协同作战能力简析

协同作战能力(CEC)是一种充分利用网络技术的新型海岸防空技术，给系统的作战能力带来了革命性的交破。本文对协同作战能力的产生、功能、组成以及未来的发展趋势作了详细的介绍，阐述了CEC系统的总体设计思想。在此基础上，将CEC系统与传统的作战系统的性能和设计思想在各方面进行了比较，交出了CEC系统各方面的优越性能。协同作战能力是现代和未来作战系统的发展方向，CEC系统的发展必将成为衡量各国国防科技现代化的重要指标。     

彩色图像增强的改进算法

为提高彩色图像的整体感官效果,在研究CES（Color image Enhancement by Scaling）算法出现块效应的原因基础上,提出了一种改进算法,即各向异性扩散滤波器的ICES（Improved Color image Enhancement byScaling）。与CES相比,ICES算法在不增加计算复杂性的前提下,不仅得到了不逊于CES算法的增强效果,还能极大地抑制块效应。     

多台离心式压缩机集中运行及其系统控制

启明星电解铝厂空压站共设计六台离心式压缩机，为电解、氧化铝输送、炭素阳极生产提供压缩空气。本文针对实现压缩机节能、平均寿命等模式，叙述单台离心式压缩机控制原理和六台压缩机CES集中运行及其系统控制，为故障分析提供解决途径。     

基于DMT的HDSL／ADSL系统中的回波抵消技术

高比特率数字用户环路是在光纤用户网普及之前向用户提供宽带业务的一种过渡手段。ＤＭＴ（离散多音频调制）是一种多载频调制，由于性能优越，被广泛应用于ＨＤＸＳＬ和ＡＤＳＬ系统中。采用加波抵消的方法，可以提高系统传输速率、增加传输距离。本文着 基于ＤＭＴ的ＨＤＳＬ和ＡＤＳＬ系统中的回波抵消技术－－ＴＡＦＤＥＣ方法，即将频域的回波抵消器（ＥＣ）和时域的回波合成器（ＣＥＳ）结合起来，以达到减少运算量，降低复杂     

An advanced zero emission power cycle with integrated low temperature thermal energy

An innovative zero emission hybrid cycle named HICES (hybrid and improved CES cycle) is presented in this paper. It can utilize fossil fuel and low quality thermal energy such as waste heat from industrial processes and solar thermal energy for highly efficient electric power generation. In the HICES cycle, natural gas is internally combusted with pure oxygen. External low quality thermal energy is used to produce saturated steam between 70 and 250 °C as part of the working fluid. The thermodynamic characteristics at design conditions of the HICES cycle are analyzed using the advanced process simulator Aspen Plus. The influences of some key parameters are investigated. The results demonstrate that the thermodynamic performances of the HICES cycle are quite promising. For example, when the external heat produced saturated steam is at 70 °C, the net fuel-to-electricity efficiency is 54.18% even when taking into account both the energy penalties to produce pure oxygen and to liquefy the captured CO₂. The incremental low temperature heat to electric efficiency is as high as 14.08% at the same time. When the external heat produced saturated steam is at 250 °C, the net fuel-to-electricity efficiency reaches 62.66%. The incremental low temperature heat to electric efficiency achieves 48.92%.     

Comprehensive reliability evaluation of multistate complex electromechanical systems based on similarity of cloud models

High reliability and security have become the hallmarks of complex electromechanical systems. Owing to the difficulties in fault data collection, ambiguity and uncertainty have been inevitably associated with complex electromechanical systems. Thus, the ability to perform reliability evaluation using scarce fault data is of immense significance to these machines and is the focus of this study. A similarity based cloud model is proposed to evaluate the running state of complex electromechanical systems. By combining objective and subjective factors, the reliability of complex electromechanical systems is evaluated by calculating the similarity between the cloud models of actual and standardised states. Next, the inverter of an offshore wind turbine is used to verify the accuracy and effectiveness of the proposed approach. The cloud model based framework for reliability evaluation inherits the preponderance of the uncertainty problem, overcomes the drawbacks of the current reliability approaches, and provides a theoretical basis, as well as a practical approach for the maintenance and repair of complex electromechanical systems with missing fault data. Additionally, it also provides a new methodology for solving the uncertainty problems caused by paucity of data.     

全业务网APON光纤接入传输系统

介绍在国家八六三计划资助下研制成功的全业务网接入传输系统 ,首先简述了系统构成、用户业务接口和传输帧结构 ,接着对 HFC双向光纤传输系统进行了简介 ,最后介绍了 ATM- PON系统和HFC系统的性能指标     

基于离散对数问题的可截取签名方案

在朱辉等提出的无证书签密方案(计算机研究与发展,2010年第9期)基础上,提出一种满足强安全性、无需双线性对运算的可截取签名方案.通过将用户公钥绑定在部分私钥的生成算法及签名算法中,降低公钥替换攻击的威胁,利用安全哈希函数的不可碰撞性,使方案能抵抗适应性选择消息的存在性伪造攻击,并在随机预言模型下基于离散对数难题给出安全性证明.与同类方案相比,该方案的签名及可截取算法减少了一个指数运算,计算效率有所提高.     

A Novel Hybrid Salp Swarm Differential Evolution Algorithm Based 2DOF Tilted-Integral-Derivative Controller for Restructured AGC

Abstract

This article elevates the study of Automatic Generation Control (AGC) for a multisource interconnected power system under the restructured environment. Physical constraints such as Generation Rate Constraints (GRC), Governor Dead Band (GDB) and Boiler Dynamics (BD) are incorporated into the system for a more realistic approach. Distribution Generation (DG) system is also considered to incorporate the effects of renewable energy sources penetration. A novel cascaded topology of 2-Degree of Freedom Tilted-Integral-Derivative Controller with filter (2DOF-TIDN) is proposed for anticipated AGC mechanism. A maiden application of Hybrid Salp Swarm Differential Evolution Algorithm (HSSDEA) has been successfully applied to get the different optimum gains of the proposed controller. Capacitive Energy Storage (CES) system is also incorporated for the proposed system for the AGC mechanism. The supremacy of the proposed controller is examined by comparing with other well-known or benchmark controllers. The robustness of the proposed system has been analyzed for the contract violation case of deregulation. Finally, the efficacy of the proposed work has been verified by comparing with the previously published work of literature on same platform.     

城域以太网中的电路仿真业务及其应用

文章概述了基于城域以太网（MEN）的时分复用（TDM）电路仿真业务（CES）的概念，简要介绍了基于MEN的CES的主要业务类型，并着重分析了其中的TDM线路业务的主要结构及其运作方式，描述了电路仿真业务的主要接口类型与功能元件，最后对其进行了应用方案与应用前景的简要分析。