台达变频器在纺织织带盘带机上的应用

盘带机是纺织织带成品分卷设备，需要使用到收放卷控制。本文基于台达变频器在盘带机上的应用案例，论述盘带机自动化系统设计调试过程以及遇到的问题分析。     

Coupled effect of heat input and beam oscillation on mechanical properties of alloy 718 electron beam weldments

Abstract

Autogenous full penetration electron beam welds were made on alloy 718 with and without beam oscillation technique. Weldments were subjected to two types of post-weld heat treatments: direct aging (DA) and solution treatment at 980°C followed by aging (STA). When the welds were prepared using different heat inputs in the welding processes with and without beam oscillation, the influence of beam oscillation could not be studied in isolation but the coupled effect of heat input and beam oscillation was studied. Laves particles were finer in size and lower in amount in unoscillated welds compared with those in beam oscillated welds subjected to DA condition. δ phase needles were observed around Laves particles in the welds subjected to STA condition. The amount of Laves particles was less and that of δ phase was more in unoscillated welds compared with those in beam oscillated welds subjected to STA condition. Unoscillated weldments exhibited longer fatigue lives compared with beam oscillated weldments in both DA and STA conditions owing to less amount of Laves in the former. Weldments in STA condition had longer lives compared with those in DA condition. The role of δ phase needles in fatigue life could not be identified.     

OPC技术在制药系统中的应用

针对药片包衣生产线特点,开发了制药监控系统;采用OPC技术,实现台达PLC与上位机wincc之间的通信：实际运行表明,所设计的制药监控系统具有自动化程度高、可靠性强和人机交互界面友好等优点。     

Studies of microstructural changes upon retrogression and reaging (RRA) treatment to 8090 Al – Li – Cu – Mg – Zr alloy

Abstract

Microstructural changes upon retrogression, and retrogression and reaging (RRA) treatment to 8090 Al – Li – Cu – Mg – Zr alloy in the peak aged (T8) temper have been studied by XRD and TEM. The variation of hardness with retrogression, and retrogression and reaging (RRA) has been measured to assess RRA behaviour. XRD studies exhibited all the phases that would be expected in the system. Retrogression primarily caused dissolution of matrix strengthening δ' precipitates in the solution. Reaging the retrogressed state caused reprecipitation of the δ' precipitates in the matrix. Retrogression and reaging (RRA) treatments retained the strength of the conventional peak aged temper, but TEM observations revealed some microstructural changes, such as growth of δ', T₁ and S' phases, reduction of the dislocation densities, and generation of more dislocation loops and helices.     

Concept,design, and energy analysis of an integrated power-to-methanol process utilizing a tubular proton-conducting solid oxide electrolysis cell

An alternative power-to-methanol process based on an integration of a tubular proton-conducting solid oxide electrolysis cell into a methanol synthesis unit is explained, energetically evaluated and technically presented. Being currently developed in the joint research project DELTA, the novel process has the potential for a significant increase in system efficiency, if the heat from the exothermic synthesis reaction can be utilized and/or kinetic advantages can be achieved.For the experimental proof of the concept and a comprehensive characterization of the process, a test platform is currently under construction. The design of the flexible test facility with the complex technical integration of both processes (electrolysis and synthesis) is described briefly. The chemical reactor, where electrolysis and synthesis are taking place, allows for an operation at temperatures (for electrolysis) up to 700 °C, pressures of 10 MPa and a current (across the electrolysis cell) of up to 100 A. Moreover, a precise pressure balancing system between both gas volumes, an axial temperature measurement and the possibility of regulating both processes inside the pressure vessel are pivotal properties of the test facility.     

台达产品Devlicenet与Ethernet网络在PLC制造厂的应用

本文主要介绍了台达工控产品（PLC、变频器、温控器等）在DviceNe网络及工业以太网方面的应用。     

基于软PLC和EtherCAT总线的DELTA2机器人控制系统设计与实现

由于传统PLC需要依赖于特定的软硬件,其硬件、软件系统封闭,系统开放性和扩展性不足,并且现场数据传输实时性不高。针对这些问题,提出了一种利用实时以太网EtherCAT协议通讯,基于PC的软PLC运动控制方案。该方案通讯总线采用分布式时钟技术,使用标准以太网协议,无需专用网卡,便能够实现多轴精确同步控制,适合高速机器人的高精度伺服控制。通过在DELTA2高速并联机器人上的测试分析,结果表明:该控制方案使机器人的运动控制性能得到了很大的提升。     

DELTA系统在P&H2800XPB电铲应用研究

在分析P&H2800XPB电铲原装行走系统存在缺陷的基础上,提出对其DELTA系统优化改进,分析了DELTA系统的优点,介绍了系统优化改进实施方案,并对优化改进前后的维修成本费用及设备可用率进行了对比,同时对优化改进后行走系统的运行情况进行了跟踪,得出DELTA系统不仅提升了设备可用率,节约了维修成本费用,创造了更多的经济效益,而且对电铲整体的运行状况起到了至关重要作用。     

基于蒙特卡洛法的DELTA机器人工作空间分析

DELTA机器人是实践中运用最成功的一种并联机器人之一,它依据独特的运动性能在并联机器人市场中占据重要的地位.文中利用蒙特卡洛法及位置正解对其工作空间进行了初步研究,借助MATLAB软件画出了其工作空间三维图及其各坐标轴剖面图,为后续设计打下了基础.     

基于虚拟技术的生产过程自动化实训室的建设

过程自动化实训室的建设是以昂贵的自动控制系统为中心,借助于网络技术、多媒体技术、虚拟技术,实现了由一套设备到多套设备的虚拟扩展,具有资源共享、可扩展性好、设备投资低、教学质量高、教学效果好等优点,可为相关的学校或企业进行职业技术培训提供借鉴。