LEODO人机界面在液压马达综合性能试验台中的应用

本文介绍了基于LEODO人机界面的液压马达试验台监控系统。使用ET组态软件实现液压马达试验台的实时监控、数据采集与处理。     

基于可编程控制器的调胶控制系统设计

本文介绍了调胶控制系统的组成和工作原理,着重叙述了三菱PLC与LEODO人机界面结合的控制方式,使系统的性能得到较大的提高,系统投入运行后取得了良好的经济效益。     

西门子在转炉除尘中的应用

控制系统采用了西门子S7—300系列的PLC,对蒸发冷却器、电除尘器及阀门等工艺生产线设备实现过程检测、监视、调节和控制,进行CO的利用。PLC与PLC之间的数据传输采用SIEMENS STEP7专用的通讯模块。网络监控画面采用功能强大的SIEMENS WINCC,人机界面好,便于操作使用。     

S7-1200 PLC在DMD-B型堆码机的应用

堆码机是瓦楞纸板生产线中的关键设备之一,它的性能直接影响到整个生产线的生产效率。生产中,堆码机需要与生产管理系统上位机和人机界面交互操作,这就要求堆码机的控制系统拥有很强的通讯能力。DMD-B型堆码机采用SIMATICS7-1200PLC作为控制平台,扩展方便,通讯能力非常强大。上位机采用RS485MODBUS协议与PLC通讯连接,人机界面与PLC采用以太网进行通讯。整套系统能完成人机界面交互操作、I/O逻辑运算、故障诊断及通讯等功能。     

基于PLC的天然气压缩机监控系统设计

介绍一种基于PLC和人机界面的天然气压缩机监控系统的设计.     

流水线自动抓送料机械手控制系统设计

针对流水线上传统小部件抓送料系统柔性低、保护差、易出现故障等问题,设计了一种基于西门子S7-1200PLC与步科人机界面实时监控融合的自动抓送料机械手系统.系统通过PLC运动控制与伺服电机配合,保证运行位置的精确性;通过各环节传感器到位锁定与伺服驱动器实时反馈的双闭环控制,保证系统运行的安全性;通过行进与返回不同速度的设计,提高工作效率.试验结果表明,系统运行速度和稳定性满足生产线需求,效率提高50％,人工成本降低40％.     

铜材连续挤压生产设备的监测、控制系统研制

铜材连续挤压生产线控制采用计算机监控系统,以工控机作为上位机对PLC及整套生产设备线的状态进行监控,以INTOUCH软件作为用户可以定制功能的软件平台,开发出良好的人机界面、监控画面以及数据存储、等功能。PLC作为下位机通过通信线缆与上位计算机相连,执行上位机指令,通过梯形图编程完成逻辑控制、顺序控制及实时控制等功能。铜材挤压生产设备结合现代电子技术和计算机构成的控制系统,实现模糊控制,全线自动,其性能稳定可靠、操作简单,完全满足生产工艺的要求。     

基于PLC的高空火炬自动点火控制系统的设计

介绍了一种高空火炬点火控制系统,该系统以S7-200PLC为控制核心实现点火过程中的自动控制、数据记录、实时报警等功能.用TD400C文本显示器作为人机界面,实现现场数据操作与监控.S7-200PLC通过MODBUS通信协议与远程监控室上位机通信,实现远程监控.     

基于PC与软PLC的气动物流生产线控制系统设计

本文在介绍了气动物流生产线结构和功能的基础上,着重阐述了应用CANopen现场总线与组态及软PLC软件CoDeSys改造物流生产线监控系统的方法,监控计算机（PC）运行CoDeSys软件作为主站通过PC适配卡与物流生产线各工作单元的I／O从站进行通信,构成基于PC与软PLC分布式控制网络;通过组态软件创建动态监控界面,实现对物流生产线工作过程的实时监控。     

城市防洪自动化监控系统

阐述了城市防洪自动化监控系统总体设计方案,详细介绍了以PLC系统为核心,采用人机界面开发工具、工业以太网技术和数据库技术设计的城市防洪自动化监控系统的结构和功能.     

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.