防护工程风管清扫机器人车载控制系统设计

为提高防护工程内部空气环境质量,针对平战两用风管清扫机器人设计了一种控制系统。首先设计了清扫机器人的电气控制方式,并绘制了机器人车载控制系统的电路框图。对车载控制系统的五个主要部分进行了设计,绘制了车载控制系统的框图,并制作了车载控制系统PCB板。将该控制系统用于清扫机器人,进行了样机的设计制作,综合性能良好。     

一种可无线报警的油箱电瓶防盗装置的设计

为减少大型车辆燃料电瓶被盗,采用单片机控制编码芯片进行幅度键控并与解码芯片通信的方式,设计了一种可无线报警的油箱电瓶防盗装置,介绍了其硬件电路、程序和防破解设计.该装置样机经过检测,效果良好,具有较强的使用性和推广价值.     

Rhapsody模型库管理系统设计

介绍飞行控制系统虚拟样机开发平台的体系结构。针对Rhapsody模型,采用ActiveX数据对象技术开发了客户/服务器结构的分布式模型库管理系统,实现了复杂系统虚拟样机设计工程中模型、文档的规范化管理和可重用。该系统由显示层、逻辑层和数据层组成,其中逻辑层包括模型结构管理、文档管理、用户权限管理和系统信息管理四个模块。详细阐述了该系统的体系结构、功能、特点及实现方法,并结合Rhapsody飞行控制系统虚拟样机的设计流程,对模型库管理系统的应用进行了可行性验证。     

小型全天候自动测距定位仪

介绍用于海域和内河的微波测距仪.该仪器体积小、重量轻、携带方便.就仪器的研制方案进行了论述,并作了设计计算.提出了研制中的难点及其处理方法.给出了样机使用测试结果.仪器的重要指标绝对误差小于±2m.     

硅钼棒电阻炉温度控制系统的设计

对硅钼棒炉原有温度控制系统进行了研究,研制了一套以智能温度控制器为核心、具有双闭环负反馈的温度控制系统.设计了主回路过电压和过电流保护电路,并根据加热件材质特性给出了工艺建议.调试结果表明,系统具有操作简单、故障率低和控制品质好等优点.实践证明,该控制系统具有一定的推广应用价值.     

钢铁厂厂区污水处理工艺仿真控制系统研究

钢铁厂厂区废水与超细颗粒粉尘亲和性强,难于分离,而粉尘又是钢铁厂的宝贵资源,不对钢铁厂厂区废水进行处理而外排,将造成的既污染环境,又浪费资源,针对该问题,提出了对钢铁厂厂区污水进行微波处理的技术方案,并建立某钢铁厂钢铁厂厂区污水工艺仿真控制系统;提出了建立该控制系统的研究方法,并结合工程案例,给出了控制系统的组成部分;建立了实验性的微波处理器模型;最后以实验设计数据为基础,对该钢铁厂厂区污水微波处理效果做了模拟,并做了数据分析.     

多孔板微阵列制备机器人系统的设计与研究

设计并研制了一种多孔板微阵列制备机器人系统.该系统机械手采用3自由度移动悬臂式正交结构,利用有限无法对该机械手结构的刚度进行了设计计算.给出了分样头清洗干燥、空气过滤净化、湿度控制的设计方案,建立了控制系统硬件结构和软件功能树.实验结果表明,样机自动化程度高,运行可靠,X、Y轴机械手重复定位精度达到±3.6μm和±2....     

高速光纤链路通信HSSL的设计与实现

光刻机工件台控制系统是一种典型的分布式控制系统,定位精度和运动精度要求达到纳米级,其复杂的控制系统要求具有强实时性和高度同步性.针对上述特点,该文设计了一种基于光纤通信的高速串行链路(HSSL)互联方案.该设计中自定义光纤传输通信协议,包括数据帧、应答帧、触发帧.并通过FPGA编程实现光纤传输通信协议.通过实验表明,该光纤通信传输数据具有正确性、高可靠性、抗电磁能力强等特点,具有重要的工程应用价值.     

基于数据手套的遥控小车控制系统

针对目前智能小车主要采用手柄、键盘等方式实现遥控操作而存在功能单一、携带不便、操控不直观等缺点,提出采用数据手套实现智能小车的遥控操作,取得了良好的控制效果。介绍该系统的总体结构与基本工作原理,阐述采用数据手套实现智能小车遥控的具体设计方法,并研制出样机对其控制效果进行实验验证,结果表明：该控制系统能满足智能小车的各项控制要求,具有较好的应用价值。     

自主攀爬式曲面作业机器人设计研究

以国家大剧院椭球壳体的清洗为应用背景,针对曲面高空作业的特点,设计了首台复杂曲面自主攀爬式机器人样机.机器人由攀爬机构!移动机构、清洗机构、俯仰调节机构组成;在对机器人总体结构和结构原理详细介绍后,对机器人运动功能实现进行了讨论.控制系统采用基于CAN总线的网络结构,以P80C592单片机为核心构成分布节点控制器,并着重对检测系统进行了研究.机器人在国家大剧院的真实环境下进行了作业实验,结果表明样机系统的设计组成原理合理,机械结构和控制系统方案成功可靠.     

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.     

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.     

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     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.