Xin hua control , a privately held company founded in 1988 and based in shanghai , china , designs , manufactures and installs steam turbine and power plant control systems and software for application in power generation , pulp paper , oil and gas , and general industrial segments 位于中国上海并成立于1988年的新华控制是一家中外合资民营企业，设计制造和安装汽轮机控制系统和电厂分散控制系统以及应用软件的开发,业务涉及电力造纸石化等工业领域。
This article introduces the principle of deb and features of its function blocks . the article studies the difference , advantages and disadvantages of co - ordination control strategy under the direct energy balance and indirect energy balance . it introduces the configuration and way of max1000 + plus distributed control system , studies the characteristics and its influence to the operation of coordination control of the subsystems of mill , primary air fan etc . deeply and systematically 本文介绍了直接能量平衡控制（ deb ）的原理及其功能块的特点，研究了直接能量平衡和间接能量平衡两种方式下协调控制策略的差异和优劣，介绍了max1000 + plus分散控制系统的组态及方法，深入而系统的研究了磨煤机，一次风机等子系统的特性及对协调控制系统投入的影响。
By analyzing the inerference in power plant in view of dcs ( distrbuted control system ) used in power plant , the hardware technics of anti - interference , including isolating , screening , grounding , balance and power distribution and the software technics of anti - interference in microcomputer monitoring and control system of power plant are introduced simultaneously 以分散控制系统为例，分析了火电厂中的干扰，介绍了火电厂微机监控系统中的抗干扰技术，包括隔离、屏蔽、接地及电源干扰的抑制等，同时介绍了软件抗干扰技术。
In this paper , the author gives a detailed introduction of an interface circuit board and a support software both based on hart communication protocol and serial interface communication protocol . the hardware and software together play a key role in the communication between operator station and field instruments 接口卡件能够在嵌入原来的国产分散控制系统supmax500并且不影响其对远程仪表的模拟量进行控制的基础上，支持符合hart协议的智能仪表与dcs中的分散处理单元和上位机进行通信。
Abstract : this article retrospects the development of sequence control system in thermal power plants at home and abroad ， especially introduces the three developmental stages of sequence control system in china over the past 35 years ， i . e . ： 1 . starting stage ； 2 . the second stage with programmable logic controller ( plc ) as core hardwares ； and 3 . the third stage with sequence control systems of main and auxiliary equipment incorporated into the distributed control system ( dcs ) and with field bus control system ( fcs ) got involved . this article also appraises the features of sequence control system composed of different configurations and looks forward to the developmental tendency of this system for the next century 文摘:回顾国内、外火电厂顺序控制系统的发展，特别介绍35a来我国顺序控制系统经历的起步阶段、以程序控制器( plc )为核心硬件的中期阶段和主、辅机顺序控制系统融入分散控制系统( dcs )阶段、现场总线控制系统( fcs )介入阶段，并对由不同形式组成的顺序控制系统的特点进行评价，展望下一世纪该系统的发展趋势。
This is partially due to its robustness to different industrial environment , simplicity of implementation and familiarity to many engineers . even if it is the advanced computer distributed control system which is widely imported and applied in our country , pid is used as the main control method 在工业过程控制中， pid控制算法以其鲁棒性较好、易于实现和被工程技术人员熟悉掌握等特点，至今仍被工业过程控制界所广泛采用，即使目前被广泛引进和使用的计算机分散控制系统也仍采用常规pid作为主要控制手段。
The dissertation first analyzes the applied signification of pc communicating with dcs , then studies theory of interface ciu and methods of communication through it . the paper compares several identification methods and selects three methods based on ls , and discusses the methods to analyze the control system . at last , three functions above are synthesized into software 论文分析pc机与分散控制系统通信，实现数据的延伸与共享所具有的实用意义；研究了计算机接口ciu的通信原理以及使用通信接口与系统进行通信的各种方案；深入学习系统辨识技术，采用基于最小二乘的三种经典方法对采集到的数据进行模型辨识；对系统分析方法进行了初步探讨。
It becomes more difficult to manage , integrate and share the control system real - time data when we set up the industrial real - time database because of complicated affair between every department and isomeric character of the system . a three - level - structure model and the method to establish database is provided based on corba criterion with its character of being regardless of programming languages , hardware platform and network protocol . a universal real - time database faces multi - system is also set up by learning the distributed criterion , it can realize the request broker , and the application software can visit the database pellucidly ; thus the power station simulation model can be linked with the control system such as infi90 , ovation and be made use of the control object , a closed simulation and control experiment system is set up 在创建工控领域实时数据库时，企业各部门间的复杂事务及内部异构性给实时数据的管理、集成和共享带来了一定的困难，根据corba规范具有语言无关性、平台无关性和网络协议无关性的特点提出基于分布式计算规范corba的三层体系结构模型及建立与维护实时数据库的方法和途径；通过corba规范建立面向多个分散控制系统的通用实时数据库，实现数据访问代理，使应用软件可以透明地对实时数据库进行访问、存取、管理；将infi90 、 ovation分散控制系统与火电厂仿真机模型进行有效的互连，以全物理过程仿真数学模型为对象，构建了闭环控制仿真实验研究系统，实现数据的高效连通及管理；进而通过基于corba的实时数据库构建一个从火电厂仿真机对象到过程控制设备再到sis系统的综合自动化试验平台。
In this paper the system of wi and vhd will be reasearched . the system adopt distributed controll principle to realize combination of the process automation and the management automation . the emphasis of this paper is the research of the system of wi and vhd which is realized by kingview 6 . 0 本文将探讨计算机控制的真空压力浸漆与干燥系统，本系统采用分散控制原理，集中操作，形成过程自动化和管理自动化相结合的分散控制系统，本文重点研究由组态王6 . 0来实现的全自动控制的真空压力浸漆与干燥系统。
The development of process control technology develops from the distributed equipment to the share of facilities , according to the control way , it experienced four seedtime : manual work , simulative instrument control ( the 50 ' s ) , computer central control ( the 60 ' s ) , distributed control system ( dcs ) ( the metaphase of 70 ' s ) 过程控制技术的发展从分立设备发展到共享设备，从控制手段来分，它经历了四个发展阶段：人工控制阶段、模拟仪表控制系统阶段( 50年代开始) 、计算机集中监督控制系统阶段( 60年代开始) 、分散控制系统( dcs )阶段( 70年代中期开始) 。
