基于Web的协同设计构模系统

提出了一种建立基于 Web的协同设计系统的模块化方法。系统的设计模块结构包括中心设计模块和学科设计子模块。中心设计模块就是设计小组依据用户对产品性能的需求而建立的设计项目管理和控制模块 ;学科设计子模块则是与产品设计项目相关的各学科领域在 Web上建立的分布式模块。它们分别封装了各个学科专业领域的设计知识、应用程序和工具软件等。系统框架为设计模块提供一致性的设计表征语言 ,协同、协调工具及模块间信息交互机制 ,依靠框架支持的各设计模块通过 Web联系在一起就构成了一个开放的、协同的集成设计系统。本文还以毛化钢板的功能形貌设计为例介绍了协同设计系统的多学科设计模块结构的构造方法     

支持概念设计的分布式协同设计环境的研究

一个复杂产品的概念设计往往需要多学科领域专家之间的协同。基于黑板模型 ,本文提出了一个分布式模块化协同设计框架结构。首先分别介绍了支持该框架结构的几个关键技术 ,即产品信息共享模型、设计问题的分布式构模方法以及基于约束的冲突检测方法。然后利用这些框架支持技术以及网络使能技术开发了一个分布式模块化协同设计环境 DCMDE,能有效地支持不同地理位置、不同学科的设计人员进行机械产品的协同概念设计。一个齿轮箱协同方案设计实例显示了系统的有效性     

机械设计的分布式构模方法

提出了一个设计问题的分布式构模方法 ,该方法将一个设计问题分解成一系列学科子问题 ,不同领域的专家分别构建各自领域的设计问题模型 ,这些分布式模型通过网络连接可以形成一个集成的协同设计系统。介绍了设计模型的定义、设计模型之间产品信息的交互以及设计模型在网上的实现。最后给出了一个齿轮箱设计问题分布式构模实例 ,显示了分布式构模方法不仅可以实现各领域专家的知识和经验的共享 ,同时可以使一个复杂的设计问题通过分布式模块协同完成。     

基于Web的协同产品设计系统的研究

提出了基于Web的产品协同设计系统的体系结构和实现方法，讨论了基于多Agent的分布式协同控制机制、异构信息源的语义描述以及可视化协同设计面板等关键技术，并实现了系统的原型。     

基于智能Agent的协同敏捷式产品设计系统与模式

提出了一种基于智能Agent的协同敏捷式产品设计系统框架与模式。研究了智能Agent的总体结构和功能 ;从产品设计系统结构、产品设计过程和产品设计模板与方法三个方面探讨了基于智能Agent的协同敏捷式产品设计系统 ;提出实施协同敏捷式产品设计的两种模式 ,即随机化协同敏捷式设计模式和并行化协同敏捷式设计模式。     

An ontology-based method for knowledge integration in a collaborative design environment

A collaborative design environment can be viewed as a multi-agent system where each design agent has knowledge about specific domains and can solve different problems. Several agents combine to solve a complex problem through knowledge sharing and inter operation. It is essential to construct an integrated knowledge base to improve the efficiency and consistency of complex problem-solving. An ontology-based knowledge integration framework in a collaborative design environment is presented in this paper. Ontology provides standard vocabulary, technical terminology and a domain model for knowledge integration. The representation and construction of ontology are critic problems for knowledge integration. An object-oriented concept graph representation is presented to represent ontology. It has advantages of both object-oriented methodology and Sowa’s conceptual graph. It can be translated into predicate calculus conveniently, and can represent the intension of concepts. In order to improve the efficiency of ontology construction, a semantic-based approach is presented. Firstly, a semantic affinity based clustering algorithm is presented to generate concepts from the term set of multi-agent systems. Then, ontology is constructed based on knowledge.     

基于多库的协同文档管理系统的研究

复杂产品的研制和开发通常需要经过若干个阶段，每个阶段对文档数据的管理要求各不相同，传统的协同文档管理系统忽略了这个事实。针对上述问题，提出了库的概念，作为存储和管理文档数据的基本逻辑单位。基于工作流给出库迁移模型，实现文档数据在库之间的自动流转，解决文档跨域协同设计问题。提出了基于项目和库的逻辑和物理全分布数据存储方案，可满足海量数据存储和不同设计阶段的数据安全管控要求。这些方法适用于支持复杂产品的协同设计的文档管理系统的研制与开发。     

面向产品自顶向下设计进程的集成协同决策

提出基于产品功能和物理拓扑结构的进程模型,将产品自顶向下设计进程分解为模块任务、零件任务、设计参数及其相互关联等基本组成元素.根据自顶向下的设计进程特点,提出产品集成协同设计软件系统架构,设计相应模块任务代理、零件任务代理以及基于敏度分析的代理设计方法,采用Java及Web技术实现了上述系统,以变速箱为设计实例说明系统的应用过程和效果.     

Manufacturing challenges in obtaining tailor-made closed-cell structures in metallic foams

Life cycle engineering design (LCED) is the key and comprehensive technology to realize manufacturing industries’ sustainable development. Its main objective is to support design teams to create products considering the entire product life-cycle from conception through manufacturing and assembly to disassembly, recycling, disposal, and lifecycle assessment. So LCED should be collaboratively implemented among the different departments. This paper puts forward knowledge management architecture of LCED based ontologies and multi-agent system. The definition of the domain-specific ontology, the multi-agent architecture are described. Based on the two concepts, this paper discusses the detailed construction of CAD agents, LCED evaluation agents and knowledge maintenance agents and the system implementation. It can fulfill the concurrent collaborative developing of a product under distributed environments and also meet the requirement of knowledge sharing, interoperability, reusing among the whole lifecycle of product.     

机械产品协同设计系统的开发与应用

通过对智能体应用模型的研究，结合齿轮设计智能体的具体开发论述了智能体的构建方式。并从产品设计智能化和自动化的角度提出了基于智能体技术研制产品设计系统的思想，分析了智能体间协同和通讯的关键技术，以及业务流程分阶段控制的结构化建模方法，建立了电控阀门产品协同设计系统的应用实例，从而实现了新产品开发任务的分布式协同求解。     

基于多组件智能体的机械产品协同设计集成方法

针对机械产品分布式异构环境下协同设计的特点，在定义组件智能体模型的基础上，提出基于多组件智能体的异构设计环境集成方法。采用“积木式”组合方式，构造了一个公共的集成框架。其特点是通过组合不同的组件智能体模块进行快速系统集成，同时使各个组件智能体之间可以进行通讯和协同，并共享产品的信息资源。所研制的集成框架可方便地构造一个机械产品设计项目，并在水泵网络协同设计中得到了应用验证。     

基于敏度分析和知识推理的产品协同决策

在对产品设计进程组成元素及其信息关联关系描述的基础上,针对设计中的连续和离散问题,提出基于敏度分析和知识推理的产品协同设计决策方法,给出几种敏度分析和知识推理方法及基于敏度分析和知识推理的产品协同决策进程。提出和实现了基于Agent的软件系统结构,以数控机床进给伺服系统的快速性耦合设计任务和同轴减速器零部件设计任务为例对协同决策进程及软件系统进行了说明。证明上述方法和系统可以快速地实现设计参数、上下游耦合设计任务之间的冲突检测和消解,减少设计迭代,提高机电类产品设计、协商的效率。     

Research on collaborative conceptual design based on distributed knowledge resource

Conceptual design is an early stage of the whole product development process, which involves the generation of solutions to satisfy the design requirements. It is a crucial issue on how to find proper principle solutions from enormous, isomeric, and even distributed knowledge resources repositories and then ally with these correlative distributed knowledge resources providers to collaborative conceptual design. Design is a task-solving process using corresponding resource, so it does not always have an agency in product design. This paper proposes a model of collaborative conceptual design based on distributed knowledge resources, which is centered on design tasks and based on dynamic knowledge alliance without agency. After a model of knowledge resource unit and a model of Web services based on knowledge resource are proposed, a virtual quantitative and qualitative knowledge resource representation based on knowledge grid is then put forward. The mixed knowledge resource repository is also proposed to support collaborative conceptual design. The strategies of knowledge register, publish, storage, reorganization, orientation, and problem solving based on mixed knowledge resource repository are then discussed in detail. The data exchange mode of principle solutions is then described. The selection strategy of dynamic knowledge alliance members is established. The framework of distributed knowledge resource is also put forward to support collaborative conceptual design. The process of collaborative conceptual design based on distributed knowledge resource is then proposed. The conceptual design of new devices for decreasing resistance of amphibious vehicles is given as an example, which demonstrates that the methodology is obviously helpful to produce valuable principle solutions with distributed knowledge for product innovation.     

面向设计者的协同产品开发过程仿真模型

为了在协同产品开发过程仿真中体现设计者的主动性、自治性和协同性,提出一种以设计者智能主体为核心的集成过程仿真模型。对集成模型的设计者智能主体模型、任务、产品信息、资源和组织分模型进行了定义和描述,并对设计主体的行为协议进行了系统研究。基于主体模型开发了一个产品开发过程仿真平台,实现面向设计者的可视化建模与仿真功能,并通过仿真试验和应用实践验证了所提出的集成仿真模型的有效性,在某摩托车发动机的协同设计项目中进行了实际应用。面向设计者的仿真为协同产品开发过程中人与组织因素的分析提供了一种量化和动态的研究方法。     

Concurrent Engineering based collaborative design Under network environment

Concurrent Engineering (CE) is a popular method employed in product development. It treats the whole product design process by the consideration of product quality, cost, rate of progress, and demands of customers. The development of computer and network technologies provides a strong support to the realization of CE in practice. Aiming at the characteristics of CE and network collaborative design, this paper built network collaborative design system frame. Through the analysis of the network collaborative design modes based on CE, this paper provided a novel network collaborative design integration model. This model can integrate the product design information, design process, and knowledge. Intelligent collaboration was considered in the proposed model. The study showed that the proposed model considered main factors such as information, knowledge, and design process in collaborative design. It has potential application in CE fields.     

面向CSCW的CAD/CAM系统设计

协同设计是实现并行工程的关键,ＣＳＣＷ为协同设计的实现提供了有力的环境和技术支持。分析了ＣＡＤ／ＣＡＭ系统实现协同设计的方法和步骤,提出了一个ＣＳＣＷ环境下的基于代理的ＣＡＤ／ＣＡＭ系统模型,并对模型中协同设计环境的构造、各代理结构的设计以及分布协同设计环境下产品模型的处理作了分析。     

A BPEL-based service-oriented dynamic collaborative mechanism for distributed product design

Product design is now concerned with various domains, knowledge, processes and tools, and has become much more geographically dispersed, causing the communication and cooperation to be complicated and dynamic. Hence, a shared and autonomous collaborative platform becomes a very crucial issue. Services, as the prominent paradigm for distributed computing, are adopted for developing geographically distributed, collaborative and evolvable systems. Especially, grid services presents a feasible method to solve the problems of sharing heterogeneous resources seamlessly. Thus, service-oriented computing has received much interest from industry and academic research communities to support collaborative work or business-to-business integration. However, a lack of elaborate coordination mechanisms and the dynamic environment of application deter the widespread application of service-oriented technology. There is a need for dynamic collaborative mechanisms to enable distributed product design in a manner that ensures that design activities and processes are planned and executed in an efficient, controlled method. This paper reports on a dynamic collaborative mechanism to facilitate collaborative work in distributed product design with Business Process Execution Language (BPEL) and service-oriented computing. The mechanism focuses on how to build and manage the dynamic collaborative process for different partners involved in distributed product design. With the support of Grid toolkit, a prototype system is built and evaluated with a case study to demonstrate the feasibility of the proposed mechanism.     

基于多组件Agent的协同设计系统

提出了适合协同设计的、基于多层有限状态机的组件Agent理论模型。通过对产品模型建立过程中应具备的中性交换、重用、远程更改、知识工程及自管理等方面的需求分析，提出了包含三类基本数据（功能数据、结构数据和管理数据）和外围更改数据的面向协同设计的产品数据模型。提出了将组件Agent理论模型和产品模型相结合的产品组件Agent模型框架，详细论述了实现过程中的几个关键问题：环境模型的建立、策略集组织、基于分布式组件技术的软件重用、程序与数据的封装。实际应用表明，该系统能有效地提高相关企业的产品协同设计能力。     

网络化产品协同设计支持系统的设计与实现

针对网络化产品协同设计的特点和多种应用需求，提出了多模式协同设计的思想，定义了几种典型的协同设计模式。基于XML和VRML技术，建立了支持网络化协同设计信息集成、过程集成和知识集成的集成模型。设计并实现了一个通用型网络化协同设计支持系统，给出了系统体系结构和实现途径，并以微小卫星研制为背景进行了应用验证。该系统具有柔性和开放性，可扩充，易裁剪，可支持多种协同设计模式，便于构成多种应用系统或与其他系统集成。     

基于多智能体结构的车间调度方法

车间调度问题是一个复杂的 NP问题 ,车间调度系统需要具有相当的柔性机制。本文提出了一种基于多智能体结构的车间层动态调度方法。系统中有三种代理 ,车间代理、资源代理和任务代理协同并行工作。车间代理负责各个任务代理之间的协调 ,任务代理安排任务的调度路径 ,资源代理安排车间中的具体制造资源。车间代理能够动态调整调度规则 ,解决任务代理之间的资源分配冲突。任务代理采用招标投标机制选择最佳资源代理。资源代理能够提出并实时调整局部调度方案。本文实现了一个基于多智能体结构的车间调度原型系统。