CAN总线在混合电动汽车能量总成控制系统的应用

根据CFA6470长丰混合电动汽车的特点，设计了一种基于TMS320LF2407A内嵌式CAN控制器的混合电动汽车能源总成控制器，组建了基于CAN总线多主分布式控制技术的控制网络。提出了CAN网络在混合电动汽车布局的方法。通过在湖南长丰混合电动汽车的应用证明，基于CAN网络的混合电动汽车能量总成控制系统运行稳定。     

基于TMS320F2812的CAN总线通信的设计与实现

TMS320F2812是一种用于控制的32位定点DSP芯片，对其增强型控制器eCAN的增强特性进行了分析。重点介绍了CAN总线通信中利用eCAN构建CAN网络的硬件节点设计，并给出了CAN总线波特率位定时计算方法，CAN软件设计的流程和对应的C语言初始化，发送接收调试程序，总结了在实际项目应用中的调试技巧。这一设计基于电动汽车，已成功应用于混合动力汽车能量总成控制系统。     

混合动力电动汽车CAN总线开发实践

在对CAN总线技术以及混合动力汽车的结构原理进行分析的基础上,研究了混合动力电动汽车基于CAN总线的控制系统的网络拓扑结构。根据CAN节点系统结构框图,完成了CAN节点的硬件设计和软件的初步调试,并通过实验模拟了电机模块和多能源控制器之间的通讯。     

无触点开关控制的CAN总线汽车灯光系统设计

针对传统车灯控制系统布线复杂、可靠性低等问题，以及机械触点开关速度慢、磨损较大等缺点，采用霍尔元件并结合CAN总线技术设计了无触点开关控制的CAN总线汽车灯光控制系统，同时对CAN总线进行了电磁兼容性设计，以减弱控制器等干扰源带来的电磁干扰。文中采用飞思卡尔高性能单片机MC9S08DZ60和CAN收发器TJA1050，...     

CAN总线在现场总线控制系统中的应用

本文通过介绍CAN（Controller Area Network，控制器局域网）总线技术在FCS（Fieldbus Control System现场总线控制系统）中的应用，阐述了CAN总线设备的设计与实现，并简要说明了如何基于CAN总线来 设计现场总线控制系统。     

CAN总线在现场总线控制系统中的应用

本文通过介绍CAN(Controller Area Network．控制器局域网)总线技术在FCS(Fieldbus Control System现场总线控制系统)中的应用。阐述了CAN总线设备的设计与实现，并简要说明了如何基于CAN总线来设计现场总线控制系统。     

基于CAN总线的底盘综合控制系统设计

设计了基于CAN总线的底盘综合控制系统,主要包括对整车、四轮驱动、转向系统和制动系统的控制器设计。采用CAN总线实现电动汽车各控制器间的通信,并完成了CAN网络应用层协议的制订。在综合考虑相关影响因素基础上,设计了各控制器的硬件,建立伪逆控制分配算法实现常规的控制量分配,以及必要时实现控制再分配,保证车辆的操纵稳定性。系统的仿真结果表明,该系统可有效地完成常规和再分配控制量,兼顾电动汽车的灵活与稳定。     

基于ARM9的四足机器人控制器设计

针对液压驱动的四足机器人复杂实时控制的问题,提出了一种以ARM9为内核的嵌入式控制系统的设计.该控制系统采用RS232串口和监控机进行通信,控制层采用一个主控制器和4个子控制器的分布式控制系统,主、子控制器之间采用CAN总线通信.实验证明,系统设计合理,运行稳定可靠,能较好地完成四足机器人对控制系统的实时性要求.     

起重机吊重防摇CAN控制系统智能节点设计

起重机吊重防摇控制主要采用吊重、小车、大车等运动状态信息反馈控制小车和大车电机及吊重起升电机的驱动．进而控制小车和大车的运动状态来达到防止和衰减吊重防摇的目的。考虑到CAN总线的使用特点、控制系统中传感器位置分散和起重机的工作特点，利用CAN总线构建防摇控制系统。用单片机PIC16F877设计了CAN总线智能节点，很好地解决了控制系统中硬件可能受到的干扰抑制问题，单片机控制CAN控制器由CAN驱动器经CAN总线发送和接收现场实时数据。CAN总线智能节点的设计是基于DSP的防摇控制系统设计的前期内容之一。     

一种机器人嵌入式网络化控制系统体系结构的研究

针对机器人控制系统，探讨了基于串行总线的网络化控制系统的优缺点，提出了一种新的以ARM和FPGA为核心的机器人分布式多CAN总线控制系统体系结构．该体系结构有效地降低了网络化控制系统中对总线带宽的需求，可以实现对控制信息的分级处理和实时的伺服控制．还设计了基于FPGA的多CAN总线控制器，介绍了基于Linux的机器人控制软件体系结构的实现方法．最后，在模块化机器人中的应用表明该网络化控制系统体系结构是可行的．     

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.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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