一种开放的现代控制系统软件体系结构及其在火灾报警系统中的应用

就当前控制软件的设计提出了一种开放式的软件体系结构,适合于各种现代控制系统的软件开发。该体系结构应用了最新的OPC技术,可实现系统软硬件接口的标准化,达到即插即用;在高层应用中可使用各种先进的软件技术,同时介绍了该体系结构在火灾报警系统的控制软件开发中的应用。     

基于ARM和Linux嵌入式平台的故障录波器通信接口设计

针对传统的微机型故障录波器在硬件配置、成本及可靠性上的问题,设计了一种以ARM和DSP为系统硬件,Linux操作系统为软件平台的故障录波器结构,DSP用于执行计算密集型操作,ARM平台完成终端控制以及外部通信,形成相对精简优化的软硬件结构,详细研究了主机口HPI技术,实现了双核之间的命令控制和高速数据通信。     

基于ISS和硬件模拟器的协同模拟关键技术研究

提出一种在嵌入式系统软硬件协调设计中对系统功能进行验证的软硬件协同模拟方法．该方法使用指令集模拟器(ISS)和事件驱动硬件模拟器分别完成软硬件的模拟，并采用C 语言构造处理器的总线功能模型，实现软硬件模拟器的信息交互．重点讨论指令集模拟器、总线功能模型以及硬件模拟器协同模拟接口的设计与实现方法，同时还给出了软硬件模拟器之间的同步算法．     

Accurate Unix benchmarking: art, science, or black magic?

The author offers a simple mathematical model of the interrelation of hardware and software to illustrate the necessity of knowledge of, and control over, the system under evaluation. He presents a list of hardware and software variables in Unix systems that should be considered when running benchmarks and a set of guidelines to benchmarking technique. While Unix is used as the case study, most (if not all) of the unwritten rules generally apply to other operating system environments. The author applies these guidelines to various benchmarks to illustrate the need for proper technique     

微机控制水泥配料系统

通过对水泥生产过程中各工艺参数的信号分析，提出了以工业控制计算机为核心的自动配料系统的硬件软件设计原理，同时指出了提高系统测量精度的关键技术。系统的应用有助于提高水泥的产量和质量。     

闪光焊机电源的数字化控制设计

介绍了一种以80C196KC单片机为控制核心的闪光焊机电源数字控制系统的软、硬件设计。确定了电源的控制模型和主电路结构形式,以及控制系统的组成,并给出了仿真结果。     

基于PLC的智能温室综合控制系统的研发

对温室测控系统的总体方案进行分析设计,提出采用单片机和PLC串口通讯技术相结合的方式实现数据采集功能,用组态软件MCGS编写上位监控界面,与普遍采用的上位PC机和下位PLC采集数据的方式相比,系统实现更加简单、经济。调试结果表明：系统具有良好的人机界面,操作简单,运行可靠,易于维护。     

红霉素发酵过程的计算机控制*

本文论述了计算机控制技术在红霉素发酵过程中的应用，主要讨论与分析系统的硬件配置、管理控制软件的设计以及补料控制与模式识别优化技术的实施。     

Time Delay Compensation for Hardware-in-the-loop Simulation of a Turbojet Engine Fuel Control Unit Using Neural NARX Smith Predictor

Hardware-in-the-loop (HIL) simulation is an effective technique that is used for development and testing of control systems while some of the control loop components are simulated in a proper environment and the other components are real hardware. In a conventional HIL simulation, the hardware is an electronic control unit which electronic control signals are communicated between the hardware and the software. But, HIL simulation of a mechanical component requires additional transfer systems to connect the software and hardware. The HIL simulation can achieve unstable behavior or inaccurate results due to unwanted time-delay dynamic of the transfer system. This paper presents the use of Smith predictor for time-delay compensation of transfer system in the HIL simulation of an electro-hydraulic fuel control unit (FCU) for a turbojet engine. A nonlinear auto regressive with exogenous input (NARX) neural network model is used for modeling and predicting the FCU behavior. The neural model is trained by Levenberg-Marquardt algorithm and the training and validation sets are generated using the amplitude modulated pseudo random binary sequence (APRBS). The consistency of the experimental real-time simulation and off-line simulation shows the applicability of the presented method for mitigating the effect of unwanted dynamic of the transfer system in the HIL simulation.

     

基于虚拟仪器技术的蓄电池监测系统的设计与实现

介绍了一个基于虚拟仪器技术、实用的阀控铅酸蓄电池组监测系统,该系统可对分散在不同地点的设备实行统一的检测、参数记录和报表打印等日常管理工作。给出了系统的硬件组成及软件模块功能,并在此基础上,讨论了深入利用NI的DataSocket技术,组建基于Web的测控网络,通过Web服务器完成相关的测试功能,充分实现信息共享。     

全自动烟支物理参数检测及其控制系统设计

为了提高卷烟制造过程中的控制精度与质量稳定性,设计实现了烟支物理参数的在线检测,所测得的烟支物理参数包括:重量、长度、圆周、圆度、密度、湿度、吸阻、通风率等。在设计方案中从系统架构的角度设计了系统硬件和软件,以及软硬选择的细节问题。本系统在湖南常德卷烟厂进行了实际的测试和应用,对于烟支各个物理参数检测所得数据在允许的误差范围内,从而实现了系统多参数测量的功能。     

Verification of concurrent control flow in distributed computer systems

An approach to verifying control flow in distributed computer systems (DCS) is presented. The approach is based on control flow checking among software components distributed over processors and cooperating among them. In this approach, control-flow behavior of DCS software is modeled and contained in special software components called verifiers. The verifiers are distributed over the processors and consulted to check the correctness of the control flow in DCS software during its execution. Algorithms for deriving the verifiers are presented. This technique can detect global errors including synchronization errors as well as local errors. It can be used for sequential or concurrent software at various levels of details. Experiments show that using this technique requires no significant overhead.<>     

国产DCS控制系统在氧化铝循环焙烧炉中的应用

介绍了国产DCS控制系统在山东铝业公司氧化铝厂1920t/d氧化铝循环焙烧炉国产化项目中的应用。阐述了焙烧炉的工艺流程、DCS系统的硬件配置及软件组态,并对在相同工艺条件下所用两种不同DCS控制的系统优劣进行了比较。     

一种基于单片机和DSP的水声引信接收平台设计

提出了基于单片机和TMS320C54x相结合的双CPU水声引信共享软硬件技术方、案，设计并实现了硬件平台，编制了部分软件模块，正确分析了实测的目标信号，验证了硬件平台方案的可行性。该方案简单可靠，实用性强。     

An order of magnitude faster isosurface rendering in software on aPC than using dedicated, general purpose rendering hardware

The purpose of this work is to compare the speed of isosurface rendering in software with that using dedicated hardware. Input data consist of 10 different objects from various parts of the body and various modalities (CT, MR, and MRA) with a variety of surface sizes (up to 1 million voxels/2 million triangles) and shapes. The software rendering technique consists of a particular method of voxel-based surface rendering, called shell rendering. The hardware method is OpenGL-based and uses the surfaces constructed from our implementation of the Marching Cubes algorithm. The hardware environment consists of a variety of platforms, including a Sun Ultra I with a Creator3D graphics card and a Silicon Graphics Reality Engine II, both with polygon rendering hardware, and a 300 MHz Pentium PC. The results indicate that the software method (shell rendering) was 18 to 31 times faster than any hardware rendering methods. This work demonstrates that a software implementation of a particular rendering algorithm (shell rendering) can outperform dedicated hardware. We conclude that, for medical surface visualization, expensive dedicated hardware engines are not required. More importantly, available software algorithms (shell rendering) on a 300 MHz Pentium PC outperform the speed of rendering via hardware engines by a factor of 18 to 31     

A Real-Time, Hierarchical, Sensor-Based Robotic System Architecture

A robotic system architecture is presented and its real-time performance, when used to control a robotic gripper system for deformation-free handling of limp material, is evaluated. A major problem to be overcome has been the integrability and compatibility issues between various components of the developed system. The software and hardware protocols and interfaces developed to control and coordinate the subsystem operations and interactions are presented. The performance of the developed real-time, hierarchical, sensor-based robotic system architecture is found to meet and satisfy a set of system operational constraints and demands as dictated by the industry.     

通控设备一体化测试诊断平台设计与实现

针对指挥系统通信控制设备种类多,测试指标繁杂,测试资源难以集成的问题研发一体化测试诊断平台。首先进行通控设备测试诊断平台的系统总体设计;其次对其关键技术进行研究,主要:包括基于自环与模拟的通控机混合测试技术,基于"软件无线电"的电台综合检测技术,基于指挥系统拓扑结构的网络测试技术等;最后对该检测平台的系统软硬件实现方法进行简要介绍。部队应用表明,该测试诊断平台可实现多种通控设备的一体化综合测试与诊断,满足部队野战条件下指挥系统通控设备的测试诊断需求。     

A case history development of a foolproofing interfacedocumentation system

The authors discuss information transmission errors occurring between design engineers involved in software development and describe an interface design documentation system that can prevent them. The equivalence of human errors in software design and hardware manufacturing activities is established. The characteristics that must be included in an interface documentation system to prevent communication errors in software design activities, based on foolproofing principles that were identified for hardware manufacturing, are discussed. Utilizing these characteristics, an example of an interface documentation system for software products which control measuring equipment is presented. Its effects on the resultant number of communication errors between hardware and software engineers is subsequently experimentally evaluated     

基于UCOS和UCGUI的嵌入式数字示波器

提出了一种基于UCOS和UCGUI的数字存储示波器的软件时序逻辑状态机实现技术,硬件上采用FPGA ARM的结构,充分利用FPGA在逻辑控制、高速信号采集方面的优势,以及ARM核心在LCD波形刷新、人机接口以及通信协议处理的灵活性,在提高系统整体性能和可靠性的同时简化了系统的软件和硬件结构.     

计算机系统的可靠性技术

计算机系统在实际工业现场中可能遇到的各种干扰和自身的随机性故障、现场恶劣的环境有可能使计算机系统发生异常,严重时,甚至使计算机系统出现工作混乱,酿成严重事故。因此应采用软件、硬件技术,在提高硬件系统抗干扰能力的同时,利用软件抗干扰方法设计灵活、节省硬件资源的特点,使计算机系统在错综复杂的环境里能保证程序稳定运行,提高系统的可靠性。介绍了计算机系统的软件、硬件可靠性技术,并从永久性故障和暂时性故障两方面对几种双机结构的可靠性进行了研究,证实了任务分担结构在提高计算机系统可靠性方面的优越性。