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[其他] EBL基本组成及工作原理

EBL(electron beam lithography, EBL,又称电子束暴光系统)是一种利用电子束在工件面上扫描直接产生图形的装置。由于SEM、STEM及FIB的工作方式与电子束曝光机十分相近,美国JC Nabity Lithography Systems公司是最早研发了基于改造商品SEM、STEM或FIB的电子束曝光装置(Nanometer Pattern Generation System纳米图形发生系统,简称NPGS,又称电子束微影系统)。电子束曝光技术具有可直接刻画精细图案的优点,且高能电子的波长短(< 1 nm),可避免绕射效应的困扰,是实验室制作微小纳米电子元件最佳的选择。相对于购买昂贵的专用电子束曝光机台,以既有的SEM等为基础,外加电子束控制系统,透过电脑界面控制电子显微镜中电子束之矢量扫描,以进行直接刻画图案,在造价方面可大幅节省,且兼具原SEM 的观测功能,在功能与价格方面均具有优势。
EBL (electron beam lithography, EBL, also known as electron beam exposure system) is a device that uses electron beam to scan the workpiece surface to generate patterns directly. Because the working mode of SEM, stem and FIB is very similar to that of electron beam lithography machine, JC sodium lithography systems is the first company to develop electron beam lithography device (NPGS) based on modified products SEM, stem or fib. Electron beam lithography has the advantages of directly depicting fine patterns, and the wavelength of high-energy electrons is short (< 1 nm), which can avoid the diffraction effect. It is the best choice for making micro nano electronic components in the laboratory. (2020-12-10, PDF, 3609KB, 下载1次)

http://www.pudn.com/Download/item/id/1607580885585632.html

[其他] VK36N10I规格书_v1

1.概述: VK36N10I具有10个触摸按键,可用来检测外部触摸按键上人手的触摸动作。该芯片具有较高的集成度,仅需极少的外部组件便可实现触摸按键的检测。提供了I2C输出功能,可方便与外部MCU 之间的通讯,实现设备安装及触摸引脚监测目的。芯片内部采用特殊的集成电路,具有高电源电压抑制比,可减少按键检测错误的发生,此特性保证在不利环境条件的应用中芯片仍具有很高的可靠性。此触摸芯片具有自动校准功能,低待机电流,抗电压波动等特性,为各种触摸按键的应用提供了一种简单而又有效的实现方法。 罗丹 18823663425(W.X)
1. Overview: Vk36n10i has 10 touch buttons, which can be used to detect the human touch action on the external touch keys. The chip has a high degree of integration, only a few external components can be used to detect the touch button. The communication between the I 2C and the external device is convenient and can be installed. Special integrated circuit is used in the chip, which has high power supply voltage rejection ratio, which can reduce the occurrence of key detection error. This feature ensures that the chip still has high reliability in the application of adverse environmental conditions. The touch chip has the characteristics of automatic calibration, low standby current and anti voltage fluctuation. It provides a simple and effective method for the application of various touch buttons. (2020-08-22, PDF, 681KB, 下载0次)

http://www.pudn.com/Download/item/id/1598079607345559.html

[其他] 无人驾驶智能车导航系统控制研究

最终得到具有更高精度、更强抗扰动能力的滤波器,以满足无人驾驶智能车控制系统的需求。
Finally, the filter with higher precision and stronger anti disturbance ability is obtained to meet the demand of the control system of the driverless intelligent vehicle. (2020-05-30, PDF, 4230KB, 下载2次)

http://www.pudn.com/Download/item/id/1590818901641601.html

[其他] 2741_EIA_RS-232-E

该标准于1991年7月获得批准,它是一套规范,适用于数据终端设备(DTE)和数据电路终端设备(DCE)之间的数据传输。 它定义了接口电路功能及其相应的连接器引脚分配。 更新的标准还包括较小的替代(26针)连接器的规范。 支持全双工或半双工操作,以高达20K bps的速度进行同步或异步传输。
The standard, approved in July 1991, is a set of specifications that applies to the transfer of data between data terminal equipment (DTE) and data circuit-terminating equipment (DCE). It defines the interface circuit functions and their corresponding connector pin assignments. The updated standard also includes specifications for a smaller alternative (26-pin) connector. (2020-03-10, PDF, 2377KB, 下载1次)

http://www.pudn.com/Download/item/id/1583799223601504.html

[其他] heavy overload forecasting based on RF

针对使用传统分类器预测配变重过载会因为重过载样本率较低而带来的总正确率很高,重过载预测正确率却很低这一问题,将重抽样与随机森林理论引入分类模型中,构建重抽样-随机森林分类器对配变重过载进行预测。结果表明,新方法在预测配变日重过载类型、重过载开始与结束时间、重过载严重程度方面有较高的准确率。
For the problem of using the traditional classifier to predict the distribution of heavy overload, the total correct rate is high because of the low overload sample rate, and the accuracy of the heavy overload prediction is very low. The resampling and random forest theory are introduced into the classification model. In the construction, the re-sampling-random forest classifier is used to predict the heavy-duty overload. The results show that the new method has higher accuracy in predicting the type of daily variable overload, the start and end time of heavy overload, and the severity of heavy overload. (2019-08-06, PDF, 345KB, 下载1次)

http://www.pudn.com/Download/item/id/1565063483851758.html

[其他] trc105

TRC105是一款单芯片,多通道,低功耗的UHF收发器。 它专为300至510 MHz频率范围内的低成本,大容量,双向短程无线应用而设计。 TRC105是FCC&ETSI认证。 所有关键的RF和基带功能都集成在TRC105中,最大限度地减少了外部元件数量,并简化和加快了设计。 微控制器,RF SAW滤波器,12.8 MHz晶振和一些无源器件都是创建完整,可靠的无线电功能所需要的。 TRC105集成了一组低功耗状态以减少电流消耗并延长电池寿命。 TRC105的小尺寸和低功耗使其成为各种短程无线电应用的理想选择。 TRC105符合指令2002/95 / EC(RoHS)。
TRC105 is a single chip, multi-channel, low power UHF transceiver. It is designed for low cost, high volume, two-way short range wireless applications in the 300 to 510 MHz frequency range. The TRC105 is FCC & ETSI certifiable. All critical RF and base-band functions are integrated in the TRC105, minimizing external component count and simplifying and speeding design-ins. A microcontroller, RF SAW filter, 12.8 MHz crystal and a few passive components are all that is needed to create a complete, robust radio function. The TRC105 incorporates a set of low-power states to reduce current consumption and extend battery life. The small size and low power consumption of the TRC105 make it ideal for a wide variety of short range radio applications. The TRC105 complies with Directive 2002/95/EC (RoHS). (2018-04-19, PDF, 3040KB, 下载5次)

http://www.pudn.com/Download/item/id/1524150757556413.html

[其他] 视频采集与传输系统

论文中采用基于PXA270微处理器的Liod开发平台,将嵌入式I jnux技术与H.264视频通信技术相结合,提供了一个基于嵌入式视频服务器的H.264实时视频采集与网络传输系统的方案模型,对实际嵌入式视频通信系统的设计开发,具有借鉴意义和实用价值。
In this paper, the Liod development platform based on PXA270 microprocessor is used. The embedded I jnux technology and H.264 video communication technology are combined to provide a scheme model of the real-time video acquisition and network transmission system based on the embedded video server, which is of reference and practical value for the design and development of the actual embedded visual frequency communication system. (2018-04-01, PDF, 6775KB, 下载1次)

http://www.pudn.com/Download/item/id/1522583632999715.html

[其他] 一种变M_T测速方法的研究与实验

伺服电机的编码器本身具有精度高、分辨能力强等优点,但采用不同的测速方法获得的精度也不相同。
The encoder of the servo motor has the advantages of high precision and strong resolution, but the accuracy of using different speed measuring methods is different. (2018-03-22, PDF, 1802KB, 下载1次)

http://www.pudn.com/Download/item/id/1521686171458379.html

[其他] ISO11898

CAN是控制器局域网络(Controller Area Network, CAN)的简称,是由以研发和生产汽车电子产品著称的德国BOSCH公司开发的,并最终成为国际标准(ISO 11898),是国际上应用最广泛的现场总线之一。
ISO 11898 Road Vehicles-Controller Area Network(CAN) (2017-12-18, PDF, 3900KB, 下载9次)

http://www.pudn.com/Download/item/id/1513601894955602.html

[其他] Improving wet clutch engagement with

将强化学习方法应用到离合器的接合控制,旨在获得快速平稳的接合,伴随着较小的转矩损失。
A common approach when applying reinforcement learning to address control problems is that of first learning a policy based on an approximated model of the plant, whose behavior can be quickly and safely explored in simulation; and then implementing the obtained policy to control the actual plant. Here we follow this approach to learn to engage a transmission clutch, with the aim of obtaining a rapid and smooth engagement, with a small torque loss. Using an approximated model of a wet clutch, which simulates a portion of the whole engagement, we first learn an open loop control signal, which is then transferred on the actual wet clutch, and improved by further learning with a different reward function, based on the actual torque loss observed. (2017-07-05, PDF, 1087KB, 下载3次)

http://www.pudn.com/Download/item/id/1499219366396649.html

[其他] MK-introduction

Mikrokopter 的 wiki 网站上大部分是德文或者英文的材料,加之制作 MK 版四旋翼飞行器需要很多细节方面的东西,
The Mikrokopter the wiki site the majority of German or English materials need a lot of the details of things, coupled with production of the MK version of four-rotor aircraft (2012-03-23, PDF, 4974KB, 下载80次)

http://www.pudn.com/Download/item/id/1803978.html

[其他] computer_systems_a_programmers

深入理解计算机操作系统 英文 2th 本书从程序员的视角详细阐述计算机系统的本质概念,并展示这些概念如何实实在在地影响应用程序的正确性、性能和实用性。全书共12章,主要内容包括信息的表示和处理、程序的机器级表示、处理器体系结构、优化程序性能、存储器层次结构、链接、异常控制流、虚拟存储器、系统级I/O、网络编程、并发编程等。书中提供大量的例子和练习,并给出部分答案,有助于读者加深对正文所述概念和知识的理解。   本书的最大优点是为程序员描述计算机系统的实现细节,帮助其在大脑中构造一个层次型的计算机系统,从最底层的数据在内存中的表示到流水线指令的构成,到虚拟存储器,到编译系统,到动态加载库,到最后的用户态应用。通过掌握程序是如何映射到系统上,以及程序是如何执行的,读者能够更好地理解程序的行为为什么是这样的,以及效率低下是如何造成的。
Book detail from the programmer s perspective the essence of the concept of computer systems, and show how these concepts affect the real accuracy of the application, performance and practicality. The book is 12 chapters, including information representation and processing, the program said the machine-level, processor architecture, optimizing application performance, memory hierarchy, links, exception control flow, virtual memory, system-level I/O, network programming , concurrent programming. The book provides numerous examples and exercises, and gives part of the answer, as described in the text help readers to deepen understanding of concepts and knowledge. The biggest advantage of this book is for programmers to describe the implementation details of computer systems to help them in the brain to construct a hierarchical computer system, from the underlying data representation in memory instructions to the pipeline structure, to the virtual memory, to Build systems to dynamic load (2011-05-11, PDF, 4258KB, 下载10次)

http://www.pudn.com/Download/item/id/1527717.html

[其他] MAN-switch-configuration-experience

在城域网交换机日常维护中经常会发现,一些申告有丢包、大延时甚至瞬间 中断的以太网专线接入故障中都是因为交换机端口设置不规范,将速率和双工模 式设成了自动协商,如果光电收发器和用户端口也都设置为这一状态,那么会导 致使用设置为10Mbps/100Mbps 自适应的光收发器和用户端网卡用户,实际接入 速率为全双工100Mbps,这样的话该用户的实际吞吐能力可达到200Mbps;另一 方面,因有些光收发器或用户端设备不具备自协商功能或被设置为10Mbps (100Mbps) 全双工, 从而导致交换机端口于用户端设备自协商到10Mbps (100Mbps)半双工,进而导致接入链路延时大、丢包乃至瞬间中断。
MAN switch in the routine maintenance is often found that some declaration have packet loss, delay or even big moment Ethernet Private Line Access interrupted because of failure in the switch port settings are not standardized, the speed and duplex mode Type set into auto-negotiation, if the optical transceiver and the user ports are also set to this state, will lead To use the set to 10Mbps/100Mbps adaptive optical transceivers and client card users, the actual access Rate full-duplex 100Mbps, so the actual throughput of the user can achieve 200Mbps another Respect, because some optical transceiver or CPE does not have auto-negotiation function or set to 10Mbps (100Mbps) full duplex, leading to a switch port on the CPE from the negotiation to 10Mbps (100Mbps) half duplex, which led to major access link delay, packet loss and even the moment interrupted. (2011-01-17, PDF, 61KB, 下载3次)

http://www.pudn.com/Download/item/id/1413883.html

[其他] Data_fusion_Fisher_theroy

针对多个特征指标的多传感器数据融合问题,将Fisher理论和多数投票法相结合进行数据融合来增加识别率。该方法首先通过Fisher理论得到多个判别函数,然后通过多数投票法继续对得到的判别进行分类得到最后的识别决策。该方法适合多个特征目标识别,计算简单。易于实现
Indicators for multiple features multi-sensor data fusion problem, Fisher majority vote of the Combination of theory and data fusion to increase the recognition rate. This method first by Fisher theory of multiple discriminant function, and then by a majority vote method continues to be the discriminant classification to be the final identification of decision-making. This method is suitable for various characteristics of target identification, easy to compute. Is easy to implement (2010-02-06, PDF, 188KB, 下载42次)

http://www.pudn.com/Download/item/id/1060425.html

[其他] Intel_82371AB

Intel 82371AB南桥的资料,内有各种总线各种寄存器的功能说明和使用方法,对底层开发非常有用
Intel 82371AB Nanqiao information, there are a variety of bus features a variety of register descriptions and use of the bottom of the development of very useful (2009-01-26, PDF, 1139KB, 下载4次)

http://www.pudn.com/Download/item/id/635577.html

[其他] jmf602

SATA接口SSD控制器介绍以及支持NAND FLASH列表,目前比较流行的低成本SSD方案.
SATA interface SSD controller and support for NAND FLASH, introduced a list of currently popular low-cost SSD program. (2008-12-30, PDF, 242KB, 下载185次)

http://www.pudn.com/Download/item/id/620532.html

[其他] max232

MAX220–MAX249系列线驱动器/接收器,专为EIA/TIA- 232E以及V.28/V.24通信接口设计,尤其是无法提供±12V 电源的应用。 这些器件特别适合电池供电系统,这是由于其低功耗 关断模式可以将功耗减小到5μW以内。MAX225、 MAX233、MAX235以及MAX245/MAX246/MAX247 不需要外部元件,推荐用于印刷电路板面积有限的 应用。
MAX220-MAX249 family of line driver/receiver, designed for EIA/TIA-232E and V.28/V.24 communication interface design, especially unable to provide ± 12V power supply applications. These devices are particularly suitable for battery-powered systems, this is because of its low-power shutdown mode power consumption can be reduced to less than 5μW. MAX225, MAX233, MAX235 and MAX245/MAX246/MAX247 the need for external components, recommended for the limited area of the printed circuit board applications. (2008-12-24, PDF, 520KB, 下载3次)

http://www.pudn.com/Download/item/id/614672.html

[其他] MzL728-240128LCDv1.0

本文档详细介绍T6963C控制器的240×128图形点阵液晶模块的驱动编写过程,包括操作时序的详解、LCD底层控制方法等
This document details T6963C controller 240 × 128 dot-matrix graphic LCD module driver preparation process, including timing of detailed operations, LCD control methods such as bottom (2008-12-03, PDF, 599KB, 下载37次)

http://www.pudn.com/Download/item/id/595363.html

[其他] fuzzyPID

当前大多数模糊系统的推理机都是以交规则的形式出现,随着输入的增加,规则的数目将呈指数增长,出现了规则组合爆炸的问题。采用并规则设计的一种模糊PID控制器,解决了规则爆炸的问题,同时改善了系统的动态性能和实时性。 (2008-07-15, PDF, 811KB, 下载34次)

http://www.pudn.com/Download/item/id/510910.html

[其他] Learning-Features-for-Tracking

基于在线特征学习机制的跟踪算法,本论文拟实现一个基于boosting的分类器在线学习算法,并将之应用于视觉目标跟踪。
Online learning mechanism based on the characteristics of the tracking algorithm, this paper intends to achieve a classifier based on boosting online learning algorithm, and applied to the visual target tracking. (2008-04-22, PDF, 9065KB, 下载42次)

http://www.pudn.com/Download/item/id/443696.html
总计:225