活套控制技术及应用

以液压活套为例，论述了活套的控制原理与控制过程，推导出了活套转矩控制与角度控制的计算公式，在此基础上得出了活套控制框图。     

设计阶段的投资控制

设计阶段是项目投资控制的关键。在分析了国内设计阶段投资控制现状的基础上，着重介绍了设计阶段近控制投资的几种方法。     

鞍钢2 130 mm连续退火炉控制功能简析

对鞍钢2130mm连续退火炉控制系统进行了简要介绍,包括设备组成及各段控制技术等。分析了所采用的各项先进技术的特点,说明了各段控制功能,介绍了连续退火炉投产后取得的效果。     

浅析过程质量控制

从实际出发对过程质量控制的要点进行了分析阐述，对影响过程质量控制的文件控制、物流控制、设备控制、特殊过程、技术检验等几方面做了综合性的论述。     

钢铁产品的质量控制

阐述了钢铁产品质量控制的内函。根据钢铁产品的质量环 ,对其产品质量形成的主要环节 ,概述了质量控制的要点 ,即控制原则和欲强化或有效地进行质量控制 ,应采用的方法、途径。强调质量控制是质量管理中永无休止的活动 ,随着产品的更新 ,顾客需求的增长 ,质量控制的手段 ,方法将随着提高     

本钢2300mm热轧AWC控制简析

全面、系统地对本钢2300mm带钢热连轧生产工艺过程中,带钢宽度控制的起因以及影响最终产品宽度的要素进行了介绍,并对当前使用的自动宽度控制系统的设计进行了介绍,给出了控制系统原理图、可实现的程序框图及控制策略应用。结果表明,该方法能有效地控制产品宽度。     

旋涡柱连续炼铅新工艺配料精确控制系统设计

介绍了铅精矿的精确配料在旋涡柱连续炼铅新工艺及控制系统的配置,阐述了常用的配料控制方案在实际生产中存在的问题,以及如何在实际生产中实现铅精矿的精确配料控制。     

精轧机架间冷却水阀的改造

针对宝钢分公司2050mm热轧厂精轧机架间冷却水阀在实际运行中存在的性能和维护问题,提出了改进设计方案.通过建立其数学模型,用Matlab软件的Simulink工具箱对其进行仿真分析,对所设计水阀的控制参数进行了优化,并对根据仿真结果研制的新型的机架间冷却水阀上机试用的情况进行了分析.试用结果证明新研制的冷却水阀满足了精轧机轧制温度控制的要求,在性能和维护方面达到了预期的效果.     

浅谈成本管理系统控制

论述了成本管理系统控制的基本原则、成本管理系统控制的方法及成本管理系统控制的途径，认为成本管理系统在企业内是一个可控制系统。     

矿山工程设计造价控制方法初探

简要介绍了控制工程造价的主要方法以及影响投资的主要因素。     

房地产项目成本控制分析

成本控制和管理历来是房地产开发项目的重心.通过分析成本的来源,结合实践从五个关键控制点展开论述,即土地开发及相关费用控制、规划设计控制、合同控制、工程预(决)算控制、甲供材料控制.     

电厂锅炉启动操作法的改进

通过对锅炉启动过程中参数控制的难点进行分析，总结出了“机组并网前通过控制燃烧强度来控制主汽温度、机组并网后用减温水来控制主汽温度”的启动操作方法，并配合以油枪喷嘴口径调整，基本解决了锅炉启动过程中参数控制难的问题。     

脉冲燃烧控制系统在台车式热处理炉上的应用

详细介绍了脉冲燃烧控制系统的配置、台车炉的燃烧控制原理和自动控制原理、脉冲系统的优点等.     

模糊神经网络在制氧厂压力调节系统中的仿真应用

为了更好解决气压控制中存在的问题,本文提出了把智能控制应用于气压控制系统中,最后将此控制器应用到气体压力调节控制系统中,并将其与PID方法和模糊控制方法进行了仿真比较研究,从仿真结果表明,该控制器有较好的控制性能。     

包钢酸洗冷连轧机组自动化控制系统简介

介绍了包钢酸洗冷连轧生产线的生产工艺和自动化控制系统的构成,该自动控制系统采用了西门子公司SIMATICTDC硬件系统、S7-400系列PLC控制器,画面操作显示采用WINCC,软件方面应用了西门子公司开发的扩展秒流量、AGC厚度自动控制、平直度控制、动态变规格、神经网络等多项技术,具有很高的自动化水平。     

加强内部会计控制的思考

内部会计控制对于规范会计行为，保证会计信息质量，纠错防弊，保护资产的安全完整具有重要意义。针对目前因内部会计控制存在的控制制度内容不完善、控制体系不完整而出现的会计信息失真、内部管理失控的现象．提出应建立健全授权批准控制、不相容职务分离、预算控制等制度，同时提出了内部控制制度应达到的目标、建立的体系及遵循的原则。     

Modernization of the control system and the electrical equipment of DSV vacuum arc furnaces

The results of modernizing one of the DSV-3.2-G1 arc furnaces at OAO Elektrostal’ Metallurgical Works are presented. New automatic control system ACS DSV-3.2 with functions of maintenance, control, and correction of the main technical parameters of vacuum arc remelting is created. The electric furnace is equipped with a modern visual control system for a heat and a unique inert gas (helium) supply system. The rod motion drive is replaced by a modern drive with frequency control of its motion velocity. New control cabinet and desk made of modern elements are mounted. Melting of a pilot series of EP-718 alloy ingots supports the high quality and reliability of the new control systems.     

Field evaluation of the efficacy of the fenbendazole slow-release bolus in the control of gastrointestinal nematodes of first-season grazing cattle

The ability of fenbendazole slow release bolus (Panacur SR Bolus, Hoechst) to control gastrointestinal parasitism in calves during their first grazing season at pasture was evaluated in two field trials. The infection level on both investigated farms was low and the control animals did not develop parasitic gastroenteritis. However, it was possible to demonstrate significant differences in the parasitological and biochemical parameters between the control and treated groups during the grazing season. Faecal egg counts and blood pepsinogen levels in the control cattle at both trials sites were significantly higher than those of the bolus-treated cattle.     

Effect of gut transposition on the expression of the endocrine gene neurotensin

PURPOSE: The purpose of this study was to evaluate joint position sense (JPS) in patients with posttraumatic glenohumeral instability. MATERIALS AND METHODS: In 28 patients with posttraumatic instability and in a matched control group of 30 subjects proprioception capability was evaluated. For documentation of proprioception an angle reproduction test (ART) was performed with which joint positions sense (JPS) was measured for abduction, flexion, and rotation in three angles each. RESULTS: In both groups there was a significant better JPS with visual control than without. In contrast to the control group the patients were not able to increase angle reproduction capability without visual control when comparing positions below shoulder level with positions at or above shoulder level. When comparing the patients to the controls there were differences in most of the ARTs with worse results in the patient group. These differences were significant in 150 degrees flexion with and without visual control, in 150 degrees abduction without and in 100 degrees abduction with visual control. For rotation there were trends for almost all joint positions, however, the differences were significant only in the -45 position. When comparing the noninjured contralateral shoulder of the patients with the control group, there still were differences. Again these were not in all joint positions significant, but significant worse JPS could be demonstrated in 150 degrees abduction without visual control, 50 degrees flexion without visual control, -45 degrees rotation without and 0 degrees rotation with visual control. CONCLUSIONS: A proprioceptive deficit can be documented in patients with posttraumatic glenohumeral instability. This may be one reason for permanent instability. The contralateral joint also shows reduction in joint position sense. For consecutive treatment as well as for rehabilitation both shoulder joint should be addressed.     

八钢小型材厂的活套自动控制

本文介绍了八钢小型材厂的活套自动控制方法。通过控制流程,总结出了活套调节的一般方法。