专家系统中的知识表示及其实时处理方法研究

文章以飞机驾驶员辅助决策系统为实俐，建立并开发了一种面向对象的黑板模型．提出并实现了驾驶员辅助决策专家系统实例中知识的表示和实时知识处理的解决方案。该方案通过改善黑板模型的控制方式，提高了知识处理的并发性，同时引入消息管理器机制来实现对知识的实时处理。实际应用表明本方案比较适合于大型的知识系统的开发。     

基于分布式软构件的自治对象仿真

提出了仿真自治对象的概念，并用分布式软构件来实现各个自治对象，给出了基于这一方法的一体化建模仿真平台的体系结构。     

Performance Modelling of Complex Dynamic Production Systems Using Temporised Object-Oriented Petri Nets with Changeable Structure (TOPNs-CS)

An object-oriented Petri net with changeable structure (OPN-CS) is capable of modelling complex dynamic production systems subject to changes. However, an OPN-CS is limted to functionality modelling of the system. For performance modelling of a complex dynamic production system, OPNs-CS are extended to temporised OPNc-CS (TOPNs-CS). The extension is carried out by temporising OPNs of production resources and the message passing relationships among production resources. The methods of capturing some performance proprieties based on a TOPN-CS model of a system are presented. A case study is provided to show how TCPN-CS is used for modelling complex dynamic production systems. TOPNs-CS can be applied in control, scheduling, and optimisation of the processes of a dynamic production system subject to changes.     

多种OOPL的统一框架模型

本文针对已有的面向对象语言，探讨了不同语言编写的混和类及其对象的组装问题，提出了一种具有统一框架的ＯＯＰＬ模型。在该模型中，引入了类构件和消息体的概念；一个类构件由一个类规范和０到多个类实现组成；引入接口相容和接口一致，以方便混和对象之间的消息通信；引入接口继承和实现继承，以刻画混合类构件之间的继承关系；类规范的操作换名接口说明和类实现的接口调整，可以解决类构件间多继承关系引起的名字冲突问题；消息     

OOAnalysis的设计和实现

ＳＣＯＰ是一个面向对象的组合框架软件，ＯＯＡｎａｌｙｓｉｓ是ＳＣＯＰ中支持系统分析的一个工具系统，本文介绍了ＯＯＡｎａｌｙｓｉｓ的设计和实现．该工具采用并行／递归式面向对象的分析方法，采用自底向上的系统构造和对象抽象与自顶向下的系统分解和对象精化相结合的方法建立对象模型，强调多层次抽象、并行工作和递归建模．这个工具有多层次、可视化和自动化的特点.     

面向对象设计方法的压铸模CAD系统的研究

采用面向对象技术对压铸模系统进行分析和设计,提出面向对象的压铸模设计模型,将压铸模设计域中的对象进行了提取、划分和抽象,得到了压铸模设计对象,并以此来设计压铸模CAD系统.     

FuncDesigner—a functional design software system

Engineering design focuses on the development of products and artefacts to satisfy the specified function. Although considerable advances have been made over the last two decades in functional modelling, there is not very much progress on commercial Computer-Aided Design (CAD) systems that really aid the designer in converting functional specifications to concept variants. Based on our previous work on Behaviour-driven Function-Environment-Structure (B-FES) modelling framework, this paper presents a functional design software system, called "FuncDesigner", to support the functional design of mechanical products through functional reasoning steps, including causal behavioural reasoning and functional decomposition. A function object library and a behaviour object library have been developed as well to serve as the knowledge base for the computerised functional modelling environment. The proposed functional design software system has been evaluated with a design example of a terminal insertion unit in an automatic assembly system for manufacturing electronic connectors.     

A Prototype Knowledge-Based System for Conceptual Synthesis of the Design Process

This paper presents a knowledge-based system "KBCS", the "Knowledge-based conceptual synthesiser" that supports the synthetic phase of conceptual design. It was developed using an expert system shell called CLIPS. By using this knowledge, physical behaviour can be derived from a desired function or desired behaviour, and a functional model which represents causal relationships among the functions and behaviours can be created. In addition, complicated desired functions which cannot be matched with the functional output of any behaviour after searching the object-oriented behaviour base, will be automatically decomposed into subfunctions by means of relevant function decomposition rules. A case study for the conceptual synthesis of an automatic assembly system provides an application of this intelligent design environment, and a demonstration of its methodology. In this paper we also describe how two popular AI representation techniques, object-oriented representation and production rule representation, can be usefully integrated to solve the problem.     

面向对象建模技术在监控系统中的应用

主要描述了面向对象建模技术在监控系统中的设计和应用过程,包括介绍了对象建模技术的３类模型、动态模型和功能模型的分析、建模和设计方法。     

UML和ROSE工具在指挥控制系统开发中的应用

UML统一建模语言已受到工程界广泛的关注,但采用UML进行面向对象建模的过程仍没有一个统一的标准.该文结合UML和ROSE建模工具,介绍在工程实践中采用的建模方法以及面向对象代码框架的实现.