现场控制

The article exoatiats on the reasons of hole deviation; analyses a great many of recent field application of deviation control , gains a nice bit of field experience and theory on deviation control .

本文阐述了井斜产生的原因；归纳分析了今年来国内井斜控制技术在现场应用情况；结合静力学防斜理论和动力学防斜理论，总结了大量井斜控制技术现场应用的工程经验和理论，对防斜钻井技术研究及防斜钻井实践有重要参考、指导意义。

The design of the interface modules of the control system is the following work. They were the interfaces connecting controller with digital, analog network, and the monitor computer respectively.

紧接着展开了对控制系统通信部分的研究开发工作，结合相关的芯片技术，设计了系统的数字通信模块、模拟通信模块、监控计算机通信模块；在现场模拟量的输入／输出模块，利用两片8255扩展了48个I／O端口，实现对现场设备的远程控制。

CAN field-bus is a kind of serial communication network, which supports distributed control or real-time control effectively. Because of its excellent characteristic and high reliability, CAN field-bus is highly thought of by industries. As the main data channel, 1553B field-bus relates various subsystems that are included in the integrated electronic system of avigation. Due to its excellent performances, 1553B field-bus has been widely applied in avigation, spaceflight, navigation and other weapon equipment.

CAN现场总线是一种有效支持分布式控制或实时控制的串行通信网络，具有卓越的特性和极高的可靠性，受到工业界的高度重视。1553B现场总线作为航空电子综合系统中各子系统之间交联的主要数据通道，因其性能优异，已在航空、航天、航海和其他装备上得到广泛的应用。

FF, so far, is capable of imbedding the PID module block.

如果APC算法内嵌到DCS的控制站，那么控制站的基础控制算法若能内嵌到带现场总线的现场设备，势必大大增控制站的控制和优化功能。

The tests and commissioning results showed that this incomer and coupler automation system, designed with the automation system design platform, had more advantages such as simple configuration, short design periods, useful, easy operation and maintenance,reliability. And this system can completely meet the logic interlock for incomer and coupler in low-voltage system.

现场安装调试及运行结果表明，利用本文建立的设计平台开发的低压配电网一次开关元件操作自动控制系统结构简单，开发周期短，实用性好，现场调试简便，易于操作和维护，可靠性高，能满足国内低压配电网低压进线和母联断路器智能控制系统的要求。

Acording to the controlling of broadcasting in the news spot, live broadcasting can also be classified into controllable TV news broadcasting and uncontrollable ones.

根据报道中对新闻现场的控制程度，现场直播又可以分为可控制的电视新闻直播和不可控制的电视新闻直播。

The main related design are on the following: Using RS232 to realize the target of communication links between host computer and target machines, and to test the PC serial; to make target machine startup disk; to design the Interface of target Machine ; to develop a device driver program module against remote data acquisition and control system ADAM5000 using the technical framework of xPC; and to realize Data Acquisition and controlling according to using ADAM5000 device driver program module against an actual water level in the block diagram of PID processing control system, the generation of real-time control procedures at the scene Debugging was expected to controlling effect.

本课题主要做了以下相关设计：利用RS232实现宿主机与目标机之间通信连接及对PC机串口的检测、制作目标机启动盘、设计目标机界面及在xPC技术框架下针对远端数据采集与控制系统ADAM5000开发了设备驱动程序模块，并以一个实际水箱液位为背景，在已有的PID液位过程控制系统算法框图中应用该设备驱动程序模块实现对现场设备的数据采集和控制，所生成的实时控制程序在现场调试中获得了预期的控制效果。

The main related design are on the following: Using RS232 to realize the target of communication links between host computer and target machines, and to test the PC serial; to make target machine startup disk; to design the Interface of target Machine ; to develop a device driver program module against remote data acquisition and control system ADAM5000 using the technical framework of x PC; and to realize Data Acquisition and controlling according to using ADAM5000 device driver program module against an actual water level in the block diagram of PID processing control system, the generation of real-time control procedures at the scene Debugging was expected to controlling effect.

本课题主要做了以下相关设计：利用RS232实现宿主机与目标机之间通信连接及对PC机串口的检测、制作目标机启动盘、设计目标机界面及在 x PC技术框架下针对远端数据采集与控制系统ADAM5000开发了设备驱动程序模块，并以一个实际水箱液位为背景，在已有的PID液位过程控制系统算法框图中应用该设备驱动程序模块实现对现场设备的数据采集和控制，所生成的实时控制程序在现场调试中获得了预期的控制效果。

Is coaxial actuates a alternator based on Simens PLC and its the network direct current velocity modulation system by a direct current motor, the direct current motor to actuate with the direct current velometer and to be loaded with revolves the encoder examination rotational speed; The generator electricity generation voltage after the numeral demonstrated the table demonstrated and delivers to the PLC simulation quantity load module.

在工业控制过程中，继电接触器控制系统因其没有运算、处理、通讯等功能，而不能完成复杂的控制方式，20世纪60年代PLC控制系统应运而生，它综合了计算机技术、自动控制技术和通信技术等现代科技，是当今工业自动控制的标准设备之一；70年代以后，又相继出现了集散控制系统DCS、现场总线控制系统FCS，现在以及今后很长一段时间内会是三种控制方式并存的局面，在这一背景下该文分析PLC控制的现状及发展前景。

The invention relates to a dynamic matrix control system of high-purity distillation, which comprises distillation tower, intelligent checker, DCS system, superior host, and on-site bus, while they are connected. The control system uses tower product group as the object variable, and the reflux ratio and reboil ratio as control variable; the superior receives history temperature and pressure data from the DCS real-time database, via the predict control and dynamic matrix controller, to obtain the output values of present controller as reflux ratio and reboil ratio, then feedback said two values to DCS system, to function the distillation object. The invention can confirm the high-purity stable operation, with better dynamical control.

本发明公开了一种高纯精馏的动态矩阵控制系统和方法；系统包括：精馏塔、智能检测仪表、DCS系统、上位机和现场总线；所述精馏塔、智能检测仪表、DCS系统和上位机通过现场总线依次相连，实现信息流的上传和下达；本发明所涉及的控制系统采用塔双端产品组分为被控变量，回流比和再沸比为对应的控制变量；上位机从DCS实时数据库中获得历史的温度、压力等数据，通过推断控制环节和动态矩阵控制器环节，得到当前控制器的输出值-回流比和再沸比，再把控制器输出值返回给DCS系统，实现了对高纯精馏过程的双端产品高纯控制，对双端组分的高纯度平稳操作，具有很好的动态品质和控制效果。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了