查询词典 process control

The author briefly introduces the technological flow,composition,features and technicalrequirements of DCS and FF instruments,with the emphasis on the description of design and debugging of the process control systemof carbinol DrodUCtion,including the architecture of the control system,system configuration of using Control Builder F （V7.1）soft—ware platform,the configu ration of instrument function blocks and the program loading and debugging process

作者简介了甲醇生产的工艺流程、DCS和FF仪表的构成、特点及技术要求；重点描述了该甲醇生产过程控制系统的设计和调试，包括控制系统的结构、采用Control Builder F（V7.1版本）软件平台的系统组态、仪表功能块的组态和程序加载调试过程。

A close-loop control system including cutting process control was designed to accomplish adaptive control of constant force cutting process .

针对恒力切削过程自适应控制，设计了包括切削过程的闭环控制系统。

Acceptance Criteria Activity Duration Estimation; Activity Definition; Activity Sequencing; Addenda Approved budget Arbitration Award of Contract ; Award Criteria Audits Balanced Matrix; Baseline Bill of Quantities Brainstorming Characteristic Checklists civil engineering civil building Claims Clarify Closing Communication Management Communications Planning Communications Skills Communication channels or paths Completion Computer-based Concrete structure Conditions of Contract Conflict Management Contract Management Contract administration Change Control Contract Closure Contract file Contract agreement; Contractual obligations Contractor Contractor's Representative Construction Management Planning Contract Price Control Chart Cost Estimating; Cost of Quality Cost Control Cost Budgeting Cost Management Co-operation Failure costs Critical Path Feedback Fixed-price Fossils Force Majeure Daywork Functional Organization Decision; Fundamental Tenets Decision Tree Defects Liability Definitions Delphi technique General Rules Deliverables General Provisions Deviation; Generation Direct Costs Discounted cash flow; Dissemination Highway engineering; Discharge Human Resource Management; Disputes Human Resource Planning Drawings Hydraulic engineering; Hydroelectric engineering; Employer's Taking Over Identity Certificate Evaluation of Tenders Initiating Process Group; Executing Process Group Instructions to Tenderers Industrial building Investment payback analysis; Ineffective Individual and team performance Information Distribution Negotiation Indirect Costs Nominated Subcontractors Incentive bonus Information Technology Interpretation; Insurance Observation Inspections Off-site Online On-the-job training Opening of Tender

验收标准活动时间的估计；活动的定义；活动序列分析；增编核定预算仲裁授予合同；授标标准审计平衡矩阵；基线工程量清单集思广益特性清单土木工程民用建筑索赔澄清闭幕通信管理通信规划沟通技巧沟通渠道或路径完成以计算机为基础的混凝土结构合同条件冲突管理合同管理合同管理变更控制合同结束合同文件合同协议；合同义务承包承包商的代表规划建设管理合同价格控制图成本估算；质量成本成本控制成本预算成本管理合作失败成本关键路径反馈固定价格化石不可抗力计日工职能组织决定；基本原理决策树缺陷责任定义德尔福技术的一般规则交付的一般规定偏差；代直接费用贴现现金流量；传播公路工程；放电的人力资源管理；争端的人力资源规划图纸水利工程；水电工程；雇主接管身份证书评标启动过程组；执行过程组指示的投标工业建设投资回报分析；无效个人和团队的业绩信息分配谈判指定分包商的间接费用激励奖金信息技术解释；保险观察视察场外在线在职培训开幕投标

College of Guandong Business, Guanzhou 510320, China）Abstract: Since large-scale vertical quench furnace is voluminous, whose working condition is a typically complex process with distributed parameter, nonlinear, multi-inputs/multi-outputs, close coupled variables, etc, dynamically decoupling control algorithm of temperature distributed parameter system in the furnace was presented, by which the whole system was decoupled to several subsystems and the implementation of controller was simplified. With finite difference approximation, the space and time step size was solved to ensure the convergency of finite difference approximation. After decoupling, the subsystems were controlled with self-learning PID control algorithm. The results show that the temperature control precision and homogeneity are improved; the overshoot and process in temperature rising period are reduced simultaneity.

摘 要：针对大型立式淬火炉体积庞大，工况复杂，炉内温度分布呈本征非均匀性，具有多输入/多输出、非线性、强耦合等特性，难以实现炉内温度高精度高均匀性控制目标等问题，提出一种温度分布参数系统动态解耦控制算法，其原理是：采用有限维逼近方法将对象解耦为多个独立的子系统，简化控制器的实现过程；通过分析有限维逼近方法的收敛性，获得保证收敛性的空间和时间步长应满足的条件；解耦后的子系统采用自学习PID控制算法，实现炉内温度高精度和高均匀性控制以及升温过程的快速性和小超调。

The article describes a process control system based on ethernet and fieldbus technology. This system can complete parameter control, storage and analysis, such as temperature, pressure, flow rate and level. In the process of control, we use PID algorithm and realize isobaric water supply, then complete the stabilization of water tank.

利用以太网，结合西门子现场总线搭建了过程控制平台，完成了对温度、压力、流量和液位这些典型过程参数的采集、存储和分析，并利用PID算法通过对变频器、电控阀门的控制，实现恒压供水任务，进而完成对于水箱液位稳定的控制。

Recently, artificial intelligent technology, such as expert system, fuzzy control and neural network, is introduced to complex process control, which provides an effective method of the jigging automation. This article studies the strategy and realized method of jigging process automation with intelligent control theory.

首先对影响跳汰分选效果的主要因素做了深入分析，得出床层的密度分布与产品质量密切相关，其正态分布的标准离差可反映出床层中的错配物含量的结论，提出跳汰过程的自动控制应以优化分层状态为目标的控制策略。

Aiming at the deficiencies in applying traditional safety analysis technologies, this paper presents a safety analysis method based on Process Control Event Diagram for control logic in Computer Process Control Systems.

计算机工程， 2009年 22期针对常用安全分析技术应用中存在的不足，提出一种基于过程控制事件框图的计算机过程控制系统安全分析方法。

Process Control Systems; safety analysis ; control logic ; Process Control Event Diagram

国防科技大学信息系统与管理学院；过程控制系统；安全分析；控制逻辑；过程控制事件框图

Quality control ; statistical process control ; multivariable control system ; Markov process

质量控制；统计过程控制；多变量控制系统； Markov过程

This text hold with pair liquid location production process control system for the background , use the configuration software to structure the control system of a long time, the content includes: Have carried on more overall exposition to the development and basic composition , the characteristic and configuration software system structure of the configuration software of the configuration software at first, through analysing , have affirmed the configuration software as the meaning of control system programming tool of the production process.

本文以双容液位生产过程控制系统为背景，应用组态软件构建一个过程控制系统，内容包括：首先对组态软件的发展和组态软件的基本组成、特点及组态软件体系结构进行了较全面的阐述，通过分析，肯定了组态软件作为生产过程控制系统编程工具的意义。

Don not attempt to do something which you can not to do.

不要企图做那些办不到的事情。

The expression of CTGF and TNF-αweredetected by immunochemistry and the number of Clara Cells was calculated.

光镜下观察肺组织的病理变化，采用免疫组化染色观察肺组织中结缔组织生长因子和肿瘤坏死因子-α的表达和Clara细胞的数量。