The application of EPICS in TMSR radiation protection and access control system

To treat technical problems of data acquisition,alarm management, and historical data archiving of radiation protection control system in Thorium Molten Salt Reactor, a network prototype system was designed based on experimental physics and industrial control system.Radiation level of many locations in Jiading campus of Shanghai Institute of Applied Physics is being continuously monitored, and boundaries of accelerator facilities and radiochemical areas are defined by the access control system. In this paper, we introduce the control system design,including human–machine interfaces, alarm system, historical data archiving system, and the software for access control. The software development followed the standard of Capability Maturity Model Integration(CMMIò) Level3, and the software had passed a third-party test, which indicated that the functionality and the reliability could fulfill the requirements of the radiation protection system.

EPICS系统中CORBA接口技术的研究

介绍了被称为软总线的中间件(Middleware)CORBA与分布式控制系统软件工具EPICS的接口技术。CORBA接口技术能极大地改善大型实验物理装置的系统建模、仿真和机器运行等高层物理应用软件的开发环境,提高软件可重用性、可维护性以及可移植性。

The Design of the Plasma Control System in KTX

KTX（Keda Torus for eXperiment）is a new reversed field pinch device.The KTX plasma control system（PCS）can provide real-time,stable,flexible plasma control which is designed by ASIPP（Institute of Plasma Physics,Chinese Academy of Sciences）,based on the Linux cluster system and EPICS（Experimental Physics and Industrial Control System）framework,and developed from DIII-D（Doublet III-D）PCS.The control of the equilibrium field in KTX uses a PID（Proportional-Integral-Derivative）feedback controller.The control of the gas injection is an open loop control.The plasma control simulation system is one part of the plasma control system,which is used to test the plasma control algorithm if it is revised and updated.The KTX PCS has been successfully tested using HT-7（Hefei Torus 7）experiment data in simulation mode.In the next phase,an error field feedback control and KTX simulator will be added to the KTX PCS,and the KTX PCS will be applied in experiments in the future.

DeviceNet in SSRF control system

In the process of making preliminary design for the Shanghai Syn- chrotron Radiation Facility (SSRF) control system, w- designed and implemented the fieldbus DeviceNet for communication between IOCs (I/O Controller) and device con trollers. DeviceNet, as an open network standard, provides application layer protocol (IOS/OSI layer 7) and thus can transparently connect devices and IOCs without any need for network programming. The application of the DeviceNet to the EPICS (Ex perimental Physics and Industrial Control System) based control system are described.

The control system for water-cooled DCMS in SSRF

A monochromator is important to a beamline for desired monochromatic light. There are three water-cooled double crystal monochromators(DCMs) commissioned in the phase-I beamlines of Shanghai Synchrotron Radiation Facility(SSRF). In this paper, the mechanical principle of the DCMs is introduced. A control system for the monochromator based on the standard architecture for SSRF beamlines is described. To achieve the control requirement precisely, the hardware includes VME(Versa Module Eurocard)-based controller for stepper motors, RS-232-based controllers for micropositioning and piezoelectric actuators. The software is developed with EPICS(Experimental Physics and Industrial Control System) package. Test results have revealed the stability and reliability of the system.

Implementation of effective control system for variable-included angle plane-grating monochromator

The variable-included angle plane-grating monochromator is a homemade key equipment of the scanning transmission X-ray microscopy (STXM) beamline at Shanghai Synchrotron Radiation Facility (SSRF).Monochromatic light of various wavelengths is achieved by an effective control system that handles the rotation of the plane mirror and plane grating mounted in a high vacuum chamber.M511.DDB made by PI Corp.is used as motion stage which has a DC servo motor controlled by a C862 controller based on RS232 protocol.The software platform of STXM is EPICS,so the local control functions are implemented by LabVIEW program to satisfy physics control.For the remote control functions,the program is integrated into EPICS with ShareMemoryIOC.Experimental tests show that the repeat precision of motion control is less than 0.2μm,which meets the control demand.

EPICS控制系统软件开发环境

为了有效地管理大型科学装置控制系统的软件系统EPICS(Expefimental Physics and Industrial Control System)的开发过程,保证系统的可靠性及可维护性,本文对EPICS的开发环境进行了分析,并通过对软件管理方法、账号权限管理及开发过程的研究,提出并建立了一个统一、便捷和可靠的EPICS软件开发平台。

基于Win32 EPICS输入输出控制器的设计

本文介绍了基于Win32实验物理和工业控制系统(Expefimental Physics and Industrial Control System,EPICS)输入输出控制器(Input/Output Controller,ioc)的设计和实现,提出了EPICS IOC和微软技术的衔接方案,结合高性能数字示波器,将基于Win32的IOC很好地融入整个EPICS控制系统。

EPICS在加速器控制系统中的应用

介绍了当前国内外大型加速器实验室采用的主流控制系统软件开发工具EPICS的总体结构和特点,主要介绍了ASYN结构和特点,以及对使用ASYN软件包建立磁铁电源串口设备支持模块进行的研究,并将其应用于中国工程物理研究院驱动自由电子激光的30 MeV直线加速器磁铁电源控制系统中。同时还具体介绍了磁铁电源控制系统的结构以及系统软件设计,为直线加速器控制系统的建设做好准备工作。使用EPICS开发工具建立的加速器控制系统可以满足实验要求的高可靠性和高稳定性,从而为自由电子激光实验提供高品质束流。

EPICS控制系统中的Oracle数据库采集

介绍EPICS(Experimental physics and industrial control system)控制系统中针对Oracle的数据库采集。深入剖析了EPICS通讯协议、Oracle联网协议,详细介绍了采集软件的体系结构和实现方法,最后对EPICS 稳定性做了测试。本文给出了采集程序对控制系统影响的测试结果和采集程序运行情况。

EPICS环境下的LINAC控制系统

介绍了一个100M eV直线加速器(L INAC)的控制系统,该系统采用分布式控制体系结构,采用大型分布式控制软件EP ICS作为开发平台。描述了系统的构成、EP ICS的软件结构、控制原理及其在L INAC控制中的应用。

基于EPICS的运动控制系统

介绍了光束线运动控制系统总体设计、MAXv运动控制器在步进和伺服系统中的应用以及基于EPICS的运动控制系统软件,实现了对四刀口狭缝的运动控制,并进行了精度测试和分析。

嵌入式上海光源EPICS插入件控制系统

插入件是上海光源重要组成设备之一,其控制系统主要由高精度电机运动控制、位置反馈、校正线圈电源控制、前端轨道反馈及人机界面等部分组成。为实现以上功能并无缝接入上海光源EPICS控制系统,设计了基于EPICS的插入件控制系统。在此基础上,利用嵌入式EPICS技术将所有EPICS组件嵌入到一台嵌入式控制器中。嵌入式EPICS技术简化了系统结构,方便用户操作和后期维护。经测试和在线运行,该系统控制功能完整,反馈控制实时性高,束流的稳定性得到了提高,为试验站稳定供光提供了保证。

基于EPICS的上海光源注入引出远控系统

基于EPICS的应用开发,实现了上海光源注入引出系统的远程控制。介绍了控制系统的硬件结构及其工作原理,阐述了远程控制系统的组成及其设计方法。运行结果表明,控制精度高、占用资源少、灵敏度高、工作稳定可靠,满足了控制功能的需求。

用EPICS实现液氮冷却双晶单色器的运动控制

介绍了液氮冷却单色器的工作原理,描述了其运动控制系统的软硬件结构,阐述了在EPICS环境下如何实现单色器步进电机控制、能量扫描和探测器信号实时获取、晶体切换和高度补偿、单色器姿态参数保存等功能。该控制系统已经成功应用在上海光源四条插入件光束线的单色器上。

EPICS在正负电子对撞机低温控制系统中的应用

以北京正负电子对撞机重大改造工程(BEPCⅡI)中低温控制系统为例,介绍了在实验物理和工业控制系统(EPICS)构架下,对不同体系结构的设备级控制进行整合的方法及应用软件的开发,使EPICS应用的优势在加速器的控制系统中得到充分的体现。

C-863控制器在EPICS环境下的应用

C-863控制器在上海光源光束线设备上用于直流伺服电机的控制,介绍了基于EPICS的C-863控制系统的系统结构、硬件设置,重点描述了在EPICS环境下应用C-863控制器的软件设计方法,该方法已经成功应用于XIL光刻线站光电二极管平台和水冷单色器上。

EPICS在VxWorks操作系统下访问VME设备的应用研究

EPICS是由美国阿贡国家实验室(ANL)和洛斯阿拉莫斯国家实验室(LANL)联合开发的控制系统软件包。PCI是一种局部总线,用于连接计算机中的硬件设备。VME是一种异步总线,稳定可靠,在EPICS控制系统中应用广泛。开发EPICS的VME总线驱动程序,需要对计算机的地址映射等机制有充分的了解,因此需要对这些内容进行研究。论文描述了在实时操作系统VxWorks下访问VME设备的原理和方法,以及EPICS对VME设备的支持。

EPICS IOC与EtherCAT设备通信的一种方法

Ether CAT(Ethernet Control Automation Technology)是一种用于工业自动化的实时以太网现场总线协议。通过使用OPC(Object Linking and Embedding for Process Control)Gateway驱动程序实现了EPICS(Experimental Physics and Industrial Control System)IOC(Input/Output Controller)与Ether CAT设备的通信,从而使Ether CAT成为加速器控制系统中对实时性要求很高的高速控制系统的一种解决方案。在简要介绍EPICS、Ether CAT、OPC及OPC Gateway的基础上,对使用OPC Gateway驱动程序实现EPICS IOC与Ether CAT设备通信进行了测试。结果表明,EPICS IOC可通过OPC Gateway驱动程序与Ether CAT设备正常通信。

基于EPICS的磁铁电源控制系统

本文介绍了在EPICS软件环境下实现的磁铁电源控制系统,详细分析了基于DeviceNet现场总线的磁铁电源控制器原理、硬件结构及软硬件系统的集成。测试结果表明该系统的精度、分辨率和稳定度均已达到设计指标,目前已成功地应用在100MeV电子直线加速器的磁铁电源控制中。