过程控制

On the basic of studying the principles and design ideas of existed controlstrips, the paper summarized and analyzed them, and selected the key elements suitable for controlling production quality, then worked out control strip for platemaking and printing quality control.

本文在深入学习和研究已有控制条的工作原理和设计思想的基础上，对这些控制条进行总结分析，确定适合制版和印刷的控制要素，设计开发出用于平版印刷的PostScript印刷控制条，主要用于监控印刷过程，同时又对制版质量起到一定的控制作用。

According to the controllability and observability theory of the system and based on the analysis of the redundancy of the components in the control system, the fault-tolerant condition in the failure system were discussed and used for a quantitative fault-tolerant analysis for the pressure control system in a pressurizer.

热力系统的控制是至关重要的，控制系统的性能直接影响热能动力装置的安全、正常运行，容错控制的目的就是为了提高控制系统的可靠性和安全性。在复杂控制系统的运行过程中，经常会随机地出现一些故障，如系统参数跳变故障、传感器故障、执行器故障等[1] 。

This paper presents a new processing technology of Pyracantha fortuneana beverage and HACCP system in the course of all processing, and analyzed all hazard factors which would possibly affect the quality of beverage, the critical control points were set up, and also established the critical limits, supervise and correct measures.

为实现火棘果汁饮料生产中的安全质量控制，以秦岭产的野生火棘为实验材料，通过对原汁提取、果汁饮料生产工艺及生产过程的HACCP质量控制体系研究，对各工艺环节进行危害分析与评估，确定了关键控制点、控制范围和监测校正方法，提出了火棘果汁饮料的生产工艺以及初步的HACCP质量控制体系，生产符合产品质量标准的产品，具有良好的产品质量控制效果。

This paper based on 180,000 tons of synthetic ammonia and 300,000 tons of urea Manufacturing Process of Henan Heartbeat Chemical Company ,which is born by Zhejiang soupcon Co., LTD.

本文对集散控制系统的发展过程进行了综述，介绍了集散控制系统的基本结构和工作原理，介绍了集散控制系统的发展趋势及近几年来集散控制系统在工业现场的具体运用情况，并重点分析了浙大中控的ECS-100集散控制系统的特点和组成。

Welding control system comprises hardware and software, using C language welding program, and it reduces difficulty of control system exploitation. Scheduling control, sampling disposal of feedback signals and digital PI modulation are achieved through program control, and this controls veraciously welding process.

焊接控制系统由硬件和软件两部分组成，焊接程序采用C语言编写，降低了控制系统软件开发的难度，通过程序控制实现时序控制、反馈信号的采样处理及数字PI调节，对焊接过程进行准确的控制。

Through the study of PLC working principle and PLC network communication basic theory, it is a main purpose to master the cruces of realizing PLC control system, the control process and control mode, PLC topology structure and communication protocol between sub network.

通过对PLC的工作原理及PLC网络通信的基本理论的研究，达到在构建PLC工业控制系统时掌握PLC实现控制的要点、控制过程和控制方式以及PLC控制网络拓扑结构和各级子网通信协议配置原则的目的。

Control factors of VRLAB in manfacturing process were discussed, and the reasons for control the factors were analyzed. The results show that iron in lead should be control in 0.000 7%, oxidizability of lead should be controlled in ±5% require...

通过查阅文献并结合生产实际，对VRLAB生产过程中需要控制的因素加以论述，并论述了控制这些因素的原因，指出铅粉中铁杂质含量宜控制在 0 。0 0 0 7%以内，铅粉的氧化度应控制在要求指标的± 5 %以内，灌酸密度应控制在技术要求的± 0 。0 0 5g/cm3 以内。

It also illustrates the general design project, the design process and construction of the PLC control system for three-story buildings, listing the specific main circuit, trapezia control chart of elevator and repertoires.

本论文通过讨论电梯控制系统的组成，阐述可编程控制器在电梯控制中的应用，采用三菱PLC编程的程序控制方式，提出了三层电梯的PLC控制系统总体设计方案、设计过程、组成，列出了具体的主要硬件电路、电梯的控制梯形图及指令表。

Application of PMAC time-base control in the NC machining of noncircular section parts;2. This system solved the problem about the motion s devolving, it is the applying of function of PMAC on accurate and time-base controlling that ensured the synchronization of motion.

为解决感应加热过程中传送运动系统的运动交接难的问题，开发了一种以PMAC运动控制器为核心的运动控制系统，利用PMAC卡运动控制的精确性和时基控制的同步性解决了控制运动的交接问题，经试验证明所开发的系统可以达到控制要求。

For Haiphong, Emerson's comprehensive PlantWeb solution includes deployment of the Ovation control system for data acquisition, as well as for monitoring and control of the sequence control system, furnace safeguard supervisory system, and electrical control system for all major plant components, including the boiler, turbine, flue gas desulphurization system and balance of plant processes.

对于Haiphong，艾默生全面的PlantWeb解决方案包括：Ovation控制系统的部署、为监测和控制的程序控制系统、熔炉保护监督系统和控制所有电厂设备的电气控制系统。这些设备包括锅炉、涡轮、废气脱硫系统和工厂平衡过程。

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。