A database was implemented that stores the information on the product modeled by features, containing information associated with the form features, material features, tolerance features and technological features. These combined pieces of information allow the mapping of design features into machining features, which is fundamental for process planning. The database information is described in this article through the IDEF1X information model.     

The implementation of a cell-based manufacturing system

This paper describes the development of a cell-based manufacturing system. It considers all aspects of the implementation: the initial analysis of the problems of an existing system, product redesign for manufacture, cell design and cell implementation. The effectiveness of the resulting system is measured, using quantitative parameters. These include manufacturing lead times, due date performance and inventory levels. Other features, such as increased product quality, increased customer satisfaction and increased worker satisfaction, which cannot be measured easily, are discussed and shown to be major factors behind the successful implementation. Although presented as a case study the procedures adopted to facilitate the successful implementation are of general interest to any prospective manufacturing cell user.     

交互式虚拟设计与同步制造技术算法与图形系统研究

产品的创意外形设计与快速试制对于更好地满足产品多品种、短开发周期、优美外形、提高市场竞争力等需求具有重要意义,而现有的CAD/CAM和快速原型制造技术在这一方面仍然存在一些不足,这里提出的交互式虚拟设计与同步试制系统利用虚拟现实技术和计算机数字雕刻技术,在交互设计、创意设计、快速试制、材料多样性等方面都有所突破。文章阐述了在设计过程中工作描述、刀具轨迹包络计算、图形布尔运算、以及高速逼真图形显示等关键技术。实际工作设计与制造实验证明所开发的系统技术可行,已经可以进行基本的产品外形设计与同步制造。     

军用车载方舱布局设计

文中通过某典型实例介绍了军用车载方舱布局设计方法,主要进行了方舱布局、工业设计、工艺布线、表面涂覆、人机工程等方面的研究。从用户体验的角度,充分考虑了产品的实际使用需求,引入了工业设计,注重人机工程和细节处理。其目的是为了改变传统军用方舱以实现功能为主,在外观审美、人机环境、用户体验等方面欠缺的现状,以求共享当今商用化的技术成果。通过研究创新,军用方舱的布局设计水平得到了提升。     

An innovative cost modelling system to support lean product and process development

This paper presents a cost modelling system for lean product and process development to support proactive decision making and mistake elimination at the design stage. The foundations of the system are based upon three lean product and process development enablers, namely: Set-based concurrent engineering, knowledge-based engineering, and mistake proofing (Poka-yoke). The development commenced with an industrial field study of eleven leading European industries from the aerospace, automotive, telecommunication, medical and domestic appliance sectors. Based on the requirements of industrial collaborators, the developed system comprises six modules: value identification, manufacturing process/machines selection, material selection, geometric features specification, geometric features and manufacturability assessment, and manufacturing time and cost estimation. The work involved the development of a feature-based cost estimation method for the resistance spot welding process. The developed system was finally validated using an industrial case study. The developed system has the capability to provide estimates related to product cost and associated values concurrently, facilitate decision making, eliminate mistakes during the design stage, and incorporate ‘customer voice’ during a critical decision making stage.     

基于用户体验的产品感官研究

随着技术的发展,用户对产品的要求不断提高.体验设计突出了顾客感性价值的重要性,它试图通过更生动更富情趣的产品,来营造更为完善的用户体验.文中在分析了用户体验理论及其与用户感官联系的基础上,针对产品设计中包括视觉、听觉、触觉在内的多种感官因素,结合案例予以分析.     

Incorporating process capability index and quality loss function into analyzing the process capability for qualitative data

Process capability analysis (PCA) is frequently employed to evaluate a product or a process if it can meet the customer’s requirement. In general, process capability analysis can be represented by using the process capability index (PCI). Until now, the PCI was frequently used for processes with quantitative characteristics. However, for process quality with the qualitative characteristic, the data’s type and single specification caused limitations of using the PCI. When the product can not meet the target, even if it lies in the specified range, it should lead to the corresponding quality loss. Taguchi developed a quadratic quality loss function (QLF) to address such issues. In this study, we intend to construct a measurable index which incorporates the PCI philosophy and QLF concept to analyze the process capability with the consideration of the qualitative response data. The manufacturers can not only employ the proposed index to self-assess the process capability, but they also can make comparisons with the other competitors .     

Personalization for Massive Product Innovation Using Open Architecture

Product innovation is creation of new concepts to plan and realize technological and functional details in the product to satisfy market and customer needs. One of the key drivers to product innovation is reactions of the product to users' needs. Product innovation needs a cognitive design method based on needs of variant users for the product personalization. In this paper, an open concept is introduced to provide ways to meet user's individual need in product lifespan. It is for industries to propose product concepts based on open sources, develop and support the product on the public capability. Using the open concept in the product architecture, called open?architecture product(OAP), can improve the product personalization leading to massive product innovation. To promote this promise of the OAP, effective methods are discussed for the OAP development. This paper introduces research on OAPs using adaptable design methods to meet product personalization. Adaptable design is based on the modular structure for product adaptability using function modules and adaptable interfaces. The proposed method provides solutions for planning modules and implementation of OAPs. Methods of OAP module planning, detail and interface design are described for transformation of product concepts into physical structures. A multiple?purpose electrical car is developed in a case study to show effectiveness of the proposed method.     

模糊回归理论在QFD系统建模中的应用研究

针对QFD规划过程的内在模糊性,把模糊回归理沦应用于QFD的规划过程,建立了确定顾客需求与工程特性之间的关联函数及工程特性之间自相关函数的数学方法,进而建立了一个QFD的产品规划模型。该方法适合于各种工程设计问题,尤其是在不确定的、模糊的条件下,能够有效地确定关联函数及自相关函数,帮助开发人员优化顾客需求的满意水平,使顾客对产品满意度最大。