一个实用的冰箱流水线数据处理系统的设计与实现

文中介绍的一是一个实用的冰箱流水线系统的设计与实现。比较详细地叙述了系统的总体设计思想，模块结构和通信接口技术的一些关键环节，此系统在工厂自动化方面具有一定的推广价值。     

PLC在装订生产线上的应用

本文给出了ＰＬＣ在装订生产线上的一个应用实例,介绍了组成一个ＰＬＣ控制系统的一般方法和步骤。     

The Cost of Work in Medical Nursing

Abstract

The physiological cost of work was measured on the nursing staff of a general medical ward. Fourteen subjects took part in the study. Heart rates were measured during work and sleep on 13 nurses, and oxygen consumption measurements were made on 12, using the Miser Respirometer. In addition, maximum aerobic capacity was estimated on eight of the subjects

Mean heart rates during work were 93 ± SD 10 bt min^-1 significantly higher on the late than the early shift. The mean rate of energy expenditure was 147 ± SD 31 W. and was significantly higher in the morning than the afternoon or the evening

The mean relative work toad was 22% ± SD5%. The mean individual relative heart rate was 26% ± SD 9% and the mean ratio of work : sleep heart rates was 145 ± SDO-19 The findings placed medical nursing in the same category as light industrial work.     

基于控制网的装配流水线监控实现

基于罗克韦尔的ControlNet控制网,使用罗克韦尔软件,实现装配流水线的逻辑控制和上位监视。在罗克韦尔运动控制台上,通过连接在控制网中的两台ControlLogix控制器,使用RSLINX和RSNETWORKS FOR CONTROL NET软件,进行控制网组态配置;使用RSLOGIX5000软件,进行装配流水线的逻辑控制编程;使用RSVIEW SE软件,进行上位人机界面组态。实验证明,在控制网上实现工业生产过程的控制及监视具有广阔前景。     

PROFIBUS-DP网络总线用于轿车座椅装配线

本文以分布式I/O控制系统为模型介绍基于PROFIBUS/DP网络通讯的控制系统架构,阐述了PROFIBUS/DP控制系统的软,硬件设计思想及在轿车座椅装配线的具体应用.     

Safe Collaborative Assembly on a Continuously Moving Line with Large Industrial Robots

Robot safety standards defines Collaborative Operation as a state in which purposely designed robots work in direct cooperation with a human within a defined workspace. That is, an operator and an industrial robot complete assembly tasks at the collaborative workspace. A prerequisite to ensuring safety during all phases of operation is an understanding of the nature of hazards pertinent to collaborative systems. An automotive assembly station, where plastic panels are assembled on a continuously moving line, formed the basis for research operations meant to understand safety issues when a large industrial robot aids an operator in assembly tasks. This led to the development of a laboratory demonstrator whose design and functioning will be presented in this article. Additionally, the hazards identified during risk assessment along with measures to mitigate the associated risks will be presented in order to highlight the nature of hazards pertinent to collaborative systems.     

汽车发动机装配线上选瓦设备的计算机控制

该文概要地介绍了计算机控制在汽车发动机装配线中分级轴瓦中的应用,着重描述了其系统原理、系统组成、软件控制和操作步骤等。     

应用遗传算法解决装配线平衡问题

文章针对装配线平衡问题,提出了一种周期性自适应交换、变异遗传算法,通过实验求解表明,该算法是解决装配线问题的有效算法,很好地解决了简单遗传算法容易早熟收敛的问题,大大改善了简单遗传算法的性能。     

流水线联机故障自动检测系统设计

本文提出一种的联机故障自动检测系统,给出了该故障检测系统的总体设计结构,分析了其主要组成模块和实现的功能。针对其智能化的需求,首次将增量数据库技术应用于故障信息的存储和交互更新。有效地实现了检测系统的灵活、高效的工作模式。最后文章对联机故障自动检测系统的重要底层支撑模块——增量式数据库的实现进行了深入的分析和研究。     

汽车装配线的可视化仿真研究

由于装配系统仿真对象复杂以及传统仿真方法难以建立装配系统的仿真模型,因此该文提出运用面向对象的理论建立汽车装配线的可视化虚拟仿真系统.文中详细论述了实现该仿真系统的关键技术和流程,接着根据离散事件系统的特点介绍了装配仿真系统的仿真策略,最后以某汽车总装车间为例建立了装配线的可视化虚拟仿真系统.通过可视化仿真实现了车间的布局设计和生产过程的动态仿真,并依据仿真结果确定生产线的技术参数以决策生产.     

基于遗传的变速箱装配线平衡研究

给出了基于遗传的装配线平衡程序,在此基础上以某变速箱装配线为例,研究了变速箱装配线进行平衡的方法,采用特殊的遗传算子,对装配线进行平衡.平衡后可以使工作站数减少6个,各个工作站负荷更加均匀,为装配线的进一步优化提供技术依据,证明该算法效果较好.     

风扇马达装配检测线自动化设计研究

以风扇马达装配检测线自动化设计为研究对象,依托风扇马达装配检测线自动化系统机械构造设计经验,从风扇马达装配检测线自动化设计需求、设计思路、实现技术等方面出发,阐述了一种可自动识别与控制的马达装配检测线设计方案,以提升风扇马达装配检测能力。     

基于模糊控制的拉式策略在装配生产控制中的应用

利用模糊控制鲁棒性强的特点, 将其引入单产品装配线的生产控制系统中, 构造新的拉式控制策略. 在建立控制系统周期审查模型和完成控制器设计的基础上, 通过缩小变异范围改进遗传算法求解以极小化在制品量和投放波动为目标, 顾客满意率为约束条件的多目标规划, 从而达到优化控制系统参数的目的. 为考察模糊控制系统性能, 通过实例与多阶段定量在制品法(Constant work-in-process, CONWIP)、Kanban和一般拉式策略 (Generic pull, GP) 系统进行比较, 结果表明模糊生产控制系统不仅能维持较低的在制品水平, 更重要的是能维持较低的订单投放波动水平.     

基于PLC的电器装配生产线控制系统设计

以某电器生产厂家8工位电器装配生产线为例,介绍应用三菱PLC和FX系列变频器实现电器装配生产线自动控制的方法.     

Assembly Line Balancing Using Differential Evolution Models

There is a growing research interest on the application of evolutionary computation-based techniques in manufacturing optimization due to the fact that this field is associated with a plethora of complex combinatorial optimization problems. Differential evolution (DE), one of the latest developed evolutionary algorithms, has rarely been applied on manufacturing optimization problems (MOPs). A possible reason for the absence of DE from this research field is that DE was introduced as global optimizer over continuous spaces, while most of MOPs are of combinatorial nature with discrete decision variables. DE maintains and evolves floating-point vectors and therefore its application to MOPs that have solutions represented by permutations is not straightforward. This paper investigates the use of DE for the solution of the simple assembly line balancing problem (SALBP), a well-known NP-hard MOP. Two basic formulation types for SALBP are examined, namely type-1 and type-2: the former attempts to minimize the number of workstations required to manufacture a product in an assembly line for a given fixed cycle time; while the latter attempts to minimize the cycle time of the line for a given number of stations. Extensive experiments carried out over public benchmarks test instances estimate the performance of DE approach.     

变速箱多品种装配线信息管理系统

变速箱多品种装配线信息管理系统是由西门子可编程控制器S7-300及西门子MOBY识别系列产品——信息存储器、信息读写器和人机界面,构建出网络制造中的多品种信息管理的计算机系统。     

基于ControlLogix的"自动化组装线"机电综合实验模型的控制系统

介绍了为机械类本科生实践教学环节而设计的“自动化组装线”机电综合实验模型的控制系统。该控制系统以美国罗克韦尔自动化的Control Logix1756可编程控制器为核心，涵盖了基于Deviee Net现场总线标准的远程I／O、网络、气动、传感器及交流伺服驱动等技术领域。控制系统的设计包括硬件搭建、上位机软件组态和演示程序的编制。     

CC-Link现场总线在发动机组装线上的应用

结合国内一流水平的发动机组装线的实际情况论述CC-Link现场工业总线在Mitsubishi PLC中使用时的典型案例.     

基于Agent的可重构装配线制造执行系统

针对制造执行系统存在的问题,根据可重构制造模式的理念,设计基于CORBA和多Agent的可重构装配线制造执行系统的体系结构,实现制造执行系统的可重构性和可集成性,构建系统的IDEF0功能模型,给出Agent结构模型及装配资源聚类方法。实际应用表明该系统具有良好的实用性,能满足企业需求。     

基于ROCKWELL 3层网络架构的流水线控制系统设计

介绍基于罗克韦尔的NetLinx3层网络架构,研制出一套以Logix5561为控制核心,利用Flex I/O 1794进行输入输出,Powerflex40变频器和HMI实现工业上一个物料分拣、抓运、入库流程.介绍了系统的硬件、软件设计方法.整个操作过程可以通过RSView人机界面控制,本系统可广泛应用于教学实践当中.