查询词典 quality control

The experiment and the research indicate that:(1) Through the Hot-Continuous-Rolling production technics under small reduction ratio of 4.04 and 5.08, the rectangular continuous-casting billet of 235×265mm can be used to produce big size steel stick of Φ140mm and Φ 125mm whose macrostructure and mechanical properties meet the standards, this technics is viable;(2) This rolling technics can make the deformation penetrate to the center of the billet by low temperture and low velocity and big roller diameter and large reduction quantity at every pass and optimum design and arrangement of rollers, which is the key of Hot-Continuous-Rolling technics under small reduction ratio;(3) The sending technics used in Xining Special Steel Co.,Ltd can not use waste-heat of billet adequately, but the sensitive temperature section of A1N or sulphides or inclusions separating out is avoided, creating a favorablecondition for insuring good surface quality of final rolled steel;(4) The Hot-Continuous-Rolling technics under small reduction ratio has a close relationship with the billet quality control and the hot sending process control and the cooling control after rolling.

通过实验研究表明：(1) 235×265mm矩形连铸坯分别采用4.04和5.08的小压缩比热连轧生产工艺，所生产的Φ140mm和Φ125mm的大规格棒材，其低倍组织和机械性能均符合标准要求，该工艺是可行的；(2)本实验所采取的低温低速、大辊径大道次压下量轧制工艺加上轧辊孔型的优化设计与配置，可以使加工变形渗透到铸坯的中心，这一点是实现小压缩比热连轧生产工艺的关键；(3)西宁特钢在红送过程中虽然铸坯余热未能得到充分的利用，但是有效地避开了A1N、硫化物的析出及夹杂物偏析的敏感温度区，为保证最终轧材良好的表面质量创造了有利的条件；(4)小压缩比热连轧生产与铸坯质量控制，热送过程控制以及轧后冷却控制密不可分。

The change of water environment s quality of urban area in Suzhou was caused by the change of water system and pollution control. It suggested that it need to control the municipal and agricultural pollution besides the control of industrial pollution. The improvement of water quality and ecol...

提出，除继续加强对工业污染源的防治外，还需对水系范围内的生活、农业等方面产生的污染进行防治；在规划水利建设工程时，应将水环境质量的改善与生态建设全面地比较与评价，按其结果再实施工程建设；已建成的环太湖间在不影响其主要功能的情况下，应保持开启，让优质的太湖水补给运河，从根本上改善苏州市区水环境质量。

To further enhance the autoleveling technology of drawing frame, a new type of dual open-loop control system was issued based on the analysis of the quality of the current autoleveling control system of drawing frame. This paper presented a mathematical model of the new control system, analyzed its mathematical theory, and elucidated the theoretical basis of dual open-loop autoleveling control system.

为进一步提高并条机自调匀整技术，在分析纺织并条机自调匀整控制系统优劣的基础上，提出一种新的双开环控制系统，给出了新型控制系统的数学模型，详细分析了其数学原理，阐述了双开环自调匀整控制系统的理论基础。

A new discrete reaching law is presented to improve the reaching process of discrete exponential reaching law.The discrete-time variable structure control system designed by this reaching law can not only weaken the chattering and control the system state approach to zero diminishingly,but also keep the basic property of quasi-sliding mode which can cross the switching surface step by step.This method improves the reaching process and enhances the control quality of the control system.

为了改善离散指数趋近律的趋近过程，提出了一种新的趋近律，利用该趋近律设计的变结构控制器，不仅能够大幅度削弱抖振，使系统运动最终趋于原点不存在稳态振荡，而且能使系统的准滑动模态保持步步穿越切换面的基本属性，有效地改善了趋近过程，提高了控制品质。

This paper introduces how to use PLC realize PID automation control system in constant liquid level system of waterworks though a instance project. It adjusts liquid level by control the valve though PID arithmetic and deals with outside program, makes the liquid level constant at the expectation value. The adjusting time is the same as manual control, but the water quality is better. Its advantages are reaction rapidness, auto-control disengage intervenor, quick protection of fault, more safety and stabili...

本文以一工程实例介绍了如何用PLC在水厂的滤池实现PID恒水位控制，它通过PID算法和外围的程序处理，通过控制阀门开度来调节水位，使水位基本恒定在期望值，并且阀门调节次数基本与手动调节一样，但水质却明显好很多，更重要的是对现场适应能力强，反应快，而且完全脱离人为干预进行全自动控制，对故障也有快速保护，更具安全稳定性。

This paper introduces how to use PLC realize PID automation control system in constant liquid level system of waterworks though a instance project. It adjusts liquid level by control the valve though PID arithmetic and deals with outside program, makes the liquid level constant at the expectation value. The adjusting time is the same as manual control, but the water quality is better. Its advantages are reaction rapidness, auto-control disengage intervenor, quick protection of fault, more safety and stabilization.

本文以一工程实例介绍了如何用PLC在水厂的滤池实现PID恒水位控制，它通过PID算法和外围的程序处理，通过控制阀门开度来调节水位，使水位基本恒定在期望值，并且阀门调节次数基本与手动调节一样，但水质却明显好很多，更重要的是对现场适应能力强，反应快，而且完全脱离人为干预进行全自动控制，对故障也有快速保护，更具安全稳定性。

Landscape of the related projects, planning and design projects for technical control, schedule control, quality control, safety control and management acing.

对相关景观工程、规划设计项目进行技术控制、进度控制、质量控制、安全控制及经营管理核算。

Weight control system is the important composition part of modem cigarette machine control system, its technology is one of indispensable crucial technologies of smoke weight control technology, its control effect directly affects the amount of the quality of product, the precision of product and consumption.

重量控制系统是现代卷烟机控制系统的重要组成部分，其技术是烟支重量控制技术不可缺少的关键技术之一，其控制效果直接影响到产品的质量、产品的精度和消耗的多少。

The tracking control of feed tank levels is improved by the selective control and the transparent predictive functional control. It is proved by application in Gushen Group that the operation process is steady, the product quality is increased, the tracking control precision is ensured, the ideal recovery of oligosaccharides from streamed wastewater together with the optimal strategies can prompt membrane technology to be applied in environment protection and other separation processes.

通过在谷神集团的大豆低聚糖浓缩过程应用实践表明，所提出的优化策略稳定了操作过程，改善了产品(来源：Ac1B5fC论文网www.abclunwen.com)质量，并提高了对工艺参数跟踪控制的精度，使膜系统达到了废水处理同时回收高附加值产品的理想效果，有利于膜技术在环境保护及特种分离领域的推广应用。5。

The practical operation shows that the system can realize the temperature control of multi workplats fritting furnaces and also the control of the fritting furnace′s supplementary functions,this system by this method has excellent quality and efficiency. PLC ; temperature control ; fuzzy control ; fritting furnace

系统操作简单、可靠性好，大大提高了温度控制精度及工艺过程自动化水平，具有很好的经济效益。1系统的工艺要求及功能要求1.1系统的工艺要求本控制系统的控制对象为多工位扩散炉，它是由多个扩散炉炉体和一个加热炉体

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。