Performance analysis belongs to the domain of applied mathematics. The major domain of application in this book concerns telecommunications sys- tems and networks. We will mainly use stochastic analysis and probability theory to address problems in the performance evaluation of telecommuni- cations systems and networks. The first chapter will provide a motivation and a statement of several problems.
标签: Communications Performance Analysis Networks of
上传时间: 2020-05-31
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Modern day large power systems are essentially dynamic systems with stringent requirements of high reliability for the continuous availability of electricity. Reliability is contingent on the power system retaining stable operation during steady-state operation and also following disturbances. The subject of power sys- tem stability has been studied for many decades. With new developments, and there have been many over the past couple of decades, new concerns and problems arise that need to be studied and analysed. The objective of this book is a step in that direction though not ignoring the conventional and well-established approaches.
标签: Modelling Stability System Power
上传时间: 2020-06-07
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The author’s group has developed various chipless RFID tags and reader architectures at 2.45, 4–8, 24, and 60 GHz. These results were published extensively in the form of books, book chapters, refereed conference and journal articles, and finally, as patent applications. However, there is still room for improvement of chipless RFID sys- tems. In this book, we proposed advanced techniques of chipless RFID systems that supersede their predecessors in signal processing, tag design, and reader architecture.
上传时间: 2020-06-08
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管理员admin密码123456没有任何后门, 经过我的手已经全部修复完成!
上传时间: 2020-11-01
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STM32F407VGT6精确脉冲控制步进电机源码,采用STM32F407VGT6芯片,抛弃单脉冲输出方式,直接使用普通PWM输出方式精确输出脉冲个数,每个脉冲都可以改变频率和占空比。PWM+中断,简单粗暴。#include "sys.h"#include "delay.h"#include "pwm1.h"#include "pwm2.h"#include "pwm3.h"//注释见pwm1.c文件extern int count2;int main(void){ delay_init(168); //初始化延时函数 TIM2_Init(1,167); TIM3_Init(1,167); TIM5_Init(1,167); // delay_ms(1000); TIM2_OUTPUT(); TIM3_OUTPUT(); TIM5_OUTPUT(); while(1) { //TIM2每次输出完10个脉冲后间隔100ms再次输出 if(count2 >= 10){ delay_ms(100); TIM2_OUTPUT(); } }
标签: stm32f407vgt6 脉冲控制 步进电机
上传时间: 2021-10-26
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Research on microwave power amplififiers has gained a growing importance demanded by the many continuously developing applications which require such subsystem performance. A broad set of commercial and strategic systems in fact have their overall performance boosted by the power amplififier, the latter becoming an enabling component wherever its effificiency and output power actually allows functionalities and operating modes previously not possible. This is the case for the many wireless systems and battery-operated systems that form the substrate of everyday life, but also of high-performance satellite and dual-use systems.
上传时间: 2021-10-30
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1 虚拟机系统搭建2 源码编辑2.1 安装和升级必要的组件2.2 下载源码2.3 修改源码及编译2.4 源码配置2.4.1 后台管理界面为中文2.4.2 默认开启无线网络2.4.3 改SSID名称2.4.4 进入系统后,增加密码(密码以admin为例)2.4.5 修改后台登录的端口号2.4.6 支持3G模块功能( USB方式)( OpenWrt之PandoraBox)(华为E261)3 操作技巧3.1 覆盖配置文件(推荐编辑方式)3.2 推荐操作习惯3.3 编译技巧3.4 烧录技巧(含shell固件升级方式)3.4.1 通过UBOOT进行烧录3.4.2 进系统后通过命令行完成固件升级4 报错及解决方法4.1 Checking *libssl*... Failed.1 虚拟机系统搭建详情,参见: VirtualBox安装UbuntuKylin_ 刘云龙201504xx.docx;(VirtualBox安装流程;安装好后,在左上角“系统”菜单的“首选项”中选择“屏幕保护程序”,然后去掉左下角的“计算机空闲时激活屏幕保护程序”,然后按“关闭”,这个窗口是没有“应用”或“确定”之类的,直接关闭它就会保存。)2 源码编辑2.1 安装和升级必要的组件a. 选左上角的菜单 “应用程序 ”-附“件”-终“端”,进入命令行,然后输入sudo –sH,注意大小写,然后输入装系统时设置的用户密码,就能切换到root( 提示:输入密码的时候不会有* 之类的显示的,是完全不显示,部分人不必惊慌)。切换到root 是为了安装或升级部分必要的组件,有些组件需要root 权限。
上传时间: 2022-06-23
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本文主要针对CCD相机中的数据采集、传输及显示的需要,设计了基于USB的相应系统。该系统设计工作包括硬件和软件两个部分,硬件部分选用了Cypress公司的CY7C68013A作为USB通讯芯片,负责接收由A/D转换得到的图像数据,并通过其实现与PC机之间的USB数据通信。本系统设计的主要工作难点是系统软件的设计,包括固件程序、USB驱动程序和应用程序的设计三部分。其中,固件程序在Keil uVision2环境中开发;而USB驱动程序则通过编写inf驱动文件和设计GPIF波形,对CY7C68013A的GPIF(通用可编程接口)进行编程,实现了硬件上的识别和数据的高速传输;PC机上的应用程序利用Visual C++.net2003开发,通过调用EZ-USB FX2LP的CyUSB.sys驱动文件和CyAPL.lib程序库,完成了与硬件之间的数据传输,并能够在应用程序主界面上显示所采集的图像信息。本文最后对系统进行了测试,并与国外产品作了对比。测试的各性能参数结果表明采用USB实现CCD和主机之间的通讯,满足了相机对数据快速稳定传输的实时性要求,同时也符合了相机操作简单方便的实用性要求。
上传时间: 2022-06-23
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本系统是鄙公司研发的一款类似国外智能相机的一款基于计算机的智能视觉系统,可以有效缩短一个视觉项目的开发周期,降低电气工程师的应用门槛,只需要掌握一些图像处理算法的应用,便可解决一个视觉项目,无需计算机软件知识,只需要简单设定一些参数便可,对于设备商无需花大价钱使用国外的智能视觉系统,也没有必要花高工资请一个视觉开发工程师,为设备商降低成本,缩短视觉检测设备研发周期,此系统集成了大量的机器视觉行业的图像处理算法,和本团队多年的实际项目处理经验,还有丰富的外围通讯接口,轻松实现数据交换Admin:密码888888 user:111111
上传时间: 2022-07-17
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