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Much has been written concerning the manner in which healthcare is changing, with
a particular emphasis on how very large quantities of data are now being routinely
collected during the routine care of patients. The use of machine learning meth-
ods to turn these ever-growing quantities of data into interventions that can improve
patient outcomes seems as if it should be an obvious path to take. However, the
field of machine learning in healthcare is still in its infancy. This book, kindly
supported by the Institution of engineering andTechnology, aims to provide a “snap-
shot” of the state of current research at the interface between machine learning and
healthcare.
標(biāo)簽：
Technologies
Healthcare
Learning
Machine
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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基于TMS320F2812 光伏并網(wǎng)發(fā)電模擬裝置PROTEL設(shè)計(jì)原理圖+PCB+軟件源碼+WORD論文文檔,硬件采用2層板設(shè)計(jì)，PROTEL99SE 設(shè)計(jì)的工程文件，包括完整的原理圖和PCB文件，可以做為你的學(xué)習(xí)設(shè)計(jì)參考。 摘要：本文實(shí)現(xiàn)了一個(gè)基于TMS320F2812 DSP芯片的光伏并網(wǎng)發(fā)電模擬裝置，采用直流穩(wěn)壓源和滑動(dòng)變阻器來(lái)模擬光伏電池。通過(guò)TMS320F2812 DSP芯片ADC模塊實(shí)時(shí)采樣模擬電網(wǎng)電壓的正弦參考信號(hào)、光伏電池輸出電壓、負(fù)載電壓電流反饋信號(hào)等。經(jīng)過(guò)數(shù)據(jù)處理后，用PWM模塊產(chǎn)生實(shí)時(shí)的SPWM 波，控制MOSFET逆變?nèi)珮蜉敵稣也?。本文用PI控制算法實(shí)現(xiàn)了輸出信號(hào)對(duì)給定模擬電網(wǎng)電壓的正弦參考信號(hào)的頻率和相位跟蹤，用恒定電壓法實(shí)現(xiàn)了光伏電池最大功率點(diǎn)跟蹤（MPPT），從而達(dá)到模擬并網(wǎng)的效果。另外本裝置還實(shí)現(xiàn)了光伏電池輸出欠壓、負(fù)載過(guò)流保護(hù)功能以及光伏電池輸出欠壓、過(guò)流保護(hù)自恢復(fù)功能、聲光報(bào)警功能、孤島效應(yīng)的檢測(cè)、保護(hù)與自恢復(fù)功能。系統(tǒng)測(cè)試結(jié)果表明本設(shè)計(jì)完全滿定設(shè)計(jì)要求。關(guān)鍵詞：光伏并網(wǎng)，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 目錄引言 11. 方案論證 11.1. 總體介紹 11.2. 光伏電池模擬裝置 11.3. DC-AC逆變橋 11.4. MOSFET驅(qū)動(dòng)電路方案 21.5. 逆變電路的變頻控制方案 22. 理論分析與計(jì)算 22.1. SPWM產(chǎn)生 22.1.1. 規(guī)則采樣法 22.1.2. SPWM 脈沖的計(jì)算公式 32.1.3. SPWM 脈沖計(jì)算公式中的參數(shù)計(jì)算 32.1.4. TMS320F2812 DSP控制器的事件管理單元 42.1.5. 軟件設(shè)計(jì)方法 62.2. MPPT的控制方法與參數(shù)計(jì)算 72.3. 同頻、同相的控制方法和參數(shù)計(jì)算 8
標(biāo)簽：
tms320f2812
光伏
并網(wǎng)發(fā)電
模擬
protel
pcb
上傳時(shí)間：
2021-11-02
上傳用戶：
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It all started rather innocuously. I walked into Dr GT Murthy’s office one fine day, andchanged my life. “Doc” was then the General Manager, Central R&D, of a very largeelectrical company headquartered in Bombay. In his new state-of-the-art electronics center,he had hand-picked some of India’s best engineers (over a hundred already) ever assembledunder one roof. Luckily, he too was originally a Physicist, and that certainly helped me gainsome empathy. Nowadays he is in retirement, but I will always remember him as athoroughly fair, honest and facts-oriented person, who led by example. There were severalthings I absorbed from him that are very much part of my basic engineering persona today.You can certainly look upon this book as an extension of what Doc started many years agoin India … because that’s what it really is! I certainly wouldn’t be here today if I hadn’t metDoc. And in fact, several of the brash, high-flying managers I’ve met in recent years,desperately need some sort of crash course in technology and human values from Doc!
標(biāo)簽：
開(kāi)關(guān)電源
上傳時(shí)間：
2021-11-23
上傳用戶：
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基于LabVIEW2012FPGA模式的數(shù)據(jù)采集和存儲(chǔ)系統(tǒng)摘 要：為了提高數(shù)據(jù)采集系統(tǒng)精度，減少開(kāi)發(fā)成本，提高開(kāi)發(fā)效率，基于LabVIEW虛擬儀器開(kāi)發(fā)工具研究并設(shè)計(jì)了一
種數(shù)據(jù)采集系統(tǒng)。該系統(tǒng)采用FPGA編程模式和網(wǎng)絡(luò)流技術(shù)實(shí)現(xiàn)大批量數(shù)據(jù)實(shí)時(shí)傳輸，并對(duì)數(shù)據(jù)進(jìn)行分析處理和存儲(chǔ)。系
統(tǒng)硬件采用美國(guó)NI實(shí)時(shí)控制器CRIO?9025，實(shí)現(xiàn)16路數(shù)據(jù)可靠采集與存儲(chǔ)。實(shí)驗(yàn)仿真及實(shí)際運(yùn)行結(jié)果表明該數(shù)據(jù)采集系
統(tǒng)能夠精確地對(duì)數(shù)據(jù)進(jìn)行實(shí)時(shí)采集以及分析處理，達(dá)到了項(xiàng)目要求。
關(guān)鍵詞：FPGA；FIFO；網(wǎng)絡(luò)流；數(shù)據(jù)采集系統(tǒng)；SQL數(shù)據(jù)庫(kù)
中圖分類(lèi)號(hào)：TN98?34 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1004?373X（2014）14?0142?04
Data acquisition and storage system based on LabVIEW 2012FPGA pattern
WANG Shu?dong1,2
，WEI Kong?zhen1
，LI Xiao?pei1
（1. College of Electrical and Information engineering，Lanzhou University of Technology，Lanzhou 730050，China；
2. Gansu Key Laboratory for Advanced Industrial Process Control，Lanzhou 730050，China）
標(biāo)簽：
labview
fpga
數(shù)據(jù)采集
上傳時(shí)間：
2022-02-18
上傳用戶：
-
基于FPGA設(shè)計(jì)的相關(guān)論文資料大全 84篇用FPGA實(shí)現(xiàn)FFT的研究
劉朝暉 韓月秋
摘 要 目的 針對(duì)高速數(shù)字信號(hào)處理的要求，給出了用現(xiàn)場(chǎng)可編程門(mén)陣列(FPGA)實(shí)現(xiàn)的
快速傅里葉變換(FFT)方案.方法 算法為按時(shí)間抽取的基4算法，采用遞歸結(jié)構(gòu)的塊浮點(diǎn)運(yùn)
算方案，蝶算過(guò)程只擴(kuò)展兩個(gè)符號(hào)位以適應(yīng)雷達(dá)信號(hào)處理的特點(diǎn)，乘法器由陣列乘法器實(shí)
現(xiàn).結(jié)果 采用流水方式保證系統(tǒng)的速度，使取數(shù)據(jù)、計(jì)算旋轉(zhuǎn)因子、復(fù)乘、DFT等操作協(xié)
調(diào)一致，在計(jì)算、通信和存儲(chǔ)間取得平衡，避免了瓶頸的出現(xiàn).結(jié)論 實(shí)驗(yàn)表明，用FPGA
實(shí)現(xiàn)高速數(shù)字信號(hào)處理的算法是一個(gè)可行的方案.
關(guān)鍵詞 離散傅里葉變換； 快速傅里葉變換； 塊浮點(diǎn)運(yùn)算； 可編程門(mén)陣列
分類(lèi)號(hào) TP39； TN957.511
Implementation of FFT with FPGA Technology
Liu Zhaohui Han Yueqiu
(Department of Electronics engineering, Beijing Institute of Technology, Beijing 100081)
Abstract Aim To propose a scheme for implementing FFT with FPGA in accor-dance with the
requirement for high speed digital signal processing. Methods The structure of FPGA and
requirement of system were considered in the experiment, radix-4 algorithm of DIT and recursive
structure were adopted. The group float point arithmetic operation was used in the butterfly and the
array multiplier was used to realize multiplication. Results The pipeline pattern was used to ensure
the system speed, it made fetching data, calculating twiddle factor, complex multiplication and D
標(biāo)簽：
fpga
上傳時(shí)間：
2022-03-23
上傳用戶：
-
實(shí)驗(yàn)教學(xué)一直是工科教學(xué)中不可或缺的組成部分,對(duì)培養(yǎng)學(xué)生的動(dòng)手能力,獨(dú)立思考能力,創(chuàng)新思維與發(fā)散思維具有重要的作用。針對(duì)目前電路教學(xué)實(shí)驗(yàn)中電路仿真實(shí)驗(yàn)與實(shí)物電路實(shí)驗(yàn)各自獨(dú)立,無(wú)法統(tǒng)一問(wèn)題,提出將仿真電路實(shí)驗(yàn)與實(shí)物電路實(shí)驗(yàn)有機(jī)的結(jié)合同步操作,并使用Web發(fā)布實(shí)現(xiàn)遠(yuǎn)程實(shí)驗(yàn)操作。采用Multisim作為電路實(shí)驗(yàn)仿真平臺(tái),NI Eiviss II作為實(shí)物電路實(shí)驗(yàn)硬件平臺(tái),運(yùn)用LabVIEW整合Multisim電路仿真實(shí)驗(yàn)與實(shí)物電路實(shí)驗(yàn),實(shí)現(xiàn)仿真與實(shí)物實(shí)驗(yàn)有機(jī)結(jié)合,兩種實(shí)驗(yàn)可同步進(jìn)行。學(xué)生在仿真實(shí)驗(yàn)中先可探索實(shí)驗(yàn),然后做實(shí)物實(shí)驗(yàn)。同時(shí)運(yùn)用LabVIEW開(kāi)發(fā)出實(shí)驗(yàn)過(guò)程人機(jī)交互操作接口界面,使用過(guò)程中效果良好。Experimental teaching has always been an indispensable part of engineering education.And it always plays an important role in cultivating students'practical ability,independent thinking ability,innovative thinking and divergent thinking.But simulation experiment and physical experiment cannot be unified in the circuit teaching experiment at present.In order to solve this problem,this paper proposes to combine organically the simulation circuit experiment with physical circuit experiment,and synchronously operate them.This paper uses the WEB publishing to achieve remote experimental operation.Multisim is used as the circuit simulation platform,and NI Eiviss II is used as the physical circuit hardware platform.Multisim circuit simulation experiment and physical circuit experiment are implemented by LabVIEW to realize the combination of simulation experiment and physical experiment.Students do explore experiments in simulation experiment firstly,and then do physical experiment.And this paper uses LabVIEW to develop the experimental man-machine interface.
標(biāo)簽：
multisim
labview
上傳時(shí)間：
2022-04-05
上傳用戶：
-
EPLAN EEC ONE的中文版手冊(cè)，屬于eplan的高端應(yīng)用。
標(biāo)簽：
eplan
上傳時(shí)間：
2022-05-05
上傳用戶：
-
說(shuō)明： STM8單片機(jī)連接CAN芯片 MCP2515 的源碼，已經(jīng)通過(guò)工程驗(yàn)證。(MCP2515 CAN chip STM8 MCU connections of the source has been verified by engineering.)
標(biāo)簽：
stm8
單片機(jī)
上傳時(shí)間：
2022-05-17
上傳用戶：
-
說(shuō)明： 合泰單片機(jī)HT66F50例程工程源程序，合泰各種例程demo都在里面(HT66F50 routine engineering source program of Hetai single chip microcomputer)
標(biāo)簽：
單片機(jī)
上傳時(shí)間：
2022-06-06
上傳用戶：默默
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Mathematical modeling has become an important part of the research and devclopment work in engineering and scicnce. Retaining a competitive edge requiresa fast path between ideas and prototypes, and in this regard mathematical modeling and simulation provide a valuable shortcut for understanding both qualitative and quantitative aspects of scientific and engineering design. To assist you in gaining this edge, COMSOL Multiphysics offers state-of-the art performance, being built from the ground up with a Java3D interface and C/C++ solvers.The Acoustics Module is an optional package that extends the COMSOL Multiphysicsmodcling cnvironment with customized user interfaces and functionality optimizcd for the analysis of acoustics. Like all modules in the COMSOL family, it provides a brary of prewritten ready-to-run models that make it quicker and casier to analyze disciplinc-specific problcms.
標(biāo)簽：
comsol
聲學(xué)模塊
上傳時(shí)間：
2022-06-19
上傳用戶：
