基于计算机网络管理的高速公路上收费系统的建立

本文首先介绍我国联网收费所面临的问题提出实施"高速公路上收费系统网络架构"的必要性,然后具体介绍高速公路上收费系统网络的架构,详细介绍高速公路上收费系统网络的系统功能设计,介绍路网智能化收费系统的应用情况,包括取得的成绩和效益.     

基于嵌入式系统的机械车载监控终端研究

介绍了基于嵌入式系统的车载监控终端的研究,给出了系统总体结构和各模块的功能,介绍了系统的硬件设计,详细介绍了嵌入式系统中CAN总线的硬件和软件设计.     

仿生系统：一种进化仿真框架的简介

文章主要介绍了一种进化仿真框架——仿生系统SimBioSys,首先介绍了这种仿生系统的概念,其次通过介绍它的类关系和定义揭示了它的静态结构,最后提出这种仿生系统的动态循环结构,并简单介绍了仿生系统在科学研究中的应用。     

点焊机器人系统在一汽轿车生产线上的应用及经验

本文介绍点焊机器人系统在汽车生产中的应用,着重介绍点焊机器人系统的构成和控制方式,详尽介绍点焊机器人系统的应用经验,同时结合作者亲身经历,总结点焊机器人系统在使用过程中的注意事项。     

高可用性集群系统在烟草系统中的应用

介绍了传统的集群系统,并详细介绍了IBMHACMP高可用性集群系统在烟草系统中的应用。     

基于单片机的USB传输系统的设计与实现

本文介绍了一种基于SL8111HS芯片及单片机的USB传输系统;系统由单片机、USB接口控制器、高速RAM、串口等设备组成;首先分析了USB系统的通信协议,然后介绍系统的硬件设计,最后介绍系统的软件实现过程。     

脉冲发电机组计算机控制系统的研究

介绍了一种脉冲发电机组的计算机控制系统, 介绍了该系统的励磁控制系统、模式识别系统和工业控制网络, 介绍了该系统的软、硬件设计以及控制系统特点。     

基于ARM和Linux嵌入式系统的软件开发过程

介绍了嵌入式系统的基本组成,嵌入式系统的硬件开发过程,并结合实例详细介绍了嵌入式系统的软件开发过程.     

一种基于Linux嵌入式系统的防火墙的开发

介绍了一种基于Linux嵌入式系统的防火墙解决方案。文章首先简要介绍了嵌入式系统的特点,然后分析Linux内核中的防火墙实现方法,然后介绍该防火墙系统的硬件和软件结构,并详细阐述了该防火墙系统中的软件实现。     

嵌入式系统综述

以嵌入式系统的日常应用引入,从嵌入式系统的定义与组成入手,对嵌入式系统的发展近况进行深入的介绍,介绍嵌入式软件技术的主要发展方向,其中对嵌入式Web浏览器、嵌入式数据库与嵌入式移动数据库和嵌入式GUI系统进行着重介绍,并对嵌入式系统的未来发展提出展望。     

奇异摄动系统主导极点配置的一种方法

本文将奇异摄动系统看成是存在参数扰动的广义系统的一种特殊形式，然后利用广义系统特征结构配置来使广义系统的有限闭环极点尽可能接近奇异摄动系统的闭环主导极点，从而达到近似配置奇异摄动系统主导极点的目的。本文提供的算法是数值稳定的。     

NGN网络下的SIP视频会议系统设计与实现

在简单介绍SIP(Session Initiation Protocol)协议的基础上,详细说明一个基于NGN网络的SIP协议的集中式视频会议系统的设计与实现。该系统由会议管理系统、会议控制系统和会议终端系统三部分组成。给出了基于SIP的视频会议系统的设计,各个子系统实现的关键技术,并讨论了系统有待解决的一些问题。     

A ball and beam tracking and balance control using magnetic suspension actuators

A new ball and beam system is constructed using a pair of magnetic suspension actuators in this paper. The proposed system can be used not only as a control theory verification and practice platform, but also as an educational demonstration and training tool for system integration of electrics, mechanics and cybernetics. The proposed control system activates two magnetic suspension actuators on either side of the beam. The magnetic force, as a function of position and coil current, was measured and modelled by a quadratic function. The system mathematical model is derived by the Lagrangian function. For control performance, a single chip microprocessor as control kernel with basic electronic components is designed and implemented. The ball and beam system hardware as well as microprocessor-based control circuit is implemented and tested. The static and dynamic performance of the ball and beam system is tested with several different scenarios. The system operation on oscillatory stabilization and sinusoidal tracking is verified with excellent operational characteristics.     

基于单片机系统的液体点滴速度监控装置的设计

本系统设计是以AT89S52单片机为核心,以键盘及红外对射式传感器作为输入系统,以1602液晶显示屏及电动机作为输出系统的智能化输液控制及检测系统。该系统主要由水滴速度测试系统、水速控制系统、显示装置、单片机系统、无线传输系统、键盘和报警等系统组成。     

Metrological assurance at industrial enterprise: Problems and solutions

Conceptual and systematic issues regarding the design of metrological assurance system at an industrial enterprise are considered. The system is constructed as a part of quality management system of the enterprise; process approach forms methodological foundation in development and operation of the system. The processes of implementing metrological functions, as well as the system of enterprise standards regulating control mechanisms for these processes are described.     

Integrating faces and fingerprints for personal identification

An automatic personal identification system based solely on fingerprints or faces is often not able to meet the system performance requirements. We have developed a prototype biometrics system which integrates faces and fingerprints. The system overcomes the limitations of face recognition systems as well as fingerprint verification systems. The integrated prototype system operates in the identification mode with an admissible response time. The identity established by the system is more reliable than the identity established by a face recognition system. In addition, the proposed decision fusion scheme enables performance improvement by integrating multiple cues with different confidence measures. Experimental results demonstrate that our system performs very well. It meets the response time as well as the accuracy requirements     

Building a CIM system for compound plant: Utilization of distributed processing system

The position of a production management system in a computer-integrated manufacturing (CIM) system is to serve as the nucleus of the plant CIM system that connects the plant production to other departments such as marketing, research and development, and distribution departments. A production management system that integrates the flow of goods with information in a plant, and thus manages production in it, was developed as the first step toward application of CIM to a powder plant. The method of building a distributed system is one way to build a CIM system. This method creates a system in the required function units, which are connected by a network to expand the system function. It offers advantages in extensibility, flexibility, and rapid implementation.     

基于.NET的网上营业厅系统的设计与实现

为了提高业务系统的自动处理能力,以及服务的便捷程度,提出了基于.NET的网上营业厅的实现机制。以网上营业厅系统为背景,详细地阐述了其功能设计与安全设计。五大功能构成了整个系统的核心,是系统正常、有效、健康运营的基础;形式多样的安全措施又是系统运营的保障.。NET平台为Web应用系统提供了良好的开发环境和技术支持,建立网上营业厅系统大大提高了电信业的运营效率。这种优点已在实际运营中得到了验证。     

基于工控机的回转窑控制系统

本语介绍了一种用工业控制机构成的工业控制系统,它实现对系统的温度、电流及炉客转速的实时监测和控制任务。在系统的吕采用顺序联锁控制以保证系统政党工作,系统具有多种报警功能,能对电机过电流,炉管超温等进行报警。系统还具有数据记录及报表功能。用Ｗｉｎｄｏｗｓ９５作为操作平台,用ＧＥＮＩＥ软件对系统进行组态。     

Efficient methodology for multibody simulations with discontinuous changes in system definition

A new method is presented for accurately and efficiently simulating multi-scale multibody systems with discontinuous changes in system definitions as encountered in adaptive switching between models with different resolutions as well as models with different system topologies. An example of model resolution change is a transition of a system from a discrete particle model to a reduced order articulated multi-rigid body model. The discontinuous changes in system definition may be viewed as an instantaneous change (release or impulsive application of) the system constraints. The method uses a spatial impulse–momentum formulation in a divide and conquer scheme. The approach utilizes a hierarchic assembly–disassembly process by traversing the system topology in a binary tree map to solve for the jumps in the system generalized speeds and the constraint impulsive loads in linear and logarithmic cost in serial and parallel implementations, respectively. The method is applicable for systems in serial chain as well as kinematical loop topologies. The coupling between the unilateral and bilateral constraints is handled efficiently through the use of kinematic joint definitions. The equations of motion for the system are produced in a hierarchic sub-structured form. This has the advantage that changes in sub-structure definitions/models results in a change to the system equations only within the associated sub-structure. This allows for significant changes in model types and definitions without having to reformulate the equations for the whole system. R.M. Mukherjee is now at Jet Propulsion Laboratory, Pasadena, California