水声装配试验生产线异构数据采集系统设计

为解决水声装配试验过程中数据采集和管理困难的问题,在分析水声装配试验流程基础上,针对需要采集的数据特点,提出一种基于工作流程的装配试验数据采集方法,建立了水声装配试验生产线的数据采集系统,并通过数据库软件开发进行了工程应用,提高了水声装配试验生产线的数据采集数字化比率及生产效率。     

面向MES的生产线数据采集系统的研究

为满足生产管理与在线监测的需要,设计并实现了一个面向MES的生产线数据采集系统；该系统采用了一种基于PROFIBUS-DP和OPC技术的数据采集方法,实现了现场采集数据的高速及稳定的传输,保证了不同设备之间良好的兼容性；用户可以通过OPC客户端完成对生产线状态的远程监控,当采集到的参数超过设定的阀值时,系统可以自动报警并做出相对应的处理；经过试验表明,该系统各项性能良好,已经实现MES底层硬件和软件的深度融合,在生产线监控方面有着很重要的应用价值。     

基于GE Fanuc Proficy 在烟草制丝线上位监控系统的应用

本文介绍了GE Fanuc Proficy iFix4．0,Proficy iHistorian3．0,Terminal Server技术在在烟草制丝上位监控系统中的应用,实现烟草制丝生产过程的集中监控,生产线实时数据采集和显示;实现组织生产功能、远程监控功能、配方下达功能和其它功能。通过由生产管理、工艺质量管理、设备管理、系统安全管理等几个部分组成制丝生产线管理系统,以满足各层次实时了解生产过程相关需求。     

汽车焊装生产线监控系统的数据采集与传输

本文介绍了汽车焊装生产线监控系统中数据采集与传输子系统的设计方法，该数据采集与传输系统采用层次结构，包括CompoBus/D设备网，RS－422通信接口标准，主机链路（HostLink)通信协议，局域网等多种技术，建立的系统能实时获取车间的生产和设备状态，保证数据的安全传输，实验表明该系统抗干扰能力强，且易于扩展和维护。     

数据采集系统中Windows CE.Net的几种外设接口编程方法

嵌入式操作系统Windows CE．Net在数据采集系统中有广泛的应用前景．本文对于数据采集系统比较重要的串口通讯、外部10中断处理和网络接口的三种数据采集传输方式．如何在Windows CE．Net中实现和优化进行了分析。本文还介绍了Windows CE．Net的几种接口方式在脑电波采集系统的应用．并给出了非标准驱动程序的开发方法。     

嵌入式系统原理及应用

为了实现森林资源数据采集的全程无纸化作业，提高数据采集效率．本文研究开发了基于PDA的森林资源数据采集系统．从系统开发平台与开发工具的选择、系统榘构与功能、实现的关键技术等方面进行了详细的介绍．重点研究了客户端与服务器之间的无线网络模式下数据传输的交互技术。     

复合故障跟踪系统在莱钢中型H型钢生产线中的应用

介绍复合故障跟踪诊断系统在莱钢中型H型钢生产线中的应用,包括系统组成结构、数据采集与存储、报警与故障记录等.     

基于维护计划的卷烟生产线设备运维管理系统

介绍了一个基于维护计划的卷烟生产线设备运维管理系统,分别从系统功能模型、计划业务流程等角度描述了系统的设计思想。并阐述了系统涉及的设备润滑计划制定、派工、运行维护数据分析、系统开发与应用等关键技术。开发的系统具有一定的可集成性、可扩展性和可重构性,与移动通讯技术、数据采集技术相结合,集成在制造执行系统中,可以实现卷烟生产企业制丝、卷包生产线的实时设备运行与维护保养管理。     

基于Labview的咖啡机性能检测系统设计与实现

设计了基于咖啡机生产线末端的在线检测系统,旨在对成品咖啡机按预定的工艺流程对其各项性能参数,进行全方位的测试。文中详细分析了该检测系统的系统要求和产品测试工艺流程,设计了基于Labview的系统控制软件和操作界面,实现了实时数据采集、数据分析处理、检测达标判定和产品数据的安全保存。经过生产现场实际运行,证明该系统满足了工业检测要求,提高了检测效率,保证了与生产线上的产品同步在线检测。     

热水瓶温度检验过程中的自动控制

本文介绍了热水瓶生产线上的自动测温控制系统。该系统由一台CAC-3型微电脑,扩展接口,温度转换,数据采集程序等组成。对其他需要自动测温的场合也完全适用。     

装配生产车间制造执行系统的设计

制造执行系统(MES)是制造企业中面向车间层的管理系统,将企业资源管理系统与车间生产现场设备控制有机联系起来。结合MES系统设计开发实践,对装配生产线配置、物流和数据流程作了深入分析,并就装配生产车间MES系统的体系结构和功能结构等进行介绍。     

面向工厂的网构软件体系结构研究

利用网构软件的目标层、控制层和数据整合层的层次结构做为基础,提出一种以工厂建模方法的网构软件体系结构。以流水线的方法进行指导,并以一个远程教育集成系统为例,分析说明了该结构的应用方法。     

利用 WebGL 技术实现机房动态虚拟装配设计的可视化

本文设计并实现了一个面向机房的动态虚拟装配系统.该系统将传统的三维虚拟装配分解为二维装配和三维可视化两部分.在二维装配阶段,用户只需简单的交互操作就可完成机房的装配,配置结果记录在系统动态生成的配置文件中;在三维可视化阶段,系统根据配置文件可视化装配结果,实现虚拟装配.这种动态虚拟装配的架构有效提高了装配的效率,使装配更简捷、修改更容易.此外,该系统采用 WebGL 技术实现可视化,使得该系统的操作可全部在浏览器端完成,系统的发布和使用更加便捷.     

Optimal architecture configuration of manufacturing floor control systems

A manufacturing control system configuration is defined by the number of parallel assembly cells slaved to a specific superior microprocessor, their superior microprocessor, and the associated microprocessors performance capacities. The above-mentioned items of configuration were explored in this research to derive their effects on the efficiencies of manufacturing cells. The manufacturing cells are represented in this research by pneumatic motors assembly cells. A knowledge base and inference algorithms were developed and programmed to explore the effects of a large variety of architecture configurations on cells efficiencies. The achieved numerical results lead to the conclusion that exponential correlations characterize the interrelationships between assembly cell unutilization and architecture configurations parameters. Since exponential correlations characterize the interrelationships between assembly cells unutilization and architecture configurations parameters, an optimal architecture configuration is defined by three conditions, which match the beginning of the flattened parts of the exponential curves: (1) If the number of slaved assembly cells is considered, the optimal configuration is achieved when an additional slaved assembly cell results in a most significant reduction in assembly cells efficiency. (2) If the number of superior microprocessors is considered, the optimal configuration is achieved when an additional superior microprocessor does not result in a significant reduction in assembly cells unutilization. (3) If microprocessors capacity performance (bits/sec) is considered, the optimal configuration is achieved when additional capacity performance cannot reduce the assembly cells unutilization. Computer runs were performed to evaluate the optimal configurations. The developed knowledge base and inference algorithms were defined and programmed in generic terms and can be implemented in a large variety of systems. © 1996 John Wiley & Sons, Inc.     

基于ARM Cortex-M4的构件化汇编框架的研究

规范易用的汇编框架与样例是微处理器深层次应用开发的基础,但汇编编程复杂,并且目前针对32位ARM Cortex-M4的汇编程序资料和样例程序非常匮乏,学习难度大,开发工作困难重重。在深入分析ARM Cortex-M4汇编指令系统和寻址方式的基础上,以NXP半导体公司发布的Kinetis K(KK)系列MCU为蓝本,根据软件工程思想和构件设计理论,提出层次架构的工程框架建模思想,并构建基于ARM Cortex-M4内核的构件化汇编框架,据此制作GPlO驱动构件。指示灯闪烁样例工程的设计及测试结果表明了汇编框架规范、实用、易用,能降低嵌入式汇编语言的学习难度。框架能为业界基于ARM Cortex-M4的汇编开发提供参考。     

直升机升力系统数字化装配设备设计

针对直升机升力系统手工装配质量不稳定、效率低等问题,提出基于6-PUS并联机构的数字化装配设备方案,进行机构构型分析、运动学建模与分析、误差映射分析等,设计用于直升机升力系统装配的6-PUS并联机构。面向装配精度需求,研究关键零部件的加工、装配精度设计及分析技术。分析结果表明该机构可用于直升机升力系统的数字化装配,代替人工操作,提高装配质量。     

Utilizing variant differentiation to mitigate manufacturing complexity in mixed-model assembly systems

A measure of product variety induced complexity has been proposed for mixed-model assembly systems with serial, parallel and hybrid configurations. The complexity model was built based on the assumption of identical parallel stations, i.e., same product variants are produced at all parallel stations in the same volume and with the same mix ratio. In this paper, the existing complexity model is extended to general mixed-model assembly systems with non-identical parallel stations in the presence of product variety. Then it is discussed that how to reduce the system complexity using the variant differentiation, based on which a mathematical formulation is developed to minimize the complexity of a mixed-model assembly system. The formulated problem is a non-linear programming problem and then solved by genetic algorithm. Last the developed complexity mitigation model is applied to the configuration selection of assembly systems, i.e., to identify the system configuration with the minimum complexity.     

New methodological framework to improve productivity and ergonomics in assembly system design

This work analyses how ergonomics and assembly system design techniques are intimately related. It also develops a new theoretical framework to assess a concurrent engineering approach to assembly systems design problems, in conjunction with an ergonomics optimization of the workplace. Its purpose is to provide professionals with a new and detailed approach to assembly system design procedures that includes ergonomics issues.The methodological framework offered takes into account technological variables (related to work times and methods), environmental variables (i.e. absenteeism, staff turnover, work force motivation) and ergonomics evaluations (i.e. human diversity) to create a comprehensive analysis.At conclusion of the study, the work reports data and insights from two real industrial cases, where an advanced simulation software is used, to validate the procedure and support methodology applicability.

Relevance to industries

This work provides an extremely valuable methodological framework to companies who recognize the link between assembly and ergonomics. The methodology underlines the necessity to analyze and classify the assembly system layout configuration in relation to both technological and environmental parameters- as reported in the framework.     

Automatic generation of assembly system configuration with equipment selection for automotive battery manufacturing

High power and high capacity lithium-ion batteries are being adopted for electrical and hybrid electrical vehicles (EV/HEV) applications. An automotive Li-ion battery pack usually has a hierarchical composition of components assembled in some repetitive patterns. Such a product assembly hierarchy may facilitate automatic configuration of assembly systems including assembly task grouping, sequence planning, and equipment selection. This paper utilizes such a hierarchical composition in generating system configurations with equipment selection for optimal assembly system design. A recursive algorithm is developed to generate feasible assembly sequences and the initial configurations including hybrid configurations. The generated configurations are embedded in an optimal assembly system design problem for simultaneous equipment selection and task assignment by minimizing equipment investment cost. The complexity of the computational algorithm is also discussed.     

基于VRML-JAVA的虚拟现实及其协同环境的开发

虚拟现实技术对于制造业信息化有着重要意义。为建立开放技术标准之上的可视化装配系统,该文对基于VRML-JAVA的虚拟现实技术在工程设计领域的应用进行了研究,提出一种新型的Web环境下3D交互仿真结构,复杂的运算和仿真在服务器上进行,从而实现服务器端装配模型和客户端显示模型的分离。并在此基础之上提出协同环境开发的系统结构。该模型不仅可用于网络环境下的可视化装配,也适合于其他领域基于Web的科学可视化。