·Electric Machinery (6th ed)作者們生前最后一本書(shū)作者師傅也已故的經(jīng)典教材A. E. Fitzgerald / Charles Kingsley Jr., / Stephen D. Umans, Electric Machinery, 6th Edition McGraw-Hill | ISBN: 0073660094 | 6 edition (July 25, 2002)
標(biāo)簽： nbsp Machinery Electric ED
上傳時(shí)間： 2013-04-24
上傳用戶：zhangjinzj
all electric Machinery dynamic simulation is realized by this book
標(biāo)簽： simulation Machinery electric realized
上傳時(shí)間： 2017-03-31
上傳用戶：siguazgb
Gives all the matlab codes for dynamic simulation of electric Machinery by Chee-Mun Ong
標(biāo)簽： simulation Machinery Chee-Mun electric
上傳時(shí)間： 2017-04-19
上傳用戶：lmeeworm
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.
標(biāo)簽： Machinery Electric 6th ed
上傳時(shí)間： 2020-06-10
上傳用戶：shancjb
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial Machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
標(biāo)簽： FPGA 安全系統(tǒng)
上傳時(shí)間： 2013-11-05
上傳用戶：維子哥哥
嵌入式系統(tǒng)是一種應(yīng)用范圍非常廣泛的系統(tǒng)。可以說(shuō)除了桌面計(jì)算機(jī)和服務(wù)器外所有計(jì)算設(shè)備都屬于嵌入式系統(tǒng)，例如從便攜式音樂(lè)播放器到航天飛機(jī)上的實(shí)時(shí)系統(tǒng)控制都屬于嵌入式系統(tǒng)。 大多數(shù)商用的嵌入式系統(tǒng)都設(shè)計(jì)成專用任務(wù)的低成本的產(chǎn)品。大多數(shù)的嵌入式系統(tǒng)都具有實(shí)時(shí)性的要求。有些功能需要非常快的主頻，但其他大多數(shù)功能并不需要高速的處理能力。這些系統(tǒng)通過(guò)特定的器件和軟件來(lái)滿足實(shí)時(shí)性的要求。 簡(jiǎn)單地通過(guò)速度和成本來(lái)定義嵌入式系統(tǒng)是困難的，但對(duì)于大批量的產(chǎn)品而言，成本常常對(duì)系統(tǒng)設(shè)計(jì)起決定作用。通常，一個(gè)嵌入式系統(tǒng)的很多部分相對(duì)系統(tǒng)主要功能來(lái)說(shuō)需要較低的性能，因此嵌入式系統(tǒng)和通用PC相比，能夠使用一個(gè)滿足輔助功能的合適的CPU，從而簡(jiǎn)化了系統(tǒng)設(shè)計(jì)，降低了成本。例如，數(shù)字電視的機(jī)頂盒需要處理每秒以百萬(wàn)兆位計(jì)的連續(xù)數(shù)據(jù)，但這些數(shù)據(jù)處理大部分是由定制的硬件來(lái)實(shí)現(xiàn)的，如解析、管理和編解碼多個(gè)頻道的數(shù)字影像。 對(duì)于大批量生產(chǎn)的嵌入式系統(tǒng)，如便攜式音樂(lè)播放器或手機(jī)等，降低成本就成為最主要的問(wèn)題。這些系統(tǒng)通常只具有幾個(gè)芯片：一個(gè)高度集成的CPU，一個(gè)定制的芯片用于控制其他所有的功能，還有一個(gè)存儲(chǔ)芯片。在這種設(shè)計(jì)中，每部分都設(shè)計(jì)成使用最小的系統(tǒng)功耗。 對(duì)于小批量的嵌入式應(yīng)用，為了降低開(kāi)發(fā)成本，常常使用PC體系結(jié)構(gòu)，通過(guò)限制程序的執(zhí)行時(shí)間或用一個(gè)實(shí)時(shí)操作系統(tǒng)來(lái)替換原先的操作系統(tǒng)。在這種情況下，可以使用一個(gè)或多個(gè)高性能的CPU來(lái)替換特殊用途的硬件。 嵌入式系統(tǒng)的軟件通常運(yùn)行在有限的硬件資源上：沒(méi)有硬盤(pán)、操作系統(tǒng)、鍵盤(pán)或屏幕。軟件一般都沒(méi)有文件系統(tǒng)，如果有的話，也會(huì)采用Flash驅(qū)動(dòng)器。如果有人機(jī)交互接口的話，也是一個(gè)小鍵盤(pán)或液晶顯示器。硬件是計(jì)算機(jī)的物理部分，和存儲(chǔ)在硬件中的計(jì)算機(jī)軟件程序和數(shù)據(jù)區(qū)分開(kāi)來(lái)。 嵌入到機(jī)械中的嵌入式系統(tǒng)需要長(zhǎng)期無(wú)故障連續(xù)運(yùn)行，因此它的軟件需要比PC中的軟件更加仔細(xì)地開(kāi)發(fā)和更加嚴(yán)格地測(cè)試。 那么，到底什么是嵌入式系統(tǒng)呢？ 根據(jù)IEEE（國(guó)際電氣和電子工程師協(xié)會(huì)）的定義，嵌入式系統(tǒng)是“控制、監(jiān)視或者輔助設(shè)備、機(jī)器和車(chē)間運(yùn)行的裝置”（原文為devices used to control，monitor，or assist the operation of equipment，Machinery or plants）。這主要是從應(yīng)用上加以定義的，從中可以看出嵌入式系統(tǒng)是軟件和硬件的綜合體，還可以涵蓋機(jī)械等附屬裝置。 目前國(guó)內(nèi)一個(gè)普遍被認(rèn)同的定義是：以應(yīng)用為中心、以計(jì)算機(jī)技術(shù)為基礎(chǔ)，軟件 硬件可裁剪，適應(yīng)應(yīng)用系統(tǒng)對(duì)功能、可靠性、成本、體積、功耗嚴(yán)格要求的專用計(jì)算機(jī)系統(tǒng)。 可以這樣認(rèn)為，嵌入式系統(tǒng)是一種專用的計(jì)算機(jī)系統(tǒng)，作為裝置或設(shè)備的一部分。通常，嵌入式系統(tǒng)是一個(gè)控制程序存儲(chǔ)在ROM中的嵌入式處理器控制板。事實(shí)上，所有帶有數(shù)字接口的設(shè)備，如手表、微波爐、錄像機(jī)、汽車(chē)等，都使用嵌入式系統(tǒng)，有些嵌入式系統(tǒng)還包含操作系統(tǒng)，但大多數(shù)嵌入式系統(tǒng)都是由單個(gè)程序?qū)崿F(xiàn)整個(gè)控制邏輯。 本書(shū)是按照人事部、信息產(chǎn)業(yè)部全國(guó)計(jì)算機(jī)技術(shù)與軟件專業(yè)技術(shù)資格（水平）考試要求編寫(xiě)，內(nèi)容緊扣《嵌入式系統(tǒng)設(shè)計(jì)考試大鋼》。全書(shū)共六章，分別對(duì)嵌入式系統(tǒng)基礎(chǔ)知識(shí)、嵌入式微處理器與接口設(shè)計(jì)、嵌入式軟件與操作系統(tǒng)、嵌入式軟件程序設(shè)計(jì)、嵌入式系統(tǒng)設(shè)計(jì)與維護(hù)等知識(shí)進(jìn)行了詳細(xì)的講解。最后介紹了一個(gè)典型的嵌入式系統(tǒng)設(shè)計(jì)案例。 本書(shū)內(nèi)容豐富，結(jié)構(gòu)合理，概念清晰。既可作為全國(guó)計(jì)算機(jī)技術(shù)與軟件專業(yè)技術(shù)資格（水平）考試中嵌入式系統(tǒng)設(shè)計(jì)師級(jí)別的考試用書(shū)，供有關(guān)考生學(xué)習(xí)使用，也可作為本科生嵌入式系統(tǒng)相關(guān)課程教材或培訓(xùn)書(shū)使用。
標(biāo)簽： 嵌入式 系統(tǒng)設(shè)計(jì)師 教程
上傳時(shí)間： 2013-10-29
上傳用戶：dongqiangqiang
This white paper discusses how market trends, the need for increased productivity, and new legislation have accelerated the use of safety systems in industrial Machinery. This TÜV-qualified FPGA design methodology is changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to market. This allows FPGA users to design their own customized safety controllers and provides a significant competitive advantage over traditional microcontroller or ASIC-based designs. Introduction The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas around machines such as fast-moving robots, and distributed control systems in process automation equipment such as those used in petrochemical plants. The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was developed in the mid-1980s and has been revised several times to cover the technical advances in various industries. In addition, derivative standards have been developed for specific markets and applications that prescribe the particular requirements on functional safety systems in these industry applications. Example applications include process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC 62304), automotive (ISO 26262), power generation, distribution, and transportation. 圖Figure 1. Local Safety System
標(biāo)簽： FPGA 安全系統(tǒng)
上傳時(shí)間： 2013-11-14
上傳用戶：zoudejile
The ICA/BSS algorithms are pure mathematical formulas, powerful, but rather mechanical procedures: There is not very much left for the user to do after the Machinery has been optimally implemented. The successful and efficient use of the ICALAB strongly depends on a priori knowledge, common sense and appropriate use of the preprocessing and postprocessing tools. In other words, it is preprocessing of data and postprocessing of models where expertise is truly ne
標(biāo)簽： mathematical algorithms mechanical procedures
上傳時(shí)間： 2015-03-31
上傳用戶：silenthink
ACM/ICPC(ACM International Collegiate Programming Contest, 國(guó)際大學(xué)生程序設(shè)計(jì)競(jìng)賽)是由國(guó)際計(jì)算機(jī)界歷史悠久、頗具權(quán)威性的組織ACM（Association for Computing Machinery，美國(guó)計(jì)算機(jī)協(xié)會(huì)）主辦的，世界上公認(rèn)的規(guī)模最大、水平最高的國(guó)際大學(xué)生程序設(shè)計(jì)競(jìng)賽，其目的旨在使大學(xué)生運(yùn)用計(jì)算機(jī)來(lái)充分展示自己分析問(wèn)題和解決問(wèn)題的能力。該項(xiàng)競(jìng)賽從1970年舉辦至今已歷29屆，一直受到國(guó)際各知名大學(xué)的重視，并受到全世界各著名計(jì)算機(jī)公司的高度關(guān)注，在過(guò)去十幾年中，APPLE、AT&T、MICROSOFT和IBM等世界著名信息企業(yè)分別擔(dān)任了競(jìng)賽的贊助商。可以說(shuō)，ACM國(guó)際大學(xué)生程序設(shè)計(jì)競(jìng)賽已成為世界各國(guó)大學(xué)生最具影響力的國(guó)際級(jí)計(jì)算機(jī)類的賽事， 是廣大愛(ài)好計(jì)算機(jī)編程的大學(xué)生展示才華的舞臺(tái)，是著名大學(xué)計(jì)算機(jī)教育成果的直接體現(xiàn)，是信息企業(yè)與世界頂尖計(jì)算機(jī)人才對(duì)話的最好機(jī)會(huì)。 有很多高校都有專門(mén)的ACM訓(xùn)練網(wǎng)站，我比較喜歡光顧的是浙大的，acm.zju.edu.cn。但是很不幸，這幾天這個(gè)網(wǎng)站掛了，希望可以很快修好。 做做在線ACM，感覺(jué)還是不錯(cuò)的，打算沒(méi)有做一題，以后我會(huì)在這個(gè)ACM專欄里把每天的題目和我遞交成功的源代碼貼出來(lái)，看看自己能堅(jiān)持多就：）
標(biāo)簽： ACM International Programming Collegiate
上傳時(shí)間： 2013-12-27
上傳用戶：從此走出陰霾
Commercially available active noise control headphones rely on fixed analog controllers to drive "anti-noise" loudspeakers. Our design uses an adaptive controller to optimally cancel unwanted acoustic noise. This headphone would be particularly useful for workers who operate or work near heavy Machinery and engines because the noise is selectively eliminated. Desired sounds, such as speech and warning signals, are left to be heard clearly. The adaptive control algorithm is implemented on a Texas Instruments (TI™ ) 1 TMS320C30GEL digital signal processor (DSP), which drives a Sony CD550 headphone/microphone system. Our experiments indicate that adaptive noise control results in a dramatic improvement in performance over fixed noise control. This improvement is due to the availability of high-performance programmable DSPs and the self-optimizing and tracking capabilities of the adaptive controller in response to the surrounding noise.
標(biāo)簽： Commercially controllers headphones available
上傳時(shí)間： 2013-12-04
上傳用戶：dyctj
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