μC/OS-II在XC164CS上的移植方法

为简化应用程序的编写,在嵌入式系统开发时采用实时操作系统平台,提出将μC/OS-II实时操作系统内核移植到Infineon XC164CS微控制器上的方法。以轿车车门控制器设计为例,应用已在XC164CS上移植的μC/OS-II内核,添加车窗控制、按键输入、后视镜控制和看门狗4个任务,测试结果证明了内核移植的正确性和有效性。     

基于XC164CS的车载TTCAN网络通信设计

阐述Infineon XC164CS单片机TwinCAN模块结构原理和CAN总线网络通信的设计方法.根据XC164CS的应用特性设计了适用于TTCAN的车载动力系统的CAN通信网络,开发了相应的硬件接口电路,并在μC/OS-Ⅱ嵌入式系统平台上设计了通信模块的底层驱动软件以及多任务应用程序.     

基于Infineon XC164CS四轮电子差速系统设计方案

基于InfineonXC164CS微控制器,设计一种针对四轮驱动电动车电机的控制方案。介绍了基于Ackermann和Jeantand转向模型的四轮速度关系,四轮驱动汽车的电子差速算法以及电动轮的软件设计。实践证明,基于XC164CS,利用软件就能实现对电动轮的控制。     

基于μC/OS—Ⅱ的车身控制系统设计

采用英飞凌XC164CS微控制器,结合μC/OS-II的实时调度和任务管理功能,详细阐述了车身控制系统的特点和基于μC/OS-II的汽车车身控制系统设计。以NE6741型客车设计实例,应用文中阐述的设计方法实现了该型客车的车身控制器软件设计。     

μC/OS-Ⅱ在混合动力整车控制器中的应用

在混合动力整车控制器设计开发的过程中,采用了μC/OS-Ⅱ开放源码的实时操作系统,实现了操作系统到XC164CS微控制器的移植,并采用多任务方式优化设计了整车控制器的软件,提高系统的稳定性和实时性。     

基于Wi-Fi远程通信的无线烧录器的设计与实现

针对传统ECU在程序烧录时需要频繁的插拔操作,工作量大,而且不能同时对多个ECU进行烧写,造成的调试效率低下等问题,开发出一套以Wi-Fi的无线通信原理为基础,以LabVIEW软件开发工具和英飞凌XC2000 Family MCU——XC2234L为平台的汽车ECU远程烧录工具。本烧录工具可以高效的实现对ECU的远程连接,批量烧录,操作简单,避免了频繁的插拔操作,相对于传统方法而言也更加方便、快捷和高效。     

基于SM卡的汽车ESP数据采集系统设计

基于SM卡的汽车ESP数据采集系统。该系统使用XC164CS微控制器进行数据采集和处理,使用大容量的SM卡作为数据存储介质,并在FAT16文件系统的基础上,提出一种适用于嵌入式数据采集系统的数据存储方案。     

基于XC2287M的工程机械ECU设计

ECU是工程机械电控系统的核心部件,目前国内中高端ECU市场基本被国外厂商所垄断。设计了一款基于XC2287M微控制器的工程机械智能ECU,采用CODESYS软PLC作为编程平台,支持IEC 61131-3定义的5种标准PLC语言进行编程。所设计的ECU拥有丰富的I/O资源和完善的安全保护机制,能够广泛应用于各种工程机械控制系统,打破国外厂商对ECU市场的垄断。     

基于CAN总线的ECU在线编程技术

针对已安装完成的车身ECU程序升级困难的问题,基于CAN总线的自定义协议,设计了一种ECU在线升级方案,并在Infineon XC2000系列单片机上具体实现。详细介绍了在线升级系统的软硬件组成、单片机Bootloader的设计方案,以及系统的工作过程。实验结果表明,该系统能够很好地完成ECU在线升级功能,并能有效解决ECU在线升级过程中的一些问题。     

基于XC164CS的合作式调度器实现

在汽车电子等控制装置中,可靠控制不仅在于控制器硬件的品质,还需考量内部程序结构的可测量性与可控性。以汽车电子应用较为广泛的高性能16位单片机XC164CS为基础,对比了合作式调度与抢占式调度,在合作式调度实现理论指导下,构建了一个以定时器为调度基准的控制器,该控制器具有良好的可控可预测性,使用者能够清晰地掌握各个分段程序的运行时间和可预期效果。     

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.