关于工控系统信息安全的思考与建议

文章在介绍工控系统的发展历程后,分析了工控信息网络安全隐患的本质与根源,在建议借鉴国外相关规范和经验的同时强调国内重要工程产品引入的约束性,提出了大力支持国内自主核心工控产品的必要洼。     

基于CFL_BLP模型的CFL SSL安全通信协议

现有PKI、IBC认证技术与SSL/TLS通信协议已不能满足当今网络空间新兴信息产业的毫秒级信息安全需求。针对新兴信息产业的毫秒级通信安全问题,以CFL为原点技术,并基于CFL_BLP模型给出CFL SSL协议及其形式化描述,从协议层面上证明该协议可实现毫秒级双向认证、通信的机密性和完整性保护、自主可控以及防止中间人攻击等信息安全属性。实验结果表明,与SSL/TLS协议相比,该协议的可用性和安全性更高,且能够满足各种新兴信息产业通信机制的毫秒级信息安全需求。     

Input-parallel output-parallel configuration of boost half bridge DC-DC converter with control strategy

The concept of connecting two boost half bridge DC-DC converter modules in input-paral- lel output-parallel configuration is presented. The input-parallel-output-parallel （IPOP） converter consists of multiple boost half bridge （BHB） DC-DC converter modules which are connected in par- allel at the input and output side. This kind of converter is an attractive solution for high power ap- plications. The correlation between input current sharing （ICS） and output current sharing （OCS） of the IPOP converter basic modules is described. Two loop control strategies, consisting of input cur- rent loop and output voltage loop, have been developed to achieve equal ICS and OCS in this present work. The control strategy for the IPOP configuration of boost haft bridge DC-DC converter has been verified for different load conditions （half load and full load）, The IPOP system proposed here is comprising of two modules but it can be extended to three or more. The performance of the pro- posed system along with the control strategy is verified by simulation in MATLAB using Simpower tool. Finally the satisfactory simulation results are obtained.     

基于FPGA的频谱分析处理器设计与应用

本文介龆了数字接收机ICS554的结构,使用其中的FPGA完成频谱分析处理器的设计工作.整个设计采用流水方式,提高了系统时钟频率,对数据完成了缓存、加窗、快速傅立叶变换处理.实验结果表明此处理器高速地实现了频谱分析功能,满足实时信号处理要求.     

Internet连接共享的设计与实现

介绍了Internet连接共享、网络拓扑结构,说明了安装网络硬件,指出了安装服务器网络软件和配置客户机的网络属性.     

Improved cuckoo search algorithm for hybrid flow shop scheduling problems to minimize makespan

The multistage hybrid flow shop (HFS) scheduling problems are considered in this paper. Hybrid flowshop scheduling problems were proved to be NP-hard. A recently developed cuckoo search (CS) metaheuristic algorithm is presented in this paper to minimize the makespan for the HFS scheduling problems. A constructive heuristic called NEH heuristic is incorporated with the initial solutions to obtain the optimal or near optimal solutions rapidly in the improved cuckoo search (ICS) algorithm. The proposed algorithm is validated with the data from a leading furniture manufacturing company. Computational results show that the ICS algorithm outperforms many other metaheuristics.     

Solar ICS systems with two cylindrical storage tanks

Two types of ICS solar water heaters designed, constructed and tested. The systems consist of two cylindrical storage tanks, which are connected in series and are horizontally incorporated in a stationary asymmetric CPC type mirror. The efficient operation of the system is due to the thermal losses suppression of the two inverted cylindrical surfaces and the effective use of the two tanks during sunshine period. Low cost and durable materials are used to construct the systems. The mean daily efficiency and the thermal performance of the hot water storage during night are calculated from outdoor experimental data. The results show that the proposed ICS systems are efficient and suitable for practical use as DHW systems.     

Wonderware intouch在烯烃装置中的应用

本文介绍了wonderware intouch 10.1监控软件在我公司120万吨/年重油制烯烃装置应用情况。该工程底层是采用ICS Trplex公司trusted软件,两者通过MODBUS RTU 485通讯连接,实现了数据相互交换。本文讲述了软件特点及两者实现过程,上位机监控软件功能强大性远远满足了公司生产需要,有效地监控了机组及装置连锁运行。实现了安全无事故,为公司创造了很大效益。     

通过Windows的ICS技术实现共享上网

ICS是Windows操作系统提供给用户的一种互联网共享服务,他设置简单,管理方便,非常适合家庭网络环境.本文就ICS作了详细的介绍.     

紧急停车系统在重油催化装置中的应用

主要介绍了ICS Trusted系统在重油催化装置的应用情况，及该系统的基本结构和基本特点，重点介绍了该系统的组态基本方法和维护经验。