基于MEGA128的运动器设计与实现

服务器通过GUI程序经过RS-232接口向MEGA128单片机发送运转命令,MEGA128接收命令后,通过MEGA128的PWM端口,控制电机运转,实现运动控制器控制;该控制器通过计算机编程和AVR单片机编程,实现计算机到单片机,单片机到运动器件运动控制。     

捻度仪控制器设计

介绍以AT89C58单片机为核心构成的捻度仪控制器的软硬件设计方法。系统使用单片机IO口通过继电器控制直流电机转速,采用光电传感器和定时/计数器实现捻度测量。详尽阐述了控制器硬件结构和软件流程。经测试表明该控制器具有测量精确度高、性能稳定、成本低等优点。     

基于单片机的锅炉智能控制技术

针对多功能绿色环保锅炉的控制问题，提出了基于单片机的锅炉智能控制器的设计构想；并构建了以该控制器为核心的控制方案。给出了基于单片机的锅炉智能控制器的硬件电路设计和系统的软件实现方案。该控制器以较低的成本解决了多功能绿色环保锅炉的自动化控制问题，并已在实际生产中得到应用。     

以太网智能家居控制器的设计

本文依据智能家居发展现状,提出了一种基于8位单片机的以太网智能家居控制器的设计方案。该方案集本地红外控制和以精简TCP/IP协议为核心的以太网远程控制于一体,使用户可以通过该控制器对家居中的设备和环境进行实时控制和监测。     

热水锅炉循环和补水自动控制器的设计

介绍一种以MCS－51单片机为核心的热水锅炉循环和补水自动控制器。该控制器具有补水压力闭环控制和循环水泵定时工作控制功能。为保证单片机的可靠运行，本文还介绍了一种实用的Watchdog电路。     

基于PID算法的直流电机PWM调速控制器设计

为提高对直流伺服电机转速的控制精度,将控制器硬件电路设计成闭环控制系统,通过位置传感器采样获取伺服电机转速并反馈给单片机系统,引入基于PID控制的算法对单片机进行编程控制,设计了一款能通过反馈控制自动修正直流电机转速的调速控制器,文中给出了控制器的硬件电路设计方法和系统软件的编程算法。该控制器具有成本低、控制精度高、调速范围宽、响应速度快等特点,通过简单硬件接口就能将其嵌入到的各种小功率直流电机控制产品中加以应用。     

基于NRF905的无线窗帘控制器设计

针对现代化办公和家居生活智能化需求提高的问题,设计了一种基于NRF905的无线智能窗帘控制器,可实现对窗帘的手动控制、无线遥控控制。本设计以STC12LE5616AD单片机为核心控制器,利用单片机的扩展端口及NRF905无线收发器实现无线控制功能。该设计主要包括手动控制、NRF905无线遥控控制及电机控制部分     

基于AVR单片机的城市远程亮化控制器的设计

本文介绍了一个基于AVR单片机的城市的远程亮化控制器,该控制器是整个城市亮化控制系统中的最前端的设备,该控制器通过接收中心站的命令来实现路灯及景观灯的开关控制以及电量参数的采集.该控制器的应用将为城市照明及景观亮化提供一个全新的控制平台.     

基于CAN总线的智能车控制系统的设计

以学生竞赛中采用的智能车系统为研究对象,提出一种结合STM32单片机和CAN总线的分布式智能车控制系统。使用STM32F4X单片机作为核心主控单元控制器,两片STM32F10X单片机分别作为循迹单元和驱动控制单元控制器。该系统设计改变了传统的集中式智能车控制系统设计,将核心控制单元与驱动控制单元、循迹单元分离,减轻核心主控单元的总线压力,提高循迹单元和驱动控制单元的实时性和灵活性。     

实现温度自动调节的模糊控制器设计

为了实现工业上所需精度的温度检测与控制,以MSP430F149单片机为核心,设计一种实现温度自动调节的温度控制器,给出控制器的硬件结构框架与软件设计方案。着重介绍了模糊控制器的设计方法。通过该模糊控制算法,温度可达到自动调节。实践证明该系统具有良好的稳定性。     

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.