用于玻纤喷丝器的铂基电热合金

用于玻璃纤维喷丝器（玻纤漏板）的弥散强化铂基电热合金是20世纪弥散强化铂基高温合金材料发展和推广应用的重要成就,目前该类材料的产品设计和制造工艺日趋成熟,应用范围更加广泛。本文论述了弥散强化铂及铂合金的发展和制造技术、结构组织及强化机理,并指出在制造玻纤喷丝器中的注意事项。     

多路铂电阻测温系统设计

薄膜铂电阻在温度测量领域应用日益广泛,但由于自热效应等特性影响导致实际测量准确度不高,因而结合多点测温的实际需求,提出通过控制流过铂电阻电流的时间方法,保证了铂电阻与被测环境温度保持一致,消除了自热效应影响。主要设计实现以C8051F350为主控制器的电流切换控制电路和信号采集电路,通过计算系统在标准温度点测量值的重复性指标和比较多路测量结果的一致性对性能进行了验证,结果表明设计的系统性能稳定,采集精度高。该方法为薄膜铂电阻应用于高精度温度测量领域提供了有益参考。     

薄膜磁件的研究进展与应用

介绍了薄膜变压器、薄膜电感器及集成化薄膜磁性件的结构、材料、性能及应用.     

质子交换膜燃料电池含Pt催化剂的研究

作为质子交换膜燃料电池的主要用催化剂,Pt的研究对质子交换膜燃料电池运用和普及起着至关重要的作用.为此,近年来一系列大量的基于Pt催化剂的不同形貌、不同成分、不同载体的研究大大地推进了Pt催化剂技术的发展.     

Amorphous silicon-based guided-wave passive and active devices forsilicon integrated optoelectronics

Waveguides and interferometric light amplitude modulators for application at the 1.3- and 1.55-μm fiber communication wavelengths have been fabricated with thin-film hydrogenated amorphous silicon and its related alloys. The technique adopted for the thin-film growth is the plasma- enhanced chemical vapor deposition, which has been shown to give the lowest defect concentration in the film. Consequently the proposed waveguiding structures take advantage of the low optical absorption shown by a-Si:H at photon energies below the energy gap. In addition a good radiation confinement can be obtained thanks to the bandgap tailoring opportunity offered by this simple and inexpensive technology. In particular rib waveguides, based on a a-SiC:H/a-Si:H stack, have been realized on crystal silicon, showing low propagation losses. Recently, however, a new interest as low as 0.7 dB/cm. The same structure has been utilized for the fabrication of thermooptic Fabry-Perot modulators with switching times of 10 μs. Modulators based on the alternative waveguiding configuration ZnO/a-Si:H, giving comparable results, are also presented     

Inverter Motor Drive Ride-Through Schemes for Continuous Process Applications

In continuous process manufacturing, process downtime resulting from electric variable speed drive equipment shutdown due to momentary power line dips or outages can incur heavy cost penalties brought about by loss of product or long process-restart times. In the case of ac adjustable speed inverter drives, the continuous process industries involved in this problem are presently synthetic textile manufacturing and thin-film products processing industries. Existing momentary voltage dip ride-through techniques as applied to adjustable speed inverter motor drives are reviewed with reference to the requirements of continuous process applications. Configurations considered are the variable voltage, input, the pulsewidth modulated, and the current source inverter types. Emphasis is placed on electrical ridethrough techniques as opposed to electromechanical techniques. The advantages and disadvantages of each method are discussed, and basic design and application considerations are outlined.     

薄膜电感器的研究与应用

目前IT系统向高集成度、高频宽带化方向发展,要求在更小的基片上集成更多的元器件,这除了依靠高密度集成技术的发展外,从器件本身出发,研制小型化、薄膜化的器件,以减小系统的整体体积、重量,才能达到降低功率损耗、提高信号传输效率的要求.本文主要介绍为满足上述要求,作为三大无源器件之一的电感器的薄膜化进程,以及目前薄膜电感器的应用情况及发展前景展望.     

Laboratory Experiments in the Fabrication of Thick-Film and Thin-Film Integrated Circuits

The thin-film and thick-film technology of fabricating hybrid integrated circuits has become of increasing importance as requirements for precision components, such as in active filters and digital to analog converters, are imposed on present circuit designs. This paper describes a series of experiments used to demonstrate this technology at the undergraduate level. The main objective of these experiments was to allow the undergraduate student to acquire a working knowledge of how the two hybrid integrated circuits were fabricated. A secondary objective was to allow him to evaluate the two techniques in terms of the equipment used and the electrical results obtained. In addition, the equipment and techniques used for monolithic I-C fabrication were introduced by these experiments. The methods used to fabricate photomasks, copper-beryllium evaporation masks, thick-and thin-film conductors, and resistors are described.     

基于GPRS的电力负荷管理系统通信性能分析及解决方案

探讨了GPRS技术在电力负荷管理系统数据传输中的应用,相比于传统的通信网络,GPRS的网络覆盖和运行成本更加适合于电力负荷管理系统的应用。重点介绍了GPRS技术的特点、网络结构及实施方案,特别是对GPRS网络在使用过程中存在的问题及其解决方案进行了详细的说明。     

太阳电池用Cu-In-Se薄膜的电化学沉积

用CuInSe2制造的太阳电池是仅有的三种产业化的化合物薄膜太阳电池之一。电化学沉积CuInSe2的方法具有价格低、低温成膜、可大面积连续成膜、原材料消耗最少、无污染等特点。但是,电化学沉积中CuInSe2的组成难以控制、工艺参数的变化对组成的影响大,且多数条件上得到的是富铜薄膜。采用电化学沉积方法在钼箔上制备Cu-Se、In-Se和Cu-In-Se薄膜,对电沉积的工艺参数进行了测试,发现Cu-In-Se是一种诱导共沉积,虽然沉积膜不具备化学计量比,但具有一定的光电性能。     

Organic thin-film transistors for organic light-emitting flat-paneldisplay backplanes

The performance of organic thin-film transistors (OTFTs) has improved significantly in the last several years and it now appears likely that they will find application in low-cost large-area electronic applications. Active-matrix displays are of special interest and integration of OTFTs with organic light-emitting devices (OLEDs) in all-organic displays is particularly attractive. The device requirements for active-matrix OLED displays are very similar to those of active-matrix liquid crystal displays (AMLCDs) and can be satisfied with OTFTs fabricated using stacked pentacene active layers. Such devices have demonstrated field-effect mobility near 1.5 cm²/V·s, on/off current ratio near 10⁸, near-zero threshold voltage, and subthreshold slope less than 1.6 V/decade. These characteristics are similar to those obtained with hydrogenated amorphous silicon (a-Si:H) devices and such devices would allow the use of polymeric substrates with advantages in weight, ruggedness, and cost compared to glass substrates currently used with a-Si:H devices in AMLCDs     

平面薄膜电感的研究与开发现状

为满足电子系统的表面贴装技术、微组装技术发展的需要，对器件片式化、小型化、微型化的要求越来越高。而电感作为电路的三大基础性元件之一，其片式化、薄膜化势在必行。本文就近几年国内外片式薄膜电感的发展研究状况做一综述。     

UC Riverside develops carbon nanotube PEMFC electrodes

A research team headed by Professor Yushan Yan of the University of California at Riverside, under a contract with California-based Pacific Fuel Cell, has developed a fuel cell using carbon nanotube-based electrodes. The company believes that the use of multi-walled carbon nanotubes as a platinum support for PEM fuel cells will reduce the manufacturing cost of fuel cells, through improved platinum utilization.     

A review of thin-film resonator technology

Thin-film resonator technology has been under development for over 40 years as a means to reach higher frequencies than obtainable with conventional quartz-crystal technology. Using advances in microelectronic processing, thin films of piezoelectric materials are used to fabricate resonators and filters over a range of 500 MHz to 20 GHz. This article is a review of the thin-film resonator (TFR) technology that describes the core structures and issues and gives examples of filters and resonators that have been manufactured or demonstrated.     

现代紧凑型变电站--技术和经济的优化

从介绍寿命周期成本概念出发,讨论变电站技术经济优化准则,指出变电站新技术开发和应用的目标应是使寿命周期成本最小。讨论数字光电量测系统原理和技术,基于此技术的智能集成开关设备系统和控制与保护集成的自动化系统结构。分析由这些新技术和系统构成的现代紧凑型变电站的经济性和可靠性,指出现代紧凑型变电站是技术和经济的最优解决途径。     

基于BIM-5D技术的特高压换流站工程管控系统

提出了一种基于BIM-5D技术的特高压换流站工程管控能力提升方法,在BIM-5D系统整体框架上,利用多次自适应最小二乘曲线拟合和分段预警方法建立了施工进度和成本管控预警模型。采用挣得值法对预警模型进行了参数校正和预警阈值范围设置,获取最终的特高压换流站工程管控系统。结合具体案例对特高压换流站工程的施工进度和成本进行分析,并得到了相应的应用场景。案例分析结果表明,基于BIM-5D技术的特高压换流站工程管控系统,能够有效对施工进度和成本进行管控。     

CIGS薄膜太阳能电池研究进展

薄膜太阳电池以其低成本吸引越来越多的研究者。CIGS薄膜作为光伏材料,其光电转化效率高,性能稳定,CIGS薄膜太阳能电池成为各国研究的热点之一。近来研究主要关注CIGS薄膜太阳电池大面化、薄膜效率影响因素和工艺研究。本文主要介绍CIGS薄膜电池近年来的研究进展。     

现代储能技术应用概况及展望

综述了现代储能技术在电网中的应用,概述了各种型式的储能技术的特点及其应用场合,介绍了国内外MW级储能项目的发展情况,简单讨论了储能容量的配置、经济成本及其市场规模,最后介绍了我国储能产业化的相关政策和发展前景。     

低分辨率位置传感器永磁同步电机精确位置估计方法综述

伺服电机在装备制造、新能源和家电等领域有着广阔的应用,为得到高精度转子位置信息,通常采用旋转变压器或光电编码器等高分辨率位置码盘,但其价格普遍较高,增加了系统设计成本。而无传感器技术当前还很难全面满足工业及家电等领域的应用要求。低分辨率位置传感器永磁同步电机驱动技术是一种能够保证电机运行性能,同时能有效控制系统成本、提高系统可靠性的转子位置检测技术,受到国内外产业界的广泛关注。介绍开关型霍尔位置传感器的使用方法与工作原理,总结原始霍尔位置信息误差的来源与校正方法;重点讨论基于插值法、同步坐标系滤波器法和观测器法的转子位置/转速估算策略,从提高低分辨率位置传感器电机系统低速性能等方面分析和比较不同估算策略的原理、优缺点、适用范围及应用情况;最后,总结现有研究成果及有待解决的问题。     

无线网络（ZigBee）技术在LED智能照明系统中的应用

结合物联网技术对LED智能照明和传统照明进行了比较,将ZigBee无线网络技术应用于LED照明,组成智能管理网络。详细设计了该系统的硬件电路及软件,经对比,此系统比传统系统在节省布线、降低成本、后期维护等方面有着显著的优势,尤其是应用于合同能源管理中,节能效果更加显著。