LabVIEW+RTX实时弹载计算机监测系统设计

弹载计算机是导弹控制的核心,对弹载计算机进行功能验证和监测是保证其正常工作的基本途径。弹载计算机在运行过程中存在有大量的外部数据交互,因此全面可靠地对弹载计算机进行监测需要对运行过程的大量数据进行实时监测。采用基于LabVIEW的FPGA板卡和RTX实时系统,在Win-dows操作系统下构建了一套高实时性的监测系统方案,完成对弹载计算机的实时监测评估。     

面向弹载计算机的BIT技术研究

机内测试（Built-In-Test,BIT）技术是改善系统或设备测试性和维修性的重要途径。在对弹载计算机BIT技术特征进行研究的基础上,提出了弹载计算机BIT设计的基本准则,提供了一种典型的弹载计算机BIT设计方法,经实践验证该设计方法适用于多种类型的弹载计算机设备,故障检测率不低于90%,故障虚警率不超过2%,显著地提高了弹载计算机的可靠性、可测试性及可维护性。     

LabVIEW FPGA模块在飞控计算机测试系统中的应用

飞控计算机是战术飞行武器控制系统的核心。针对其接收发送数字信号的不同时序要求,利用LabVIEW FPGA模块生成飞控计算机测试系统中的测试激励信号,同时接收其数字输出响应,完成测试。详细介绍了LabVIEW FPGA模块的硬件接口设计与软件设计,实践表明应用LabVIEW FPGA模块能缩短系统开发周期,系统可靠性高,工作稳定,满足设计要求。     

地磁传感器在弹载测试系统中的应用

介绍了地磁传感器的工作原理、结构及其在弹载测试系统中的应用,针对弹载测试的特殊性,设计了一种基于薄膜线圈式地磁传感器的弹载测试系统,该系统具有误差不随时间积累、可靠性高、响应速度快等优点,简述了弹载测试系统的工作原理、系统硬件结构及薄膜线圈式地磁传感器的信号调理电路,经过实弹测试验证,该地磁式弹载测试系统能准确测量弹丸的加速度和转速的实际飞行参数。     

弹载指令设备自动老炼试验系统设计

针对导弹弹载指令设备可靠性试验周期长、人员工作负荷高的现状和型号研制效率需求,设计了一种以工控机为硬件核心、LabVIEW为软件开发平台的自动老炼试验系统,实现整个试验过程的自动控制、数据采集与处理、故障诊断与处理及数据保存与实时显示等功能,并以某型导弹弹载指令设备为实例,验证了试验系统的性能.应用表明,该自动老炼试验系统操作简便、工作稳定,降低了测试人员的工作强度,提高了试验效率和自动化水平,大大提升了型号交付进度.     

YH-7000VG型惯导与弹载计算机的数据通信设计

为了实现弹载计算机和惯导的高速数据通信,对数据通信的工程化电路进行了设计.对YH-7000VG型惯导的性能进行了分析,并根据仿真系统的需要进行了波特率设置.介绍了RS-232串行口电平驱动电路以及弹载计算机的软件设计,实现了弹载计算机的各项功能.试验表明,弹载计算机完成了空间运动参数的数据采集与处理,满足超声速导弹半实物仿真系统的需要.     

弹载数据记录器性能的优化设计与实现

针对弹载存储测试技术,对弹载数据记录器的经典工作模式做了阐述;与以往一些弹载数据记录器性能相比较,设计在原有基础上从硬件和软件及其工作模式方面做了一些优化;最后还阐述了对存储模块的防护技术.经过实践中的应用,证明本文所述数据记录器系统在工作性能上更加稳定和可靠.     

基于SoC芯片HKS6713的弹载计算机设计

弹载计算机是导弹控制的核心部件。为满足弹载计算机对重量、功耗和可靠性等方面的要求,提出了一种采用So C芯片HKS6713作为处理器的弹载计算机设计方法。从硬件设计和软件设计两方面进行了说明,并对研制过程中程序分区设计、A/D采集结果修正和隔离保护等关键技术进行了阐述。该计算机具有体积小、功耗低、功能丰富和应用简便等特点,对同类弹载计算机设计具有一定参考价值。文中设计的弹载计算机已经经过各种试验,并在系统中进行了全面测试,达到了系统要求的性能,证明此设计切实可行。     

基于电容传感器的塑膜厚度检测系统的研究

采用非接触式电容传感器、电涡流传感器组合系统获取检测信号,利用基于LabVIEW软件平台的计算机实现对塑料薄膜进行在线检测的工作原理,整个系统由测试单元、电机驱动单元、数据采集与处理单元组成.由于测试单元采用了电容、电涡流组合传感系统,信号的后续处理由基于LabVIEW软件平台的计算机自动完成,加速了测量过程.采用本系统取代传统的千分尺测量方法,可以使塑料薄膜厚度测量以完全智能的、实时的、非接触的方式进行精确测量.最后,通过比较组合测量系统与千分尺测量的测试结果,证明了该系统具有较高的精度,良好的可靠性与可行性.     

弹载计算机通用阻抗测试仪设计

针对弹载计算机类产品在出厂交付和故障排除中信号阻抗需要高效测试的要求,文章描述了一种通用阻抗测试仪的实现方法;利用ARM微处理器来控制继电器矩阵切换信号点,并通过配置不同的上位机软件实现了多品种弹载计算机产品的阻抗自动测试,提高了阻抗测试效率,同时避免了人工测试容易误操作的问题;经过某型号弹载计算机试用,该测试仪能够将阻抗测试时间缩短到人工测试的1/9,且全程测试无错误,达到了弹载计算机信号阻抗快速可靠测试的目的。     

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。     

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.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.     

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.     

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.     

Call for papers Special issue on Modeling and control technologies for civil,energy,and power systems

正The control of civil,energy,and power systems presents significant new challenges for modeling and control theory.The purpose of this special issue is to provide a forum for researchers and practical engineers to discuss the recent advances in modeling and control technology development for civil,energy,and power systems.Prospective authors are invited to submit their original contributions with the focus on theory or applications of modeling,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 and promote academic exchange between Chinese and foreign scientists everywhere.