混匀配料生产组织自动化研究

钢铁行业是我国国民经济的基础产业,是国家经济发展的重要支撑点.为了促进钢铁行业的进步与发展,要从根本上改变现有的混匀配料系统槽上进料生产组织效率与方法,积极探索新的高效集约化的槽上进料生产组织自动化形式,以适应新的形势和要求.     

烧结配料自动控制系统

介绍了张店钢铁厂新区烧结自动配料计算机控制系统,主要包括电气控制设计原理、系统的软件配置与组态以及控制功能的实现.     

综合粉配料自动控制系统设计及应用

配料站原来通过现场操作人员按照配比,人工调节给料机的给料量。其缺点是给料量的大小完全靠操作人员的经验来决定,配比精度较差,工作人员劳动强度大,自动化水平极低。该文设计了自动配料控制系统,介绍了配料控制系统的结构、工作原理。开发了PID配料控制算法。现场运行表明,该系统运行稳定,自动化程度高,维护方便,解决了原系统配料精度差的问题,提高了产品质量。该系统的成功应用,对同行业的生产进步将起到示范和推动作用。     

炭素阳极配料自动控制系统研制开发应用

通过对自动配方控制,自动配料控制,变频控制,拉糊小车控制的讨论,提出了完整的炭素阳极配料计算机集中监控方案,并在实践中取得了良好的控制效果,填补了国内行业计算机自动监控的空白。     

PLC在配料系统的应用

简要叙述了冶金工业中配料系统的工作原理及控制要求，介绍了PLC在配料系统中的应川，给出称量过程主要功能的实现以及设计中有关问题的处理方法。     

组合式故障诊断策略及系统研究

组合式故障诊断策略及系统研究杨龙祥，黄惟一（南京邮电学院南京２１００Ｑ３）（东南大学南京２１００１８）０引言目前国外测试诊断数字电路板有两大类基本方法：功能法和针床在能测试诊断法，而大多数系统采用针床在线测试诊断法。这两种测试诊断方法各有优缺点，但根...     

混凝土搅拌站单片机自动控制系统

本文对单片机应用在混凝土搅拌站自动控制上进行了介绍,详细阐述了混凝土搅拌站物料澈吸配料控制算法。     

船用自清洗滤器自动控制及故障诊断

船用自清洗滤器由多组滤筒、驱动电机和控制阀体组成,通过自动控制,可以在不中断燃油或润滑油过滤的情况下,自动完成过滤元件的清洗,自动监测滤器的工作状态。文章主要介绍空气反冲式自清洗滤器的结构特点、自动控制,阐述了具有自动控制功能的自清洗滤器的优点,介绍了自清洗滤器设备调试及运行中一些常见故障与诊断方法。     

配料自动控制系统设计

为了解决配料配制精确差，生产效率低等问题，这里对配料机自动控制过程进行了探究，利用现代控制理论设计了一个对配料生产进行自动控制的计算机系统，详细介绍了该控制系统的工作原理及控制接口电路。     

液体洗涤剂微机控制配料系统

采用集散控制技术研制了液体洗涤剂生产的微机控制配料系统,文章配合框图介绍其系统组成和功能特点,阐述称重方法及配料原理,并对配料系统运行方式及工艺流程进行说明。     

采样系统的自动化控制

详述一种采用工控机的自动采样系统,具体介绍了系统的组成、工作原理以及软件设计。该系统由于功能强大且切合实际,在电力、煤碳、水泥等行业得到了广泛应用。     

自动化仓库系统运行的优化控制

以一个典型的自动化仓库为例,根据其运行特点,提出运行控制的优化准则,分析确定仓库系统控制的优化控制数学模型,并运用有关原理,提出仓库巷道堆垛机及出入库系统货箱运行的优化控制程序。     

PROFIBUS总线在称重配料控制系统中的应用

本文通过PROFIBUS-DP现场总线在一个称重配料控制项目的应用情况,介绍了PROFIBUS-DP现场总线知识,设计中需要重点考虑的问题,以及现场调试中需要重点注意的事项。     

Design of due-date oriented look-ahead batching rule in wafer fabrication

In wafer fabrication processes, batch processing accounts for over 30% of the overall processing time. And it’s a trade-off between machine utilization and wafer waiting time. Therefore, batch machines have become one of the constraint resources during wafer fabrication. How to maintain the utilization and reduce the waiting time are important tasks for production control. Plenty of research in the past several years focused on the dispatching rules of batch processing. According to many researchers, look-ahead batch dispatching rules outperform MBS on waiting times and machine utilization. The look-ahead batching rules that have been developed are DBH, NACH, MCR, and DJAH. However, these rules do not take the due-date information of wafers into consideration, and can’t accelerate the wafer’s fabrication that will not be completed before the due-date. This study will develop a due-date oriented look-ahead batching rule, namely LBCR, that considers the due-date and expects to raise delivery rates and reduce the average tardiness. Firstly, this study will modify those batching rules to fit the manufacturing environment of wafer fabrication. There are serial simulation tests on those batching rules under various kinds of factors in terms of environment, including traffic intensity, product numbers and product mix rate. Finally, this study will compare the five batching rules on different performance indicators. After the simulation and statistic analysis undertaken, LBCR does outperform other batch dispatching rules on due-date related performance indicators, such as tardy rate and average tardiness.     

Automated battery test system

Battery testing is required for a wide range of applications. This includes quality assurance, design verification and performance assessment purposes for battery manufacturers, validation purposes for battery users, and battery behavioural research purposes for engineers developing behavioural prediction algorithms. Regardless of the application, determining the behavioural characteristics of batteries is a non-trivial problem. The electrochemical processes of a battery are complex, involving many parameters that are non-linearly interrelated. Therefore it is important that a test system designed for investigating battery behaviour provides accurate and reliable control and data acquisition. Manual testing is a labour intensive and time-consuming process. Automated testing can alleviate the labour requirements, with the added advantages of limiting human error (through limited human involvement), maintaining consistency between tests and providing flexibility in test conduction time and test routine.

This paper presents the architecture of an automated battery test system. The paper begins by providing details on battery testing procedures. A typical test cycle, where the battery passes through all operating phases of charge, float charge and discharge, is described. The battery testing technique of accelerated thermal ageing, a special case of cyclic testing, is also described. This allows the identification of the parameters that are to be acquired and controlled and hence provides the specification for the battery test system.

A specific battery test system solution is presented, which was designed for conducting valve regulated lead acid battery behavioural research. The system employs commercial off the shelf (COTS) components. Versatility is a key attribute of the system. This versatility extends from the ability to accommodate various battery configurations (different number of blocks per string and number of strings) and battery types (single cells through to mono-blocks) to the ability to vary the way the test is conducted and the criteria for data acquisition.     

面粉厂配麦控制系统

分析了配麦仓进料工艺流程，论述了可编程控制器(PLC)及微机在面粉厂配麦控制系统中的应用，结合配麦工艺流程中的一个控制部分，提出了用PLC进行控制、用微机实现管理的设计思路及软件设计方法。     

自动导引车路径跟踪和伺服控制的混合运动控制

对受到非完整约束和动力学影响的自动导引车(Automated guided vehicle,AGV),提出一种包含路径跟踪和伺服控制的混合运动控制模型。为消除AGV位姿偏差,在速度和加速度约束下,基于多步预测最优控制和智能预测迭代控制的路径跟踪技术,输出纠偏协调性最优的有限速度差控制量,并根据该控制量和AGV运行速度设置两驱动轮的目标速度。为消除驱动轮速度误差,以路径跟踪所需的伺服控制能力为决策偏好,采用多目标遗传算法优化伺服控制器的PID参数,保证两驱动轮的实际速度满足路径跟踪要求,并根据系统响应性能反馈速度和加速度约束。AGV路径跟踪试验表明,该混合运动控制模型可匹配路径跟踪技术的位姿纠偏能力与伺服控制技术的速度纠偏能力,有利于实现AGV运动性能的整体优化。     

动态配料系统的控制算法与仿真研究

通过对混凝土搅拌站动态配料系统的控制过程进行分析,依据动态配料称重系统和定量控制相结合的思想,在系统动态称重配料过程中引入泛逻辑学理论,设计了泛逻辑智能控制器。MATLAB仿真表明其控制器具有响应快、超调小、稳态精度高的优点。与PID控制算法比较,该系统的配料精度和速度都达到要求,整个系统的效率也得到了提高。     

基于现场总线的铜鼓风炉配料控制系统

根据铜鼓风炉配料系统的特点,对块状物料选用料斗秤静态计量,湿粉状物料采用全悬浮式的电子皮带秤动态计量.在此基础上建立起分布式现场总线控制系统,选用性价比高的SIEMENS PLC作为主控制站,由PLC控制给料设备,利用PROFIBUS-DP总线技术将分布的设备连成整体,采用组态软件对系统进行实时监控,实现了微机自动控制...