线性化器在低温测量中的应用

介绍在低温测量监控中,DCS系统如何利用线性化器对温度信号直接采集和监控的方法,给出了该方法的原理结构图,并给出了在DCS中的组态模块.实验证明该方法硬件连接比较简单,精度较高,反映灵敏,值得在深低温测量中推广使用.     

Preliminary Design of Control Network for HT-TU Tokamak Cryogenic System

In the course of the cryoplant modernization, a control network will be set up in order to facilitate the control, the supervision, the centralized data acquisition and the alarm handling of the cryogenic system for HT-TU tokamak. The paper introduces the preliminary design of control network based on the Controller Link Network for HT-7U tokamak cryogenic system. The multi-layer structure mentioned in the paper is the mainstream of automatic control. The control philosophy, the structure of the network and the components for control are also presented.     

DCS在EAST低温系统中的设计与应用

本文介绍了DCS在EAST低温系统中的设计与应用,特别对系统的工艺设计、硬件结构和软件设计作了详细介绍.     

EAST低温系统主运行模式的控制流程设计与分析

EAST托卡马克核聚变实验装置是世界上从事核聚变研究的先进科学设备。EAST低温系统是该装置的主要子系统之一,其相应DCS控制系统具有很高的稳定性和可扩展性,各部分的控制相互独立、并行执行。本文详细介绍和分析了EAST低温控制系统及在正常降温、稳态和失超模式下的控制流程设计。     

Preliminary Design of Control Network for HT-7U Tokamak Cryogenic System

In the course of the cryoplant modernization,a control network will be set up inorder to facilitate the control,the supervision,the centralized data acquisition and the alarmhandling of the cryogenic system for HT-7U tokamak.The paper introduces the preliminarydesign of control network based on the Controller Link Network for HT-7U tokamak cryogenic     

基于PLC和组态软件的螺杆压缩机组监控系统

HT-7U低温系统是为保证HT-7U托卡马克全超导先进稳态可控核聚变实验装置的纵场和极向场超导磁体稳定运行提供冷量．螺杆压缩机组是HT-7U低温系统的子系统之一。本文详细论述了基于PLC和组态软件的螺杆压缩机组监控系统，给出了监控系统的硬件结构、控制思想、软件结构和实现的功能。     

DCS在EAST低温系统中的设计与应用

本文介绍了DCS在EAST低温系统中的设计与应用,特别对系统的工艺设计、硬件结构和软件设计作了详细介绍。     

EAST Cryogenic Supervisory and Control System Based on Delta-V DCS

The control system for the Experimental Advanced Superconductive Tokamak （EAST） cryogenic system is designed and constructed based on Delta-V DCS （Distribution Control System）, which consists of engineering workstations, operator workstations, application workstations, redundant controller units, input/output （I/O） cards and a redundant control network. Our task is to design a supervisory and control system to provide the operator interface for control and monitoring, sending alarms, archiving of selected signals, and other routines to analyze realtime and historic data. The hardware configuration, software structure and control algorithms are illustrated in detail in this paper. Hvpothetic oroblems and further research are also mentioned.     

专家规则与PID复合控制在压缩机系统中的应用

针对串并联螺杆压缩机系统中的模型难以建立、能量滑阀的不确定性和时间滞后等问题,为解决压缩机吸排气压力在各种负荷变化时稳定性和快速性的矛盾问题,该文提出了一种专家规则与PID控制算法结合的控制方案,运用MATLAB对系统中控制回路进行仿真.仿真和实际运行结果表明,专家规则与PID复合控制策略在螺杆压缩机控制系统中取得良好效果,在负荷变化时,压力的超调量小、过渡时间适合且最终稳定.压缩机吸排气压力的稳定控制对于节约能量、提高制冷机效率和保证核聚变装置实验正常运行具有重要意义.