基于线性回归的飞机着滑灯灯丝参数设计

飞机着滑灯由于亮度高、工作电压高、寿命短而不同于普通照明白炽灯。使用针对普通白炽灯灯丝设计而开发的软件对着滑灯灯丝进行设计时,设计误差超过20%。在白炽灯灯丝设计理论基础之上,采用线性回归方法给出了着滑灯灯丝参数的计算公式。经过实际测试,设计精度在8%之内。     

基于动态ICD 1553B总线监控事后分析的研究

MIL-STD-1553B总线在航空电子系统中应用广泛,总线监控系统可以实现总线消息实时监控。文中提出一种基于动态ICD总线监控系统研究方法,建立了总线监控系统模型,建立了定制ICD数据库工具。研究基于总线消息事后分析方法。对于不同嵌入系统只需重新定义ICD就可以实现总线监控,提高了系统的可扩展性与可维护性。     

一种新型无线应急指挥通信车的设计方案

无线应急指挥通信车是城市应急指挥通信系统中的重要组成部分,所设计的无线应急指挥通信车不仅可以实现多个不同制式、不同频段的应急指挥通信网络的互连互通,而且还能实现应急指挥通车与远程指挥中心的通信。基于数字信号处理技术和VoIP技术的语音、信令信号的处理是设计方案中的关键技术。     

DVB同密(Simulcrypt)的实现

介绍了DVB同密的原理和他的体系结构，分析了同密的优势，并给出了面向连接消息的一般结构，比较了ECM产生和发送的两种方式。     

Impact of barrier deposition process on electrical and reliability performance of Cu/CVD low k SiOCH metallization

Integration of Cu with low k dielectrics provided solution to reduce both resistance-capacitance time delay and parasitic capacitance of BEOL interconnections for 130 nm and beyond technology node. The motivation of this work is to study and improve electrical and reliability performance of two-level Cu/CVD low k SiOCH metallization from the results of diffusion barrier deposition schemes. Barrier deposition schemes are (a) high-density-plasma 250 Å Ta; (b) surface treatment of forming gas followed by high-density-plasma 250 Å Ta and (c) bi-layer of 100 Å Ta(N)/150 Å Ta. In this work, we demonstrated the superior and competency of high-density-plasma Ta deposition for Cu/CVD low k metallization and achieved excellent electrical and reliability results. Wafers fabricated with high-density-plasma Ta barrier scheme resulted in the best electrical yields, >90% for testing vehicles of dense via chains (via size=200 nm) and interspersed comb structures (width/space=200 nm/200 nm). Dielectric breakdown strength of the interspersed comb structures obtained at electric field of 0.3 MV/cm was ∼4 MV/cm.     

路由选择的智能方法

本文利用模糊理论来对通信网中的路由进行动态选择。文中首先讨论了路由选择所要考虑的一些因素,然后利用模糊综合评判理论评估出路由选择的量化综合指标,再通过模糊图中的最强路法选择出两点间的最佳路由。最后把该法同已有方法进行仿真比较,发现该法比较的方法能较大地提高接通率,且性能未受损害。     

Impact of power electronics packaging on the reliability of grid connected photovoltaic converters for outdoor applications

This paper deals with thermal and reliability aspects of converters for grid connected photovoltaic applications (rate power approximately 100 W) which can be integrated into solar modules. The use of these Module Integrated Converters (MIC) promises a reduction of costs due to mass production. It improves behaviour of the whole photovoltaic system, as there is no voltage mismatch caused by shading effects. The electronic components of the MIC are exposed to extreme environmental conditions. Lifetime limiting factors are described. Methods to increase the lifetime of the most crucial components in the MIC, electrolytic capacitors, are described. The presented 1st generation Low Profile MIC with “optimised design” is capable of running in very high ambient temperatures. This design maximises availability of the photovoltaic system, which consequently leads to a cost reduction of the electrical energy delivered to the grid. Different realisations of how to integrate the designed Low Profile MIC into the solar module are discussed. A detailed thermal simulation is used to optimise the MIC design according to temperature and reliability issues. The models used for thermal simulation are described.     

智能大楼的综合布线系统

从智能大楼的概念出发,分析了智能大楼的特点及传统的配线方式存在的问题,结合国内外智能大楼的发展,介绍了一种新的综合布线系统。     

软件重用在监控系统开发中的应用

文章讨论了基于重用的监控软件用通用化方案,介绍了可重用部件库的组织方法及利用可重用部件合成软件的策略,详细探讨了利用软件重用的思想和技术手段时对监控系统的三个子系统进行通用化软件的设计的方法。     

欧盟电动汽车技术法规研究

从电动汽车的电气安全、电磁兼容、刹车要求、乘员保护等方面,围绕EC指令和ECE法规的修订工作,全面阐述了欧盟关于电动汽车的技术要求,总结了相关技术法规的修订和起草现状,给出了欧盟电动汽车相关技术立法的阶段性发展趋势。