查询词典 process control

But,the drawbacks of Shewhart's control chart is that when the control chart shows abnormal,it cannot tell us what and where is the assignable cause,i.e.it cannot diagnose the abnormalityof the process.In 1982,Prof.Gongxu Zhang proposed the diagnosis theory with two kinds ofquality,solved the diagnosis problem of assignable cause,thus opened a new direction ofstatistical diagnosis theory and developed the theory of SPC into a new stage ofSPCD(Statistical Process Control and Diagnosis).The multi-operation and multi-index system exists everywhere,in general,nearly all theproduction lines of factories belong to this system.

但休哈特控制图的缺点是，当控制图显示异常时，它不能告知是何原因、何处发生了异常，即不能诊断。1982年，我国著名质量管理专家张公绪教授提出两种质量诊断理论，解决了对异常因素的诊断问题，开辟了统计诊断理论的新方向，将质量控制推向了一个新的发展阶段——统计过程控制与诊断阶段。

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。

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。

Process control program using R button to start recording, P key to pause recording control process, S key control program to stop recording, recording, there are characters in RECORD prompt.

程序中用 R键控制程序开始录制， P键控制程序暂停录制， S键控制程序停止录制，录制中有字符RECORD提示。

The quality control is an integral part of the quality management, which is engaged in meeting the quality requirements covering process control, take-over control and process improvement.

质量控制是质量管理的一个部分，致力于满足质量要求，包括过程控制、验收控制和过程改进。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。