过程控制

boiler is a important power equipment,the require is to provide qualified vapour,let the amount of vapour maked by boiler suit for the load.because of this,every main parameter in the process of the product should be strict controlled.this paper is introduced same main control system in the process of boiler control、concentrate and disperse control system 、the characteristic and the develop of the MCGS compose status software.integrate with the technique of the boiler, discuss the single momentum, double momentum, three momentum boiler control system distinguishly.we think in the process of micro boiler control, three momentum control is the best choice,and has been well implemented in the water level mediation.further more,use the concentrate and disperse control and MCGS compose statue sofeware can achieve the control of the boiler,and can reach a fine effect..

锅炉是一个重要的动力设备，其要求是供给合格的蒸汽，使锅炉发气量适合负荷的需要。为此，生产过程的各个主要参数必须严格控制。本设计了研究锅炉控制过程的几个主要控制系统，以及集散控制系统和MCGS组态软件的特点和发展状况。结合锅炉的工艺情况，针对单冲量、双冲量、三冲量锅炉控制系统，对它们存在的利弊做出了比较和分析。结合生产实践，对三冲量的算法进行比较，认为在小型锅炉控制过程中，三冲量控制是最好的选择，并在水位调节中得到很好的应用。

Using the method of positive direction logic illation,finally the control connection between inflow in combustion section and resident time of waste in each furnace section is found.

分析了城市生活垃圾焚烧炉中关键的技术环节垃圾自动燃烧的控制过程，在此基础上提出了一种控制燃烧过程的智能控制方法，根据提取的影响焚烧过程的特征行为空间，分析了在不同种情况下行为提取算子，找到了以空气进气量和炉床运行速度为基本控制变量的控制基元组合。

To in boat letter this kinds of situation, not divide stage course project and for setting up on the each period of stage there aren't thought , stage of control goal, this text has proposed the control goal model of the quality of stage of course of development based on milestone innovativly, model this divide course that information system develop into feasibility analyse , encode , integrate , is it wait for 9 stages to test, and has confirmed the control goal of quality for each stage , has set up two milestones of quality control , navigate letter course stage that information system develop row , is it have achievement may be examined each period of stage to make, a quality goal is controlled , avoid developing the transparency of course and quality control defect not high of visuality like this.

针对中航信的这种情况，受工程项目对过程进行阶段划分并为每个阶段设立阶段控制目标的思想启发，本文创新性地提出了基于里程碑的开发过程阶段质量控制目标模型，该模型将信息系统开发的过程划分为可行性分析、编码、集成、测试等9个阶段，并为每个阶段确定了质量控制目标，设立了两个质量管理的里程碑，将中航信信息系统开发的过程阶段划，使每个阶段都有成果可以检验，都有质量目标进行控制，这样就避免了开发过程透明度和可视性不高的质量管理缺陷。

The Automatic Control Valves ABS is ABS for short, which is based on the conventional brake system security technologies to enhance improved by controlling the brake hydraulic flaps to achieve control of the wheel locking, the braking process , only when the wheels tend to be controlled when locking, ABS will tend to locking of the wheels anti-lock brake pressure regulation; in the control wheel was not tended to locking, the braking Butterfly Valves process and the conventional system exactly the same dynamic system, the braking process, its work process is actually locking - release - Locking - release cycle of the working process, the vehicle is always in the critical state of locking of the roll gap.

而ABS是制动防抱死系统的简称，它是在常规制动装置基础上的加强改进的安全技术，通过控制刹车油压的收放，来达到对车轮抱死的控制，在制动过程中，只有当被控制车轮趋于抱死时，ABS才会对趋于抱死车轮的制动压力进行防抱死调节；在被控制车轮还没有趋于抱死时，制动过程与常规制动系统的制动过程完全相同，其工作过程实际上是抱死—松开—抱死—松开的循环工作过程，使车辆始终处于临界抱死的间隙滚动状态。

The laser-cut stencil is a subtractive process which is basing the Gerber data that is propitious to improve the hole-making precision, besides we can adjust the stencil by changing the Gerber data.

激光切割是另一种减去工艺。模板直接根据Gerber数据制作，因此开孔精度可以得到改善。数据也可按需要调整以便于改变尺寸。良好的过程控制也会改善开孔精度。

The reaction of the degradation is a first degree , and a constant of reacting rate is 0.5378 mmols/ L.h. The control of step is inside difussion for the process. A series of experiments had been done to remove SO2 with the biochemical reaction system.

脱硫菌通过将硫酸根离子还原成还原态的硫化物然后再固定到蛋白质降解SO2气体，固定化微生物生化降解SO2反应活化能为39.5kJ/mol，降解反应速度为一级反应，反应速度常数为0.5378mmol/L.h，内扩散为过程控制步骤。

The wireless digital trunking intercommunication system will be activated during the games, and the interphones will be provided to personnel such as the liaison officer of each delegation for communicating, as a more flexible communication method for the game management, game process control, and emergency

在比赛期间将启用无线集群对讲系统，提供给代表团联络官等人员使用，为运动会竞赛管理、比赛过程控制、应急联络等提供更加灵活的通信手段。

Density , color meters and spectrophotometers is the most commonly used color printing measurement instruments,Their color reproduction process control provided important information, But those portable device are expensive,and they do not have on-line testing functionality.

密度计、色度计和分光光度计是目前印刷中最常用的颜色测量仪器，它们在颜色复制的过程控制中提供了重要的信息，但这几种便携式测试仪，多为价格昂贵的进口专用设备，且不具备在线检测功能。

Statistical process control is one technique for process control that was invented in 1924 by W.A.

统计过程控制是 W 。

In process control,good adjusting qualities can be obtained by use of GA optimization.

在过程控制中，可采用遗传算法优化调节器参数。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。