大豆低聚糖纳滤连续浓缩过程的控制

提出了一种利用纳滤膜来连续浓缩大豆低聚糖的新工艺.介绍了20 t/h大豆低聚糖纳滤连续浓缩工艺流程及控制要求,设计了基于PLC的过程控制系统.控制系统结构采用Siemens的TP170B触摸屏作为人机界面,S7 200 PLC、DR 20调节器和MM 430变频器作为控制核心.通过在山东谷神应用结果表明,该工艺流程经济适用、运行稳定可靠、自动化程度高,能够满足连续生产的要求,提高了膜分离装置的运行效率.     

Profibus现场总线技术与PLC的配合应用

文章对连铸机控制系统利用Profibus总线技术将各变频器的控制通过总线来实现,不仅使原来繁琐的控制线路简化,仅仅一根总线就可以实现所有的控制功能;而且在实际运行过程中变频器相应时间快,运行准确可靠。这样既减少了设备故障率,提高了生产效率;又大量减少电机的消耗,节约了设备维修费用。介绍了炼钢厂连铸机利用DP现场总线通讯技术,通控制字/状态字实现PLC对变频器的启动/停止及速度控制等以及对变频器运行状态的监控。     

智能布料机控制系统设计与应用

本篇文章是作者对智能布料机自动控制系统的设计及应用方面的原理进行了详细的论述。采用简易优化的人机界面及PLC、变频器控制,对同一批次布料可生产多种规格不同数量的板型,具有操作高度灵活性;电机定位精准到毫米级,布料均匀度高;自动上料、自动清洗功能升级,降低现场工人繁杂工作量,提高生产效率。整条生产线可以不间断地进行自动布料,降低人工因素影响及人工成本。     

PLC变频器在桥式起重机中的应用分析

随着电力电子技术的发展,PLC、变频器等自动化产品在电力拖动领域得到了广泛应用。起重机械采用PLC一变频器调速逐渐得到推广和普及,PLC过程控制取代传统的继电一接触器控制逐渐成为起重机械电气控制的主流;用变频电动机或异步电动机取代绕线电机,再配合先进的现场总线技术和人机界面系统,提高了设备控制精度和稳定性,降低了故障率,且节能效果显着,易于检修维护,成为提高企业生产效率的好途径。     

M224半自动内圆磨床结构分析与研究

文章以M224半自动内圆密床为研究对象，采用“人机界面＋PLC＋交流伺服”的硬件实现方案，对磨床径向工作台（x轴避行了数控化改造；采用PLC通讯控制变频器的方案实现了对砂轮主轴的控制；并且对工件主轴、冷却泵的原控制方案进行了改进。实际使用情况表明，改造后大大简化了机床的结构，提高了机床的定位精度，并使机床具有了良好的操作性能。     

S7300控制系统及G120变频器在薄膜收卷机上的应用

本文主要介绍西门子S7-300控制系统及G120变频器在薄膜收卷机上的应用,包括PLC硬件组成,软件结构,收卷机,张力控制,变频力矩控制,以及profinet网络应用等,收卷机结构上主要由牵引辊,接触辊,中心动力辊等部件组成,中心动力组件通过电机与堵头连接驱动膜卷运转,传动部分均采用变频调速,结构如下图:收卷机电气控制主要由S7-300PLC,G120变频器,张力传感器,张力放大器,人机界面等组成,主控制器为CPU325-2PN/DP,采用ET200分布式I/O系统,系统使用PROFINET现场总线网络,将变频器,人机界面及PLC等连接在一起,实现实时控制与信息交换。     

原油加热燃烧器控制系统的设计及应用

针对采油一厂采油作业区的原油加热,设计改造了一种满足安全生产具有自动点炉的多功能燃烧器控制系统。系统采用PLC作为控制核心,以人机界面WINCC作为监视和控制中心,实现燃烧过程、安全检测和危险防范的自动化,避免了人工操作方式的弊端,保证了操作人员的安全性,实现了燃烧器的安全精确控制。     

浅谈ABB压传动装置中ACS6000及其应用

为保证轧钢系统中的大功率设备能高性能、高效率、高质量地生产,ABB公司推出了在功率、可靠性、开关速度、转换效率、成本等方面都有优异表现的ACS6000变频器作为解决轧钢系统节能环节的一个重要工具.简要介绍ACS6000变频器在轧钢系统中的硬件配置、应用控制和需要注意的问题.     

ABB变频器在发电厂热网疏水系统中的应用

文章介绍了火力发电厂中热网疏水变频器控制系统,详细描述了ABB变频器特性,介绍了变频器及DCS系统对热网疏水系统的控制方案、系统配置及操作说明。     

基于PLC和组态软件的连杆清洗自控系统

为提高汽车发动机连杆清洗效率和质量,利用装备替代人工清洗,本文介绍了发动机连杆清洗机自动控制系统的结构及控制系统的硬件和软件设计.发动机连杆清洗的控制系统以PLC为核心,以触摸屏为人机界面,通过在组态软件的统一规划下,能够对清洗液液位、温度进行实时监控和集中管理,实现了对发动机连杆清洗机的自动控制和各子系统的控制;实际应用结果表明,该自动控制系统能够准确定位和对清洗液温度的控制,并极大地提高了清洗的质量和效率.     

基于ARM的机组式凹印机色组人机界面系统设计

目的 根据机组式凹印机色组控制操作方便、快捷的功能需求,文中设计一款基于ARM的嵌入式色组人机界面系统。方法 在剖析电子轴控制系统结构组成的基础上,分析色组人机界面系统功能需求,提出基于ARM的嵌入式人机界面系统总体方案。利用Altium Designer软件对人机界面系统的硬件电路进行设计,利用Keil C软件对人机界面系统的软件进行开发,并对其性能进行实验研究。结果 经实验可知,人机界面系统具备显示、触摸操作、数据管理等功能,且触摸精度小于5个像素。结论 实验结果表明,文中设计的嵌入式人机界面系统可以满足机组式凹印机色组控制操作的要求。     

基于PLC的壁纸包装控制系统设计

针对传统的壁纸包装技术存在浪费人力和财力的缺点,分析了壁纸包装机的工作原理,在此基础上,提出了使用三菱公司FX2N系列的PLC作为系统的主控制器,并讨论了控制系统的硬件配置、输入/输出点分配以及软件设计方法。研究结果表明:应用PLC和人机界面进行壁纸包装机控制系统的设计,使得系统控制灵活,运行可靠,降低了成本,具有较好的实用性。     

Assessment of human–machine interface design for a Chinese nuclear power plant

A nuclear power plant (NPP) is a complex system but requires high reliability. The human–machine interface (HMI) design plays very important role in reactor safety. This paper describes an assessment on HMI design of a Chinese NPP, using a software system named Dynamic Interaction Analysis Support (DIAS). DIAS can give not only quantitative indices for dynamically assessing the HMI design, but also allow modify the values of these indices by taking into account human error probability during specified emergent operation procedures. The operation procedures dealing with postulated accidents and transients recorded from a full-scale plant simulator in the training center of a Chinese NPP were selected as references. According to the results of simulation and analysis, the potential problems in the HMI design and the operation procedures were detected. Suggestions to improve the HMI design and the operation procedures were addressed.     

Development of an advanced human–machine interface for next generation nuclear power plants

An advanced human–machine interface (HMI) has been developed to enhance the safety and availability of a nuclear power plant (NPP) by improving operational reliability. The key elements of the proposed HMI are the large display panels which present synopsis of plant status and the compact, computer-based work stations for monitoring, control and protection functions. The work station consists of four consoles such as a dynamic alarm console (DAC), a system information console (SIC), a computerized operating-procedure console (COC), and a safety system information console (SSIC). The DAC provides clean alarm pictures, in which information overlapping is excluded and alarm impacts are discriminated, for quick situation awareness. The SIC supports a normal operation by offering all necessary system information and control functions over non-safety systems. In addition, it is closely linked to the other consoles in order to automatically display related system information according to situations of the DAC and the COC. The COC aids operators with proper operating procedures during normal plant startup and shutdown or after a plant trip, and it also reduces their physical/mental burden through soft automation. The SSIC continuously displays safety system status and enables operators to control safety systems. The proposed HMI has been evaluated using the checklists that are extracted from various human factors guidelines. From the evaluation results, it can be concluded that the HMI is so designed as to address the human factors issues reasonably. After sufficient validation, the concept and the design features of the proposed HMI will be reflected in the design of the main control room of the Korean Next Generation Reactor (KNGR).     

基于PLC与触摸屏技术的瓦楞单面机控制系统设计

目的研究瓦楞单面机的自动化控制系统及人机界面的设计方法。方法基于PLC和触摸屏技术,制定单面机控制系统的总体设计方案,对原纸温度、上胶量及粘合压力等主要工艺参数进行控制并显示。结果实验验证了系统能对单面机生产进行自动控制,界面设计操作简便。结论通过对单面机主要工艺参数的自动控制,能有效降低单面机的成本并提高产品质量。     

A model for investigating cultural dimensions of communication in the car

This article explicates a theoretical framework which was designed to discover cultural features both within and about car communication. The general approach the framework provides has been used for basic research in the United States and China, and has proven useful to researchers and designers. We discuss specifically how the approach can develop and implement speech-enabled human–machine interface (HMI) systems to address cultural features of communication and interaction. The general framework unveils the cultural nature of human–machine communication, while it also opens the possibility of discovering new cultural dimensions and principles which designers may not yet have considered. The approach is adaptable to a variety of communication contexts, with our focus here on the in-car communication of drivers with a speech-enabled HMI. Specific findings are briefly discussed including implications for research and design.     

基于单神经元的啤酒灌装液位自适应控制算法

目的为了提高啤酒灌装生产线的生产效率,提升制酒企业的自动化程度,降低工人的劳动强度。方法根据啤酒灌装流程以及自动灌装生产线结构,提出一种基于PLC和触摸屏的啤酒自动灌装生产线控制系统,控制系统以松下FP-XHC60R PLC为控制器核心,以威纶维纶MT6070I触摸屏为人机操作界面,通过PLC实现执行机构的自动控制和反馈控制,由HMI人机触摸屏实现生产线运行的参数设置,并监控生产线的运行状态。在此硬件结构基础上完成控制系统软件设计,并根据单神经元控制理论,提出一种啤酒灌装液位自适应控制算法,以提高灌装液位控制精度。结果该控制系统结构简单,便于操作人员对设备进行人性化管理。结论所设计的啤酒灌装生产线控制系统具有生产效率高、高度自动化、运行稳定等优点。     

机械系统人机界面匹配优度的研究

文章运用多层次模糊综合评判的方法，提出了一种用于评价机械系统人机界面匹配合理程度的评价指标——匹配优度。在该评价指标中包含有机械系统的基本参数，即机械部件的重要性和操作频率、人体生物力学数据和人体参数的统计数据。在运用它对系统进行评价时，除能够得到系统的整体评价外，还能够分别给出手操作类、脚操作类、仪表类和座椅类等组成部分的评价结果。同时，运用匹配优度可以较好地构造系统的评价模型，使之能够完整地体现评价过程中的主、客观因素所起的作用     

Human–machine interaction theories and lane departure warnings

A technological race toward always ever-increasing automation is engaged, a race in which automation users are hardly considered. This explains why more automation is not necessarily for the best. A variety of human–machine interaction (HMI) theories co-exist. First, those HMI theories and predictions for lane departure warnings systems (LDWS, assisted driving automation) are described. Second, a synthesis of the key questions currently addressed by empirical data on LDWS is offered. Lastly, a new model of human–machine cooperation modelling is proposed. The model has been inspired by previous theories and empirical data collected with LDWS-assisted driving. Interestingly, automation such as LDWS seems to avoid the ‘ironies of automation’ with no negative effects on human performance. However, a major issue to be addressed is poor automation acceptance. While the focus was set on LDWS to offer a complete overview for this type of device, the model may be extended to other warning assistance devices.