可编程逻辑器件在存储器辐射效应测试系统中的应用

着重论述复杂可编程逻辑器件（CPLD）在电子线路设计中的应用，介绍了开发软件MAX＋pluses和可编程逻辑器件的使用。应用可编程逻辑器件EPM7128SLC84—15设计存储器辐射效应测试系统中的数据采集卡（ISA卡），实现了原测试系统的功能，减少了分立器件数量，提高了系统可靠性。     

可编程逻辑器件PLD的发展及其在反应堆保护系统设计中的应用

可编程逻辑器件ＰＬＤ是由用户定义其逻辑功能的新型逻辑器件，它的出现使数字电路设计发生了深刻变革，本文讨论了应用通用阵列逻辑ＧＡＬ改进２００ＭＷ核供热站保护系统逻辑符合单元的研究及美国橡树岭国家实验室应用现场可编程门阵列ＦＰＧＡ设计的无软件数字化保护系统。     

GAL的工作模式及实际应用

通用逻辑阵列——GAL(Generic Array Logic)器件自1986年问世以来,几乎风糜整个可编程逻辑器件(PLD)市场。GAL器件采用EECMOS工艺,具有集成度高、高速低功耗、采用电擦除、器件可以重新擦写100次以上,可灵活编程、可以被加密等特性,现已成为目前最有竞争力的PLD逻辑器件。本文就GAL的工作模式及其应用时的具体使用方法做了较详尽的介绍。     

基于CPLD多路QAC的逻辑电路设计

主要介绍了多道电荷幅度转换器(QAC)的逻辑电路部分.包括积分控制电路和仲裁电路.用可程逻辑器件CPLD来构建这部分电路,和常规的逻辑器件相比其突出特点是:元件少、成本低、功耗低.并且在速度上完全可以替代ECL器件,适合于构建大型的逻辑电路.     

应用GAL器件改进200 MW核供热堆保护系统的研究

通用阵列逻辑ＧＡＬ器件是可以由用户定义其逻辑功能的新型逻辑器件,它的出现使数字电路设计发生了深刻变革。本文介绍了应用ＧＡＬ技术改进２００ＭＷ核供热站保护系统的研究。     

PAL读写仪

随着微电子技术的发展,先后出现了各种功能不同的大规模集成电路,这些器件虽然具有功耗低、集成度高、功能强等优点;但它们灵活性差、造价高,使用起来又不方便(必须和中小规模器件配合使用)。使用可编逻辑器件可使系统结构     

可编程逻辑器件实现加速器恒温水冷系统的控制

可编程逻辑器件实现加速器恒温水冷系统的控制@吕卫星     

BESⅢ触发快控制系统的设计与实现

介绍北京谱仪上的快控制系统的研究与设计。快控制系统主要由6种VME模块组成，它完成系统时钟和快控制命令的扇出和读出状态信号的处理与报警功能。根据不同的要求信号分别使用光纤串行和LMDS标准的差分并行两种数据传送方式。主要逻辑用现场可编程的逻辑器件（FPGA）现，系统按照高速电路的设计要求设计。     

高能物理实验中电子学逻辑在线升级功能的实现

大型物理实验中电子学逻辑经常需要在线升级,现场可编程门阵列器件(FPGA)的大量使用使得在线升级成为可能.介绍了一种通过串行Flash和复杂可编程逻辑器件(CPLD)采用被动串行模式(PS)配置FPGA芯片的方案,可以实现电子学系统的上电自动配置、远程更新配置文件和系统运行模式的切换.给出了方案的基本原理、系统框图和硬件电路.     

CPLD和单片机在脉冲磁铁开关电源中的应用

介绍一种利用可编程逻辑器件(CPLD)和单片机相结合的技术而开发的高性能脉冲电源控制系统。     

上海软X射线自由电子激光装置联锁保护系统

为快速准确地对加速器关键设备提供有效保护,避免关键部件损坏,上海软X射线自由电子激光装置需搭建一套可靠的联锁保护系统。该联锁系统使用分布式架构,并采用可编程逻辑控制器（PLC）和实验物理与工业控制系统（EPICS）进行设计。为满足加速器不同的调试和运行需求,使用Master主站+本地子站的设计策略,最终设计并实现了运行模式管理和切换的功能。系统的所有功能已在设备运行中得到了检验,有效保证了加速器的安全运行。     

Modular software for MAST multi-technology data acquisition system

The MAST (Mega-Amp Spherical Tokamak) data acquisition system is being radically upgraded. New hardware with completely different control interface and logic has been installed on all system levels from front-end devices to plant control. MAST plant control has been moved from VMS to a Windows-based OPC system. Old CAMAC and VME units are being replaced by cPCI and PXI units. A number of CAMAC crates have been upgraded with new Ethernet controllers supporting useful front-end devices.The upgrade is being performed without disturbing operations; the data acquisition units are being replaced gradually. Such an upgrade is possible due to the structure of the MAST data acquisition system which is build as a set of autonomous units, each one controlled by a computer. Modern computers are capable of controlling several units, and this has been the major opportunity and challenge because it radically changes the unit control logic. As a result practically all system components had to be redesigned.The new unit software is a step in system evolution towards greater flexibility and universality. Each unit can now manage multiple data files, possibly with different formats, and many units can be hosted on the same computer. This feature is provided by a message proxy server. Each unit is controlled independently and transparently, exactly like a stand-alone unit. A message interface has been modified for consistent handling of new functions. The unit software supports event-triggered and real-time data acquisition at the system level. New software has been developed for a number of new hardware devices, and the device modules for all usable old devices have been rewritten to operate with the new control interface.The new software allows units to be upgraded even during operations. The system structure and logic provide easy extension. The system as a whole or system design elements could also be used on other fusion facilities.     

320 kV全离子综合实验平台控制系统升级

本文对320 kV全离子综合实验平台的控制系统升级进行了研究。升级后的控制系统采用分布式系统模型构建。硬件采用串口服务器、PLC及伺服电机等部件实现了所有被控设备的远程监测及控制。软件通过建立EPICS IOC动态数据库,实现了对所有被控设备的集成。用户操作界面层采用CSS开发,实现了操作人员对所有被控设备的透明访问。该控制系统已成功连续运行约10 000 h。目前该控制系统运行稳定、可靠,完全满足320 kV全离子综合实验平台的运行及物理实验的需求。     

EAST中央控制系统的改造

EAST中央控制系统是EAST实验调度管理的中枢，协调控制各分系统按照预设参数和控制逻辑投入试验，完成EAST装置的各种运行项目。利用PXI总线设备并结合虚拟仪器技术实现的新EAST中央控制系统可很好地完成对各分系统的参数设置和控制，同时升级改造后的网络环境也为实验的稳定运行提供了保障。改造后的EAST中央控制系统已应用于2012年春季EAST放电实验中，运行稳定可靠，取得了良好的控制效果。     

Quantitative modeling of digital reactor protection system using Markov state-transition model

Recently, digital instrumentation and control systems have been increasingly installed for important safety functions in nuclear power plants such as the reactor protection system (RPS) and the actuation system of the engineered safety features. Since digital devices consist of not only electronic hardware but also software that can control microprocessors, the functions specific to digital equipment such as self-diagnostic functions have been becoming available. These functions were not realized with conventional electric components. On the other hand, it has been found that it is difficult to model the digital equipment reliability in probabilistic risk assessment (PRA) using conventional fault tree analysis technique. OECD/NEA CSNI Working Group of Risk Assessment (WGRisk) set up the task group DIGREL to develop the basis of reliability analysis method of the digital safety system and is now discussing about several issues including quantitative dynamic modeling. This paper shows that, taking account of the relationship among the RPS failures, demand after the initiating event, detection of the RPS fault by self-diagnostic or surveillance tests, repair of the RPS components and plant shutdown operation by the plant operators as a stochastic process, the anticipated transient without scram (ATWS) event can be modeled by the event logic fault tree and Markov state-transition diagrams assuming the hypothetical 1-out-of-2 digital RPS.     

MOLDAS1多参数通用数据获取系统

MOLDAS1是在重离子加速器上的通用数据获取系统。本文介绍了它的构型、软硬件及系统控制逻辑等功能。结构灵活,待测参量几乎无限,系统具有很好的通用性。     

HIRFL设备参数获取及监测系统的设计

描述了一个在VC^ 环境下开发的，用于HIRFL设备自动巡检和报警的应用软件的研制。方法是建立服务器程序来守成设备参九的获取，客户程序即监测程序通过网络自动读取和显示当前HIR－FL分布式控制系统中所有受计算机控制的设计状态，遇见设备故障时自动发出报警。具有响应用户的中断请求，选择或屏蔽设备，更改设备误差，自动存储故障记录等功能。     

核电工程数据库规划和开发管理系统的需求分析及设计

介绍了核电工程数据库规划和开发管理系统的所需功能描述，子系统之间的关系、系统与外界的关系等，简要地说明了系统的分析、概念设计和逻辑设计等有关内容。     

A simulation environment for ITER PCS development

A simulation environment known as the Plasma Control System Simulation Platform (PCSSP), specifically designed to support development of the ITER Plasma Control System (PCS), is currently under construction by an international team encompassing a cross-section of expertise in simulation and exception handling for plasma control. The proposed design addresses the challenging requirements of supporting the PCS design. This paper provides an overview of the PCSSP project and a discussion of some of the major features of its design. Plasma control for the ITER tokamak will be significantly more challenging than for existing fusion devices. An order of magnitude greater performance (e.g. [1], [2]) is needed for some types of control, which together with limited actuator authority, implies that optimized individual controllers and nonlinear saturation logic are required. At the same time, consequences of control failure are significantly more severe, which implies a conflicting requirement for robust control. It also implies a requirement for comprehensive and robust exception handling. Coordinated control of multiple competing objectives with significant interactions, together with many shared uses of actuators to control multiple variables, implies that highly integrated control logic and shared actuator management will be required. It remains a challenge for the integrated technologies to simultaneously address these multiple and often competing requirements to be demonstrated on existing fusion devices and adapted for ITER in time to support its operational schedule. We describe ways in which the PCSSP will help address these challenges to support design of both the ITER PCS itself and the algorithms that will be implemented therein, and at the same time greatly reduce the cost of that development. We summarize the current status of the PCSSP design task, including system requirements and preliminary design documents already delivered as well as features of the ongoing detailed architectural design. The methods being incorporated in the detailed design are based on prior experience with control simulation environments in fusion and on standard practices prevalent in development of control-intensive industrial product designs.