DSP伺服控制系统软件设计

文章首先介绍了DSP伺服系统软件的模块化设计,改进系统信号流图,将软件模块与信号流图模块对应,以对软件进行增量式搭建;其次介绍了利用面向对象技术设计伺服系统的方法,根据面向对象要求确定对象,再给出关键消息定义,指出伺服系统软件使用面向对象设计时应注意的问题。     

面向对象的软件构造

面向对象技术的发展改变了传统软件系统的结构和设计方法学．本文作者提出一种称为ＳＣＯＰ的面向对象的软件系统结构模式，即软件是对象模块的复合，而软件设计则是对象模块经过程控制进行复合的构造生成．本文从语义模型、描述语言、设计方法学和支持环境等几方面对ＳＣＯＰ进行扼要的介绍．     

基于嵌入式计算机的雷达系统显控终端软件设计

讨论了PC104-plus嵌入式计算机平台下,某新体制双基地雷达接收站显控终端软件的设计。介绍了系统的硬件组成．并详细介绍了显控软件的设计。显控软件采用面向对象技术,进行了人机界面和控制程序的开发。其中控制程序又分为串口通信模块、PC104-plus通信模块、多线程和同步模块、数据库模块。     

基于COM+的信息系统软件体系结构设计的市场模式

基于组件的多层客户服务器结构信息系统软件体系结构设计是信息系统开发中的新问题,它不同于面向对象系统的软件体系结构设计,更不同于结构化方法中软件模块结构设计。该文提出了一种基于COM+组件的信息系统软件体系结构设计模式———市场模式,并详细地论述了市场模式在信息系统体系结构各层次上应用的基本原理和方法。     

基于VxWorks实时操作平台的半实物仿真试验测试系统设计

半实物仿真试验测试系统以VxWorks实时操作平台为测控核心,详述了系统架构和软硬件组成.对伺服配套单元、试验控制中心等硬件模块及系统程序架构、软件信息流、实时数据采集软件、远程控制软件及终端软件等软件模块做了重点介绍.解决了运载型号仿真状态众多,仿真试验的高速实时性要求以及模拟火箭全程飞行状态等3个关键问题.试验表明,反射内存网络实时性良好,各控制输出和信号采集实现实时传输,系统软件运行稳定可靠,达到预期设计目的.     

面向对象耦合性度量工具的设计与实现

软件度量是保障软件质量的重要手段。结合软件度量技术，设计并实现一个面向对象耦合性度量工具，用于全面度量面向对象系统的耦合性。给出了此度量工具的体系结构，详细讲述了该工具各个模块的设计与实现方法，其中着重讲述了中间信息库的设计，给出了度量结果示例。最后介绍了该度量工具的特点。     

设计模式在嵌入式虚拟仪表系统软件设计的应用

介绍了设计模式在基于嵌入式计算机的战车虚拟仪表系统软件设计的应用。运用面向对象软件工程方法,探讨了在嵌入式软件设计中提高代码的可复用性、软件的可维护性和系统的可扩展性。     

开放式自动切割机计算机控制系统软件设计

介绍一种玻璃自动切割机开放式计算机控制系统软件设计方法,提出了一种开放结构系统参考模型,将面向对象的系统分析、设计与实现方法应用于本控制系统软件的研制,已成功应用于生产。     

自动测试系统软件框架的设计与应用

传统的软件开发复用粒度有限,复用范围一般仅限于若干个独立的类或函数;面向对象的软件框架正是为了解决大粒度的软件复用问题而提出来的;文章介绍了软件框架的基础知识,分析了自动测试系统软件的共性,设计了针对自动测试系统的软件框架,并在此基础上开发了某型空空导弹飞行控制组件综合测试系统软件;实际应用表明,该软件框架可以满足自动测试系统软件的需求,具有一定的通用性,能够缩短专用测试设备的开发周期.     

面向对象程序设计及其在系统仿真中的应用

基于作者的分析与理解,阐述了面向对象设计方法的特点及其为软件设计方法所带来的变革.并且在仿真系统软件的开发中,通过面向对象设计方法的应用,进一步展示了面向对象设计方法可能为软件方法学带来的进步.     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.