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The large-scale deployment of the smart grid (SG) paradigm could play a strategic role in
supporting the evolution of conventional electrical grids toward active, flexible and self-
healing web energy networks composed of distributed and cooperative energy resources.
From a conceptual point of view, the SG is the convergence of information and
operational technologies applied to the electric grid, providing sustainable options to
customers and improved security. Advances in research on SGs could increase the
efficiency of modern electrical power systems by: (i) supporting the massive penetration
of small-scale distributed and dispersed generators; (ii) facilitating the integration of
pervasive synchronized metering systems; (iii) improving the interaction and cooperation
between the network components; and (iv) allowing the wider deployment of self-healing
and proactive control/protection paradigms.
標(biāo)簽：
Computational
Intelligence
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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We’re living through exciting times. The landscape of what computers can do is
changing by the week. Tasks that only a few years ago were thought to require
higher cognition are getting solved by machines at near-superhuman levels of per-
formance. Tasks such as describing a photographic image with a sentence in idiom-
atic English, playing complex strategy game, and diagnosing a tumor from a
radiological scan are all approachable now by a computer. Even more impressively,
computers acquire the ability to solve such tasks through examples, rather than
human-encoded of handcrafted rules.
標(biāo)簽：
Deep-Learning-with-PyTorch
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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Artificial Intelligence (AI) has undoubtedly been one of the most important buz-
zwords over the past years. The goal in AI is to design algorithms that transform com-
puters into “intelligent” agents. By intelligence here we do not necessarily mean an
extraordinary level of smartness shown by superhuman; it rather often involves very
basic problems that humans solve very frequently in their day-to-day life. This can
be as simple as recognizing faces in an image, driving a car, playing a board game, or
reading (and understanding) an article in a newspaper. The intelligent behaviour ex-
hibited by humans when “reading” is one of the main goals for a subfield of AI called
Natural Language Processing (NLP). Natural language 1 is one of the most complex
tools used by humans for a wide range of reasons, for instance to communicate with
others, to express thoughts, feelings and ideas, to ask questions, or to give instruc-
tions. Therefore, it is crucial for computers to possess the ability to use the same tool
in order to effectively interact with humans.
標(biāo)簽：
Embeddings
Processing
Language
Natural
in
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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Computer science as an academic discipline began in the 1960’s. Emphasis was on
programming languages, compilers, operating systems, and the mathematical theory that
supported these areas. Courses in theoretical computer science covered finite automata,
regular expressions, context-free languages, and computability. In the 1970’s, the study
of algorithms was added as an important component of theory. The emphasis was on
making computers useful. Today, a fundamental change is taking place and the focus is
more on a wealth of applications. There are many reasons for this change. The merging
of computing and communications has played an important role. The enhanced ability
to observe, collect, and store data in the natural sciences, in commerce, and in other
fields calls for a change in our understanding of data and how to handle it in the modern
setting. The emergence of the web and social networks as central aspects of daily life
presents both opportunities and challenges for theory.
標(biāo)簽：
Foundations
Science
Data
of
上傳時(shí)間：
2020-06-10
上傳用戶：shancjb
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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：
-
為適應(yīng)雙向DC/DC功率變換的電流采樣需求,一種高精度高邊電流采樣電路被提出。其基本思想是在功率電路的高邊串入采樣電阻,借助電流鏡原理并引入偏置電流電路,將雙向電流均轉(zhuǎn)換為正向電壓輸出。通過(guò)理論分析與仿真結(jié)合的方法對(duì)電流鏡采樣原理及4種不同的偏置電流電路方案進(jìn)行對(duì)比,最后通過(guò)實(shí)驗(yàn)數(shù)據(jù)驗(yàn)證了高精度高邊電流采樣電路的有效性。實(shí)驗(yàn)數(shù)據(jù)表明,該采樣電路可在-25~75℃的溫度工作范圍內(nèi),針對(duì)-10~＋10 A范圍內(nèi)的電流采樣實(shí)現(xiàn)優(yōu)于5%的采樣精度。Current sensing plays an important role in controlling,monitoring or protection functions of power systems.To meet the current sensing requirement of bidirectional DC/DC converters,a high-accuracy bidirectional current sensing circuit is proposed.The proposed current sensing circuit inserts a resistor in the path of the current to be sensed,while the current mirror and biased current circuit are introduced.Therefore,the bidirectional current can be expressed by positive voltage.By theoretical analysis and simulation,the sampling theory is analyzed and four biased current circuits are compared.At last,experimental results verified the proposed method.It is demonstrated that the proposed current sensing circuit can achi...
標(biāo)簽：
雙向DC電源
電流采樣
上傳時(shí)間：
2022-04-22
上傳用戶：
-
超聲波換能器作為一種實(shí)用的檢測(cè)手段，能實(shí)現(xiàn)聲波所攜帶的信息和電能之間轉(zhuǎn)換。它的性能優(yōu)良，價(jià)格低廉，操作方便，易于調(diào)試，因此在工農(nóng)業(yè)生產(chǎn)中發(fā)揮著重要的作用。但目前換能器驅(qū)動(dòng)電路的發(fā)射頻率多為40 kHz，本文針對(duì)1 MHz的超聲波換能器電路進(jìn)行了設(shè)計(jì)，主要介紹了它的發(fā)射驅(qū)動(dòng)電路和接收驅(qū)動(dòng)電路的設(shè)計(jì)方案，并對(duì)它們的功能進(jìn)行了詳細(xì)地說(shuō)明。最后搭建實(shí)驗(yàn)平臺(tái)，并對(duì)電路的輸入、輸出模塊進(jìn)行了測(cè)試。實(shí)驗(yàn)結(jié)果表明，換能器電路運(yùn)行良好，可以為超聲波高精度測(cè)量領(lǐng)域的應(yīng)用提供參考。As a practical means of detection, ultrasonic transducer can realize the conversion between theinformation carried by sound wave and electric energy.It has the advantages of excellent performance,low cost, convenient operation and debugging, so plays an important role in industrial and agriculturalproduction.However, the transmitting frequency of the driving circuit for most transducer is 40 kHz.Thecircuit of 1 MHz ultrasonic transducer is designed In this paper. It mainly introduces the emissive drivingcircuit and the receiving circuit design and the detailed function of them. Finally, the experimentalplatform is built, and the circuit of input and output were tested. Experiments show that the transducer＇ s...
標(biāo)簽：
換能器
驅(qū)動(dòng)電路
上傳時(shí)間：
2022-04-28
上傳用戶：
