端子压接工艺分析及应用

本文通过端子压接与焊接的比较,以及端子压接的要求,阐述了以端子压接替代导线焊接的优势,并在PzK电控箱产品生产中得以应用,不仅避免了某些因焊接而带来的诸多问题,而且提高了生产效率。     

动车组压接工艺全过程质量控制

通过对影响动车组端子压接工艺质量因素的分析,根据端子压接的基本工艺过程,提出了从电缆检验、端子质量检验、匹配关系以及压接工艺操作规范等方面综合进行压接工艺全过程质量控制的概念,为压接工艺的质量检验提供检查项点和参考依据,并提出了检验的基本技术方法。     

压接连接工艺技术

文章通过压接连接工艺技术与锡焊工艺技术进行性能比较,提出压接连接工艺技术的优越性。并规定了其工艺操作的技术要求、性能要求和质量保证要求。     

压接工艺及装配技巧

主要针对低频连接器压接特点,进行了压接工艺应用研究.在工艺试验的基础上,掌握了压接工艺的关键要素,明确了压接控制要求和控制方法,提出了压接工艺要求.重点讨论了处理屏蔽线时的压接装配技巧,为生产和设计提供参考.     

插针线缆压接工艺技术

文章介绍了插针压接工艺过程的技术要求及质量分析,提出了检验压接的基本方法。     

PFMEA在压接装配中的应用研究

介绍了压接装配过程的技术要求及质最分析,明确了压接控制要求和控制方法,提出了压接工艺要求.为了保证压接连接过程的质量与可靠性,需要采用科学的方法来研究压接装配过程.将PFMEA这一可靠性研究工具引入压接装配过程,简介PFMEA的应用流程,并以某型电缆插针压接装配流程为例,说明应用PFMEA研究压接装配过程的实施方法.     

压接式F型连接器件的构造设计与连接方法

F型连接器件的构造设计和连接方法存在诸多问题,在工程施工和线路检修中表现为接触不良、电缆拉脱、射频泄漏、中心接触器件分离、漏水短路和打火拉弧等故障。针对以上问题,进行了一系列技术创新,研制了一种压接式F型连接器件,介绍压接式F型连接器件的构造设计与连接方法。     

大截面导线压接技术的研究与优化

整个电力系统有许多的组成部分,架线施工就是其中非常重要的一种,而在架线施工中又有诸多环节,十分关键的一个环节就是导线压接的施工.由于大截面导线压接技术的操作特殊性,在施工过程中要格外注意压接面的细节处理,并与普通导线的压接进行横向对比,找到最适合大截面导线压接技术的操作方法.对施工环节进行严格管控和审核,因为一点点的操作失误都有可能导致出现导线连接处的松动甚至导线断裂等情况,影响电路流转.本文以此出发,研究大截面导线的压接技术.     

XKE连接器压接工艺实验研究

介绍了压接工艺技术的概念及特点;比较了压接技术与焊接技术相比的优点：无需外接电源、可靠性高、体积小和质量轻等;针对手动SYQ-001/002型压接工具与XKE连接器开展了相关工艺研究;利用拉脱力实验仪采集了三组共15个样本的拉脱力实验数据;通过对拉脱力实验数据的分析和对断层图片的判读,提出了影响压接质量的五个重要因素;总结了压接技术中常见的故障模式与故障原因。     

压接型连接器中导线不匹配的处理

在电缆生产过程中,常常会遇到压接连接器与导线不匹配的问题,由于这类问题在军工行业中尚没有统一的工艺规范,所以存在着各种各样操作,如果操作不规范会给电缆的可靠性带来问题.对不规范的操作进行了阐述,对压接连接器与导线不匹配装配提出了死接头转接法,实践证明效果很好.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks