This book is about global navigation satellite systems (GNSS), their two main instru- ments, which are a receiver and a simulator, and their applications. The book is based on an operational off-the-shelf real-time software GNSS receiver and off-the-shelf GNSS signalsimulator.Theacademicversionsofthesetoolsarebundledwiththisbookandfree for readers to use for study and research.
标签： Navigation Geophysics Satellite Digital and
上传时间： 2020-06-09
上传用户：shancjb
Since its release, Arduino has become more than just a development platform; it has become a culture built around the idea of open source and open hardware, and one that is reimagining computer science and education. Arduino has opened hardware development by making the starting skills easy to obtain, but retaining the complexities of real-world application. This combination makes Arduino a perfect environment for school students, seasoned developers, and designers. This is the first Arduino book to hold the title of “Pro,” and demonstrates skills and concepts that are used by developers in a more advanced setting. Going beyond projects, this book provides examples that demonstrate concepts that can be easily integrated into many different projects and provide inspiration for future ones. The focus of this book is as a transition from the intermediate to the professional.
上传时间： 2020-06-09
上传用户：shancjb
The chief objective of Electric Machinery continues to be to build a strong foundation in the basic principles of electromechanics and electric machinery. Through all of its editions, the emphasis of Electric Machinery has been on both physical insight and analytical techniques. Mastery of the material covered will provide both the basis for understanding many real-world electric-machinery applications as well as the foundation for proceeding on to more advanced courses in electric machinery design and control.
上传时间： 2020-06-10
上传用户：shancjb
The countless technological advances of the twentieth century require that futureengineering educationemphasizebridging thegapbetweentheoryand the real world.Thisedition hasbeenprepared withparticular attentiontothe needs of undergraduates, especially those who seek a solid foundation in control theory aswellas an ability tobridgethe gapbetween control theory and itsreal- world applications.To help the reader achieve this goal, computer-aided design accuracy checks (CADAC) are used throughout the text to encourage good habits of computerliteracy.Each CADAC uses fundamentalconcepts to ensure the viability of a computer solution.
标签： Analysis Control Linear Design System Fifth and
上传时间： 2020-06-10
上传用户：shancjb
Although state of the art in many typical machine learning tasks, deep learning algorithmsareverycostly interms ofenergyconsumption,duetotheirlargeamount of required computations and huge model sizes. Because of this, deep learning applications on battery-constrained wearables have only been possible through wireless connections with a resourceful cloud. This setup has several drawbacks. First, there are privacy concerns. Cloud computing requires users to share their raw data—images, video, locations, speech—with a remote system. Most users are not willing to do this. Second, the cloud-setup requires users to be connected all the time, which is unfeasible given current cellular coverage. Furthermore, real-time applications require low latency connections, which cannot be guaranteed using the current communication infrastructure. Finally, wireless connections are very inefficient—requiringtoo much energyper transferredbit for real-time data transfer on energy-constrained platforms.
标签： Embedded_Deep_Learning Algorithms
上传时间： 2020-06-10
上传用户：shancjb
基于界面操作的人脸心率检测的代码，通过摄像头实时采集人视频，并计算心率(Face the heart rate detection interface operation based on the code, through real-time acquisition one camera video, and rate)
上传时间： 2021-02-24
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Wherever possible the overall technique used for this series will be "definition by example" withgeneric formulae included for use in other applications. To make stability analysis easy we will usemore than one tool from our toolbox with data sheet information, tricks, rules-of-thumb, SPICESimulation, and real-world testing all accelerating our design of stable operational amplifier (op amp)circuits. These tools are specifically targeted at voltage feedback op amps with unity-gain bandwidths<20 MHz, although many of the techniques are applicable to any voltage feedback op amp. 20 MHz ischosen because as we increase to higher bandwidth circuits there are other major factors in closing theloop: such as parasitic capacitances on PCBs, parasitic inductances in capacitors, parasitic inductancesand capacitances in resistors, etc. Most of the rules-of-thumb and techniques were developed not justfrom theory but from the actual building of real-world circuits with op amps <20 MHz.
标签： 运算放大器
上传时间： 2021-11-01
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基于TMS320F2812 光伏并网发电模拟装置PROTEL设计原理图+PCB+软件源码+WORD论文文档,硬件采用2层板设计，PROTEL99SE 设计的工程文件，包括完整的原理图和PCB文件，可以做为你的学习设计参考。 摘要：本文实现了一个基于TMS320F2812 DSP芯片的光伏并网发电模拟装置，采用直流稳压源和滑动变阻器来模拟光伏电池。通过TMS320F2812 DSP芯片ADC模块实时采样模拟电网电压的正弦参考信号、光伏电池输出电压、负载电压电流反馈信号等。经过数据处理后，用PWM模块产生实时的SPWM 波，控制MOSFET逆变全桥输出正弦波。本文用PI控制算法实现了输出信号对给定模拟电网电压的正弦参考信号的频率和相位跟踪，用恒定电压法实现了光伏电池最大功率点跟踪（MPPT），从而达到模拟并网的效果。另外本装置还实现了光伏电池输出欠压、负载过流保护功能以及光伏电池输出欠压、过流保护自恢复功能、声光报警功能、孤岛效应的检测、保护与自恢复功能。系统测试结果表明本设计完全满定设计要求。关键词：光伏并网，MPPT，DSP Photovoltaic Grid-connected generation simulator Zhangyuxin，Tantiancheng，Xiewuyang(College of Electrical Engineering, Chongqing University)Abstract: This paper presents a photovoltaic grid-connected generation simulator which is based on TMS320F2812 DSP, with a DC voltage source and a variable resistor to simulate the characteristic of photovoltaic cells. We use the internal AD converter to real-time sampling the referenced grid voltage signal, outputting voltage of photovoltaic, feedback outputting voltage and current signal. The PWM module generates SVPWM according to the calculation of the real-time sampling data, to control the full MOSFET inverter bridge output sine wave. We realized that the output voltage of the simulator can track the frequency and phase of the referenced grid voltage with PI regulation, and the maximum photovoltaic power tracking with constant voltage regulation, thereby achieved the purpose of grid-connected simulation. Additionally, this device has the over-voltage and over-current protection, audible and visual alarm, islanding detecting and protection, and it can recover automatically. The testing shows that our design is feasible.Keywords: Photovoltaic Grid-connected，MPPT，DSP 目录引言 11. 方案论证 11.1. 总体介绍 11.2. 光伏电池模拟装置 11.3. DC-AC逆变桥 11.4. MOSFET驱动电路方案 21.5. 逆变电路的变频控制方案 22. 理论分析与计算 22.1. SPWM产生 22.1.1. 规则采样法 22.1.2. SPWM 脉冲的计算公式 32.1.3. SPWM 脉冲计算公式中的参数计算 32.1.4. TMS320F2812 DSP控制器的事件管理单元 42.1.5. 软件设计方法 62.2. MPPT的控制方法与参数计算 72.3. 同频、同相的控制方法和参数计算 8
标签： tms320f2812 光伏 并网发电 模拟 protel pcb
上传时间： 2021-11-02
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全网最全的autojs列子，有一千六百多的脚本文件,脚本内容包含：几十种类型的UI脚本，抖音、QQ、微信、陌陌、支付宝等自动化操作的脚本、还有部分协议列表，HTTP协议(POST、GET)上传下载，接码模块，百度文字识别api模块，文件操作模块：txt文本读一行删一行，等等其他例子QQ语音红包.jsqq语音红包，没加悬浮窗，我觉得自己用脚本引擎会好点.jsQQ语音输入(Tim版)(1).jsQQ语音输入(Tim版).jsQQ资料赞.jsqq轰炸机(1).jsqq轰炸机.jsQQ选图涂鸦.jsqq顺序点赞脚本.jsQQ，微信聊天辅助脚本(文本分割填充字符) v2.jsQQ，微信聊天辅助脚本(文本分割填充字符).jsqtiao.jsrawWindow求解.jsrelationship.jsrhinoneteasecloudmusic.jsRobot.jsROOT权限启动无障碍服务.jsRSA.jsscript.jsscroll的使用.jsSecure.jssetting.jssha256.jsshell开关飞行模式.jsshuabaoviod.jsSMSCODE.jsSmsCodeExtract.jssojson.com.jssoul_灵魂匹配.jsspinner例子.jsSqlDatabase2.jsss.jsstart(2).jssun_rise&set.jssurfaceView(简单示例).jsSwitch控件.jstcp连接客户端.jste.jstest(1).jstest(2).jstest(3).jstest(4).jstest.jstestTouch.jstestyinhe.jsTheWolf_API.jstoast图片加文字.jstoast替代函数.jstranslate.jsTrun(翻翻乐).jsts-00-dist.jsTS微信跳一跳满分(10000)飞速版.jsts跳一跳r9s最新版.jsTS跳一跳全机型通用版(2).jsts跳一跳全机型通用版(3).jsts跳一跳全机型通用版.jsTS跳一跳脚本正确显示方式（支持root）.jsTS跳一跳自动.jsTS跳一跳过检测.jstt.jsTTS(1).jstts.jstts2.jstts3.jsTTS抢语音红包，作者A酷安(?????)----锦，详细使用看代码注释.jstxt.jsuc答题.jsui 悬浮窗动画+滑动界面.jsUI(2).jsUI.jsuitest - 副本.jsui。.jsui下对话框文件选择器(1).jsui中的延时除了多线程有别的办法吗.jsui保存控件属性3.jsUI全选.jsUI切换.jsui列子.jsui右下角展开按钮.jsui多界面.jsui属性(1).jsui开关控件(1).jsui开关控件.jsUI文件选择.jsUI显示日志.jsUI画时钟作者xxoo.jsui相对布局.jsUI示例(支付UI).jsui示例app下方tabs.jsui示例下方tabs(1.0.0-1 修复宽度不适配问题).jsUI脚本使用无障碍的最佳实践.jsUI轮播图.jsui选择文件.jsUI验证码（有BUG）.jsuki_0.jsUki消息交互式回复.jsUnlock.jsUntitled-1.jsuntitled.jsUTF.jsvip视频解析2.1.jsvscode连接不上手机解决办法.jsWannaCry(仅为娱乐).jsWeather.jswebScript.jsWebViewClient的使用方法.jswebViewUA切换3.jswebView填充表单加alert.jsWebView多页面浏览(1).jsWebView多页面浏览.jswebView提取图片地址并加载.jswebView获取图片地址.jswebview获取网页原图.jswebview获取网页原图保存.jswebView输入关键词搜索.jsweb拦截修改.jsWeChat.jsWechatJumpingAI(2).jsWechatJumpingAI(3).jswechatjumpingai(4).jsWechatJumpingAI.jswife紧急掉线（autojs破解版专用）.js.jswifi设置代理(未完成).js.js
标签： autojs
上传时间： 2021-11-06
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This book addresses programmer attitudes, but it’s not some kind of psychology textbook. We’ll investigate many topics, including: Source code presentation Defensive coding techniques How to debug programs effectively Good teamworking skills Managing your source code Take a quick glance through the table of contents to see exactly what’s covered. What is the rationale behind my selection of topics? I’ve been mentor- ing trainee programmers for many years, and these are the topics that have come up time and time again. I’ve also worked in the software factory for long enough to have seen the recurring problems—I address these too. If you can conquer all of these programming demons, you’ll progress from an apprentice coder to a real code craftsman.
标签： excellent practice writing Craft Code code the of
上传时间： 2021-11-09
上传用户：danix800
