汽车精密零件的清洗和碳氢化合物的清洗技术

1.前言 由于近几年来汽车的性能不断提高,采用减少污染环境的新技术,汽车制造工艺的质量管理显得极为重要,与质量管理有关的清洗工艺的重要性也越来越突出.     

汽车精密零件的清洗和碳氢化合物的清洗技术

1.前言 由于近几年来汽车的性能不断提高,采用减少污染环境的新技术,汽车制造工艺的质量管理显得极为重要,与质量管理有关的清洗工艺的重要性也越来越突出.     

盛美半导体设备(上海)有限公司

正盛美半导体设备(上海)有限公司是一家专注于集成电路制造产业中先进的湿法清洗及铜互连制程技术装备及工艺研发与生产的半导体装备公司,是中国少数几家具有世界领先技术及工艺的半导体装备制造商之一。公司立足于自主研发、精密制造和全球销售及服务,为芯片制造厂商提供最先进的装备及工艺。盛美半导体设备(上海)有限公司自主研发的空间交变相位移兆声波清洗技术解决了单片兆声波清洗能量分布均一性的技术难点,获得了优异的晶圆清洗效果,产品已销往韩国、中国台湾以及国内的主流集成电路制造公司。     

盛美半导体设备(上海)有限公司

正盛美半导体设备(上海)有限公司是一家专注于集成电路制造产业中先进的湿法清洗及铜互连制程技术装备及工艺研发与生产的半导体装备公司,是中国少数几家具有世界领先技术及工艺的半导体装备制造商之一。公司立足于自主研发、精密制造和全球销售及服务,为芯片制造厂商提供最先进的装备及工艺。盛美半导体设备(上海)有限公司自主研发的空间交变相位移兆声波清洗技术解决了单片兆声波清洗能量分布均一性的技术难点,获得了优异的晶圆清洗效果,产品已销往韩国、中国台湾以及国内的主流集成电路制造公司。     

盛美半导体设备(上海)有限公司

正盛美半导体设备(上海)有限公司是一家专注于集成电路制造产业中先进的湿法清洗及铜互连制程技术装备及工艺研发与生产的半导体装备公司,是中国少数几家具有世界领先技术及工艺的半导体装备制造商之一。公司立足于自主研发、精密制造和全球销售及服务,为芯片制造厂商提供最先进的装     

精密掩模清洗及保护膜安装工艺

光刻工艺及其成品率对掩模洁净度要求极高.通过一系列研究分析,找到了传统掩模清洗工艺的一些缺点和局限性,借鉴和参考了传统掩模清洗工艺,克服了其局限性.基于精密掩模对加工质量的高要求,安装了保护膜并改进了精密掩模清洗工艺,通过试验形成了最终工艺.新清洗工艺的开发满足了0.5μm掩模加工洁净度要求.     

大能量高重频脉冲激光智能清洗技术与装备(特邀)

高效、高质清洗是激光清洗的主要发展方向,也是实现激光清洗大规模工业应用的关键。国家重点研发计划“增材制造与激光制造”重点专项“大能量高重频脉冲激光智能清洗技术与装备”(共性关键技术类)针对航空和航天领域的装备制造和修护中,对精密、绿色、智能可控的新型清洗技术的迫切需求,解决多光束激光清洗多场耦合效应作用机制科学问题,突破大能量高重频纳秒激光器多维度增益协同调控、复杂曲面激光清洗残留物定位识别与路径规划和超宽幅面多光束联动拼接与能量控制等关键技术,开展大能量高重频纳秒脉冲激光器、激光高效高质清洗机制与关键技术和超宽幅面激光智能高效清洗成套工艺与装备研究。研究成果将在航天器表面热控涂层和飞机雷达罩表面除漆清洗去除中实现典型应用。     

等离子清洗工艺在芯片键合前的应用

等离子清洗工艺是应用于当代半导体、薄膜/厚膜电路等行业在元件封装前、芯片键合前的二次精密清洗工艺,清洗效果影响最终产品的质量.国内现有等离子清洗工艺存在清洗不均匀问题,针对这一问题,简单介绍了等离子清洗设备的基本原理,分析并介绍等离子体清洗工艺在芯片键合前的应用,并针对封装行业中的沾污问题提出了可行的解决方法.     

免清洗焊接技术的印刷模板设计及制造技术

印刷模板的合理设计和制造是免清洗焊接技术中的关键 ,也是SMT工艺质量的保证     

深亚微米时代清洗技术之应用与挑战 《半导体国际》第五届晶圆清洗技术研讨会

在标准的IC制造工艺中,涉及晶圆清洗和表面预处理的工艺步骤就有100多步,在整个ICN造的发展过程中,湿法清洗一直以来在晶圆清洗中占着主导地位,其中浸泡式(批处理)和喷雾式(单晶圆)目前     

基于SOPC/FPGA嵌入式的高频阻垢水处理器设计与开发

介绍高频电磁场阻垢技术原理,利用可编程芯片FPGA和SOPC嵌入式技术,开发带触摸屏高频阻垢水处理器系统,包括高频振荡信号的产生和大功率功放电路设计,带彩色触摸屏的人机交互界面及各种控制功能,给出系统的硬、软件设计,实现了系统智能化设计和实时监控功能。     

网络流量宏观行为分析的一种时序分解模型

大规模网络中的流量行为体现为一个相当复杂的非线性系统,目前国内外对它的研究还没有成熟的方法.文章考虑网络流量非线性的特点,通过不同的数学模型将流量时间序列分解成趋势成分、周期成分、突变成分和随机成分.根据分解,利用相应的数学工具分别建模四个相对简单的子成分以仿真复杂流量.使用分解模型分析CERNET主干网络和NSFNET主干网络的长期流量行为,并将分析结果同传统的ARIMA季节模型比较.通过比较仿真自相关函数和预报误差,发现分解模型在描述流量宏观行为时具有简单和高精度的优点.     

Dynamic behavior of water wells coupled to PV pumping systems

Evaluation of a water supply system requires an overall analysis of its behavior, including the well performance and drawdown characteristics. The response of the water well is usually characterized by a single relationship between water level and water flow, representing its quasi‐equilibrium behavior. However, for days with large and rapid variations of irradiance this relationship does not correspond to the well‐equilibrium curve. In order to simulate the well behavior it has been developed a model that takes into account the variation of water level, pressure at the entrance of the well and static pressure of the aquifer, all of them related to the water flow. The model also considers the energy conservation equation of the system through the relationship among hydraulic load, water flow, and collected irradiance. Results of simulations show that, for days with large variations in solar irradiance, the static and dynamic analysis exhibit large differences in the instantaneous water head. The dynamic analysis shows that the water well tends to attenuate the fluctuations of the water head through a negative feedback mechanism. The model helps to understand some facts observed in the field. For example, the dispersion of points in the flow rate versus solar irradiance curves. The maximum drawdown obtained with the dynamic model is considerably smaller than the one predicted with the quasi‐equilibrium analysis. That difference can represent some savings in terms of water well hardware (drilling, wiring, and piping) for programs involving the installation of a large number of systems. The slowdown of water column variations, shown by the dynamic model, signifies that the motor‐pump system is not so intensively demanded as the quasi‐equilibrium analysis would suggest, resulting in longer lifetime prospects. Copyright © 2007 John Wiley & Sons, Ltd.     

分布式网络行为审计系统设计与实现

网络行为审计技术是网络行为监管和取证的主要方法.文中针对现有网络行为审计系统存在的监管范围小、审计信息获取不全面等缺陷,设计并实现一种分布式记录、集中式审计的网络行为审计系统.它能够大范围、准确地获取用户各种网络行为信息,并具有很强的审计分析功能,不仅能够发现主机的异常行为,而且有助于发现僵尸主机,为网络取证提供了有效的技术手段.     

SIEMENS自动化系统应用于污水泵站的监控网络

随着城市建设的迅速发展，市政污水泵站的数量和规模也在不断地增加。通过构建城市污水泵站监控网络，实现整个过程无人自动化已迫在眉睫。结合SIEMENS自动化系统讨论了污水泵站的监控网络的设计构思及实现。系统结构简单、操作方便、运行可靠，满足生产中对各种工艺参数的要求。     

导引头目标干扰识别与抗干扰

为提高空战中复杂干扰环境下导弹的作战效能,提出一种新的导引头对目标干扰进行识别及抗干扰的方法一基于目标行为模式识别的抗干扰方法,并给出了导引头抗干扰技术方案。最后,分别仿真验证了该方法应用于雷达导引头和红外导引头抗干扰的有效性。     

DroidBet:event-driven automatic detection of network behaviors for Android applications

The most Android applications connect to Internet to communicate with the outside world.Applications’ network-related activities were reflected and described with network traffic.By analyzing and modeling network traffic of Android applications,network behaviors of Android applications could be subsequently characterized.Therefore,DroidBet:an event-driven network behavior automatic detection system was presented,to test and evaluate Android applications automatically.Firstly,a scenario simulation event library was built to simulate the events that applications may be executed in the process,so as to trigger the network behavior of the application as much as possible.Then,the test sequence based on the state transition analysis method was automatically generated,and the network behavior was dynamically collected during the application testing process.Finally,the machine learning method was used to learn and train the collected network behavior,and the network behavior model based on BP neural network was generated to detect the behavior of the unknown Android application.The experimental results show that DroidBet can effectively trigger and extract the network behavior of the application,which has the advantages of high accuracy and low resource cost.     

Retrieval of tropospheric water vapor scale height from horizontalturbulence structure

A scale height of the vertical water vapor distribution in the troposphere is shown to be related to the rate at which the total integrated water vapor (IWV) decorrelates with horizontal separation. This relationship is based on the departure from simple Kolmogorov behavior of the turbulence structure of the IWV as the horizontal separation becomes a significant fraction of the scale height of the three dimensional (3D) turbulence. The relationship is demonstrated by comparisons between direct measurements of the vertical water vapor distribution, by radiosondes, and coincident estimates of the horizontal turbulence structure, using the TOPEX Microwave Radiometer (TMR). This provides a new method by which to resolve some of the vertical structure of lower tropospheric water vapor from space. The turbulence structure estimator is applied to a larger body of TMR data to produce a sequence of images describing the dynamics of water vapor scale height across the tropical Pacific Ocean. The cyclical evolution of a basin scale east/west ridge of water vapor with high scale height near 5° north latitude is detected which is consistent with other observations of the Madden and Julian Oscillation. The general technique presented should be applicable to many other existing data sets which image the horizontal distribution of IWV, e.g., those of the Defense Meteorological Satellite Program's special sensor microwave/imagers     

基于WinCC的交流电机调速监控界面研究

基于WinCC(视窗控制中心)的交流电机调速监控系统的设计,采用了西门子公司(SIEMENS)全面开放的上位机监控系统WinCC组态软件,此软件既可用于小规模简单的过程监控,也可用于复杂的工控领域。根据现场实际情况,利用该软件创建动态的人机监控界面,实现了监控画面动态显示并进行清晰明确的过程监控,准确把握了系统当前的各种运行状况,简化了操作,提高了系统监控能力,保证了系统运行的安全性。     

移动机器人的宏行为控制设计

利用宏行为的概念和方法,设计一个移动机器人系统.通过对系统结构的分析,给出移动机器人的运动模型;通过对整个系统行为的分析和分解,给出了移动机器人的宏行为模型结构.利用这一模型,实现了在白色背景下跟踪黑色轨迹的快速行驶.实验数据表明,移动机器人对黑色轨迹的跟踪精度较高.