基于PXI总线的导弹自动测试系统设计

为了满足军队导弹测试自动化、模块化、通用化的要求,基于PXI总线,应用模块化测试仪器及虚拟仪器技术组建了某型导弹自动测试系统;设计并实现了测试转接平台,在Visual C++编程环境下,应用模块化和面向对象技术开发测试程序,基于Lab-VIEW控件制作了测试界面;实践证明,该系统工作性能稳定,交互界面友好,易于操作,且具有较强的扩展性,能够大大提高部队现有导弹装备的支援技术水平;文章介绍了系统的软硬件结构、主要设计思想及一些技术途径。     

空空导弹电子信息综合测试系统方案设计

在分析测试系统的发展概况及趋势基础上,介绍了一种空空导弹电子信息综合测试系统的设计;该设计基于CPCI总线技术,采用开放式通用化的硬件模块设计和模块化与层次化的软件设计方法.该测试系统集自动和手动于一体并具有良好的通用性和拓展功能,能够应用于导弹的生产和维护环节.     

基于PXI总线的某型导弹装备自动测试系统

导弹装备的自动测试可以提高部队现有装备的支援技术水平.为了测试导弹装备的工作稳定性,提出了一种基于PXI总线和虚拟仪器技术的国产某型导弹装备自动测试系统,实现了对该型导弹装备各部件的模块化、快速化和自动化测试.     

基于PXI总线的某型导弹装备自动测试系统

导弹装备的自动测试可以提高部队现有装备的支援技术水平。为了测试导弹装备的工作稳定性,提出了一种基于PXI总线和虚拟仪器技术的国产某型导弹装备自动测试系统,实现了对该型导弹装备各部件的模块化、快速化和自动化测试。     

基于某型控制盒单板测试仪通用测试系统的研究

为了满足控制盒单板测试通用化、模块化的要求,在自动测试系统的设计中采用了虚拟仪器测控技术,提出新的设计方案;讨论了自动测试系统的功能、硬件配置、软件模块化设计、软件流程和工作原理,设计开发了基于虚拟仪器技术的通用测试系统。该系统容错能力强,通用性好,操作方便,具有良好的扩展性,对提高武器系统的可维护性和可靠性有重要的意义。     

飞机平显自动测试系统的研制与开发

采用虚拟仪器技术研制了一种用于对飞机核心电子部件平视显示系统(平显)进行故障检测和维修的网络化自动测试系统。该系统采用分布式网络结构,硬件平台基于高可靠的PXI／CPCI,软件采用LabWindows／CVI开发,用户只需要通过简单键盘鼠标操作即可完成复杂现场测试。实际运行表明,该系统具有用户界面友好、操作方便等优点,提高了测试的效率和准确性,并有效节省了测试成本与维护费用。     

导弹自动驾驶仪测试系统的开发研究

基于虚拟仪器技术研制了导弹自动驾驶仪自动测试与故障诊断系统,系统以嵌入式工控机为核心,采用模块化仪器总线标准,集PXI卡、程控仪器和各种先进的测试诊断技术于一体,利用自动化测试设备的硬件设施,并开发了自动驾驶仪故障分析软件,实现了对故障的快速准确定位;实践证明,系统性能可靠,使用维护简单方便,能够全面准确地记录并分析导弹测试参数,提高了导弹参数测试精度和测试工作效率,具有较显著的军事和经济效益.     

基于PXI总线的导弹自动测试系统设计

导弹系统的研制过程需要模拟导弹的真实工作条件,对弹上各控制部件进行实时监测,因此提出一种基于PXI总线与虚拟仪器技术的导弹通用自动测试系统;论述了该测试系统的总体方案,系统的硬件配置和软件设计;重点阐述了使用虚拟仪器技术作为软件开发平台,实现弹上多路多种相关信号并行采集、实时显示、处理分析和数据回放功能,并针对不同型号的导弹形成测试程序集;现已成功应用于多型导弹的自动测试,为准确定位导弹故障提供了有效的解决途径,极大提高了导弹测试系统的快捷性、准确性和通用性。     

基于PXI总线的导弹测试与实验系统

根据当前导弹控制系统测试现状,提出了一种基于虚拟仪器技术和网络化的自动化测试与实验系统方案,探讨了PXI这一先进总线技术在导弹控制系统分系统测试的应用;利用虚拟仪器技术和PXI总线技术,组建高精度、多用途、具有自诊断功能的分系统测试与实验系统,系统基于模块化设计,具有良好的通用性和很强的可扩展性,能够完成对不同型号导弹的测试任务;结合网络技术,系统不仅可以用于教学实验中的教员演示实验、学生动手做实验方面,还可以提供远程监控和诊断功能。     

基于动态部分重配置技术的自动测试系统研究

为了在不中断自动测试系统运行的情况下,将实现不同测试功能的比特流文件下载到其板载FPGA中,对动态部分重配置技术进行了研究;研发了一套基于CPCI架构的测控应答机自动测试系统;自动测试系统利用动态部分重配置技术和PCI总线技术,由主控计算机软件将满足不同测试需求的部分重配置比特流文件通过PCI总线动态下载到板载FPGA中,且不影响测试系统的正常运行;测试表明利用动态部分重配置技术,自动测试系统可以将以往需要多块板卡才能实现的功能集成到一块板卡中,大大增加了系统的集成度,并有效降低了系统的硬件成本,同时也能够使自动测试系统具备在线升级功能,增加了系统的设计灵活性。     

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.     

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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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