亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频

蟲蟲首頁| 資源下載| 資源專輯| 精品軟件
登錄| 注冊(cè)

on-demand

  • 具故障保險(xiǎn)電壓監(jiān)視功能的按鈕ON OFF控制器

    電子設(shè)備的 ON/OFF 按鈕給繫統(tǒng)設(shè)計(jì)師帶來了一組獨(dú)特的挑戰(zhàn)

    標(biāo)簽: OFF 保險(xiǎn) 電壓監(jiān)視 按鈕

    上傳時(shí)間: 2013-10-13

    上傳用戶:18165383642

  • 多路溫度采集及監(jiān)控系統(tǒng)的設(shè)計(jì)

    介紹一種基于單片機(jī)的多路溫度采集及監(jiān)控系統(tǒng),能夠測(cè)量6路溫度信號(hào),具有計(jì)算機(jī)聯(lián)網(wǎng)功能,各測(cè)量點(diǎn)可以單獨(dú)監(jiān)控和設(shè)置,可根據(jù)用戶的需求自動(dòng)控制。測(cè)量溫度范圍為-10 ℃~200 ℃,控制方式采用模擬量調(diào)壓模式。該系統(tǒng)具有控制精度高、沖擊小等特點(diǎn)。 Abstract:  A temperature collecting and surveillance-controlling system based on sing-chip microcomputer is introduced. It can measure 6 channel signal of the temperature,and it has a function of network connection.The temperature measure points can be monitored and located, it can be controlled automatic according to user’s demand.The temperature range is -10℃ to 200℃.The model of control is adjustable voltage with simulation. It features high precision and little impact.

    標(biāo)簽: 多路 溫度采集 監(jiān)控系統(tǒng)

    上傳時(shí)間: 2013-10-23

    上傳用戶:bjgaofei

  • 基于AT89C52單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)設(shè)計(jì)

    基于AT89C52單片機(jī)的步進(jìn)電機(jī)控制系統(tǒng)設(shè)計(jì) 摘 要: 提出了一個(gè)由AT89C52單片機(jī)控制步進(jìn)電機(jī)的實(shí)例。可以通過鍵盤輸入相關(guān)數(shù)據(jù), 并根據(jù)需要, 實(shí)時(shí)對(duì)步進(jìn)電機(jī)工作方式進(jìn)行設(shè)置, 具有實(shí)時(shí)性和交互性的特點(diǎn)。該系統(tǒng)可應(yīng)用于步進(jìn)電機(jī)控制的大多數(shù)場(chǎng)合。實(shí)踐表明, 系統(tǒng)性能優(yōu)于傳統(tǒng)的步進(jìn)電機(jī)控制器。 關(guān)鍵詞: 單片機(jī); 步進(jìn)電動(dòng)機(jī); 直流固態(tài)繼電器; 實(shí)時(shí)控制 ABSTRACT: A stepp ing motor control system based on AT89C52 chip microcomputer was described.The data can be inputwith keyboard, and stepp ingmotorwas controlled by these data. According to the demand, users can set the workingmodel of stepp ingmotor in real2time. This system can be widely used in stepp ing motor controlling. The p ractice showed that the performance of this system outdid the tradi-tional stepp ing motor controller.

    標(biāo)簽: 89C C52 AT 89

    上傳時(shí)間: 2013-11-22

    上傳用戶:vodssv

  • X-tal oscillators on 8-bit mic

    <Almost since the introduction of microcontrollers as electronic components there always has been an oscillatorcircuit on the device to make it work. From application point of view only some external components wererequired to make it work. However, to make sure that it will always work required more effort. This report is basedon feedback from the market from customers applying 8-bit mircrocontrollers.>

    標(biāo)簽: oscillators X-tal bit mic

    上傳時(shí)間: 2013-11-12

    上傳用戶:穿著衣服的大衛(wèi)

  • I2C slave routines for the 87L

    The 87LPC76X Microcontroller combines in a small package thebenefits of a high-performance microcontroller with on-boardhardware supporting the Inter-Integrated Circuit (I2C) bus interface.The 87LPC76X can be programmed both as an I2C bus master, aslave, or both. An overview of the I2C bus and description of the bussupport hardware in the 87LPC76X microcontrollers appears inapplication note AN464, Using the 87LPC76X Microcontroller as anI2C Bus Master. That application note includes a programmingexample, demonstrating a bus-master code. Here we show anexample of programming the microcontroller as an I2C slave.The code listing demonstrates communications routines for the87LPC76X as a slave on the I2C bus. It compliments the program inAN464 which demonstrates the 87LPC76X as an I2C bus master.One may demonstrate two 87LPC76X devices communicating witheach other on the I2C bus, using the AN464 code in one, and theprogram presented here in the other. The examples presented hereand in AN464 allow the 87LPC76X to be either a master or a slave,but not both. Switching between master and slave roles in amultimaster environment is described in application note AN435.The software for a slave on the bus is relatively simple, as theprocessor plays a relatively passive role. It does not initiate bustransfers on its own, but responds to a master initiating thecommunications. This is true whether the slave receives or transmitsdata—transmission takes place only as a response to a busmaster’s request. The slave does not have to worry about arbitrationor about devices which do not acknowledge their address. As theslave is not supposed to take control of the bus, we do not demandit to resolve bus exceptions or “hangups”. If the bus becomesinactive the processor simply withdraws, not interfering with themaster (or masters) on the bus which should (hopefully) try toresolve the situation.

    標(biāo)簽: routines slave I2C 87L

    上傳時(shí)間: 2013-11-19

    上傳用戶:shirleyYim

  • Control System of Stepp ingMot

    提出了一個(gè)由AT89C52單片機(jī)控制步進(jìn)電機(jī)的實(shí)例。可以通過鍵盤輸入相關(guān)數(shù)據(jù), 并根據(jù)需要, 實(shí)時(shí)對(duì)步進(jìn)電機(jī)工作方式進(jìn)行設(shè)置, 具有實(shí)時(shí)性和交互性的特點(diǎn)。該系統(tǒng)可應(yīng)用于步進(jìn)電機(jī)控制的大多數(shù)場(chǎng)合。實(shí)踐表明, 系統(tǒng)性能優(yōu)于傳統(tǒng)的步進(jìn)電機(jī)控制器。關(guān)鍵詞: 單片機(jī); 步進(jìn)電動(dòng)機(jī); 直流固態(tài)繼電器; 實(shí)時(shí)控制Con trol System of Stepp ingMotor Ba sed on AT89C52 ChipM icrocomputerMENGWu2sheng, L ILiang (College of Automatization, Northwestern Polytechnical Unversity, Xipan 710072, China)ABSTRACT: A stepp ing motor control system based on AT89C52 chip microcomputer was described.The data can be inputwith keyboard, and stepp ingmotorwas controlled by these data. According to the demand, users can set the workingmodel of stepp ingmotor in real2time. This system can be widely used in stepp ing motor controlling. The p ractice showed that the performance of this system outdid the tradi tional stepp ing motor controller.KEY WORDS: Chip microcomputer; Stepp ingmotor; DCSSR; Real2time control

    標(biāo)簽: Control System ingMot Stepp

    上傳時(shí)間: 2013-11-19

    上傳用戶:leesuper

  • 基于變頻調(diào)速的水平連鑄機(jī)拉坯輥速度控制系統(tǒng)

    基于變頻調(diào)速的水平連鑄機(jī)拉坯輥速度控制系統(tǒng)Frequency Inverter Based Drawing RollerS peedC ontrolSy stem ofHorizontal Continuous Casting MachineA 偉劉沖旅巴(南 華 大 學(xué)電氣工程學(xué)院,衡陽421001)摘要拉坯輥速度控制是水平連鑄工藝的關(guān)鍵技術(shù)之一,采用變頻器實(shí)現(xiàn)水平連鑄機(jī)拉坯輥速度程序控制,由信號(hào)發(fā)生裝置給變頻器提供程控信號(hào)。現(xiàn)場(chǎng)應(yīng)用表明該控制系統(tǒng)速度響應(yīng)快,控制精度高,滿足了水平連鑄生產(chǎn)的需要。關(guān)鍵詞水平連鑄拉坯輥速度程序控制變頻器Absh'act Speedc ontorlof dr awingor leris on eo fth ek eyte chnologiesfo rho rizontalco ntinuousca stingm achine.Fo rth ispu rpose,fr equencyco nverterisad optedfo rdr awingor lersp eedp rogrammablec ontorlof ho rizontalco ntinuousca stingm achine,th ep rogrammableco ntorlsi gnalto fr equencyc onverteris provided場(chǎng)a signal generator. The results of application show that the response of system is rapid and the control accuracy is high enough to meet thedemand of production of horizontal continuous casting.Keywords Horizontalco ntinuousc asting Drawingor ler Speedp rogrammablec ontrol Ferquencyin verter 隨著 現(xiàn) 代 化工業(yè)生產(chǎn)對(duì)鋼材需求量的日益增加,連鑄生產(chǎn)能力已經(jīng)成為衡量一個(gè)國(guó)家冶金工業(yè)發(fā)展水平的重要指標(biāo)之一。近十幾年來,水平連鑄由于具有投資少、鑄坯直、見效快等多方面的優(yōu)點(diǎn),國(guó)內(nèi)許多鋼鐵企業(yè)利用水平連鑄機(jī)來澆鑄特種合金鋼,發(fā)揮了其獨(dú)特的優(yōu)勢(shì)并取得了較好的經(jīng)濟(jì)效益〔1,2)0采用 水 平 連鑄機(jī)澆鑄特種合金鋼時(shí),由于拉坯機(jī)是水平連鑄系統(tǒng)中的關(guān)鍵設(shè)備之一,拉坯機(jī)及其控制性能的好壞直接影響著連鑄坯的質(zhì)量,因此,連鑄的拉坯技術(shù)便成為整個(gè)水平連鑄技術(shù)的核心。由于鋼的冶煉過程是在高溫下進(jìn)行的,鋼水溫度的變化又容易影響鑄坯的質(zhì)量和成材率,因此,如何能在高溫環(huán)境下控制好與鑄坯速度相關(guān)的參數(shù)(拉、推程量,中停時(shí)間和拉坯頻率等)對(duì)于確保連鑄作業(yè)的進(jìn)一步高效化,延長(zhǎng)系統(tǒng)的連續(xù)作業(yè)時(shí)間十分關(guān)鍵。因此,拉坯輥速度控制技術(shù)是連鑄生產(chǎn)過程控制領(lǐng)域中的關(guān)鍵技術(shù)之- [31

    標(biāo)簽: 變頻調(diào)速 水平連鑄機(jī) 速度控制

    上傳時(shí)間: 2013-10-12

    上傳用戶:gxy670166755

  • xilinx FPGAs在工業(yè)中的應(yīng)用

      The revolution of automation on factory floors is a key driver for the seemingly insatiable demand for higher productivity, lower total cost of ownership,and high safety. As a result, industrial applications drive an insatiable demand of higher data bandwidth and higher system-level performance.   This white paper describes the trends and challenges seen by designers and how FPGAs enable solutions to meet their stringent design goals.

    標(biāo)簽: xilinx FPGAs 工業(yè) 中的應(yīng)用

    上傳時(shí)間: 2013-11-08

    上傳用戶:yan2267246

  • PQP is a library for performing three types of proximity queries on a pair of geometric models compo

    PQP is a library for performing three types of proximity queries on a pair of geometric models composed of triangles:

    標(biāo)簽: performing geometric proximity library

    上傳時(shí)間: 2014-01-13

    上傳用戶:love_stanford

  • uClinux on ARM7TDMI(ppt)

    uClinux on ARM7TDMI(ppt)

    標(biāo)簽: ARM7TDMI uClinux on

    上傳時(shí)間: 2013-12-11

    上傳用戶:shizhanincc

亚洲欧美第一页_禁久久精品乱码_粉嫩av一区二区三区免费野_久草精品视频
国产精品白丝av嫩草影院 | 国产精品视频专区| 在线精品国产欧美| 久久精品国产91精品亚洲| 欧美亚男人的天堂| 一区二区国产精品| 欧美久久久久免费| 亚洲欧洲精品一区二区精品久久久| 久久激情一区| 国产一区二区三区精品欧美日韩一区二区三区 | 午夜久久美女| 国产精品日韩| 午夜精品亚洲| 国产亚洲欧美激情| 久久国产精品久久精品国产| 国产区亚洲区欧美区| 欧美一区二区黄色| 国产亚洲精品综合一区91| 久久www成人_看片免费不卡| 国产一区二区精品久久91| 久久久久久9999| 伊人狠狠色丁香综合尤物| 久久尤物视频| 亚洲麻豆视频| 国产精品久久激情| 午夜久久久久| 狠狠网亚洲精品| 麻豆久久久9性大片| 亚洲国产三级| 欧美精品一卡二卡| 亚洲一区尤物| 国产婷婷精品| 免费成人激情视频| 99re6热只有精品免费观看| 国产农村妇女毛片精品久久莱园子| 99国产精品国产精品毛片| 欧美三日本三级少妇三2023| 亚洲香蕉网站| 国产一区二区三区四区老人| 久久―日本道色综合久久| 91久久精品视频| 欧美视频中文一区二区三区在线观看| 亚洲午夜精品网| 国产欧美一区二区三区久久人妖| 久久久久国内| 日韩亚洲不卡在线| 国产欧美一区二区三区在线老狼| 免费永久网站黄欧美| 亚洲天堂av在线免费| 国产中文一区二区| 欧美极品一区| 欧美一区二区在线| 日韩午夜剧场| 在线看无码的免费网站| 欧美性事免费在线观看| 久久国产综合精品| 99国产精品久久久久久久| 国产综合一区二区| 国产精品r级在线| 免费成人黄色片| 欧美一区精品| 在线亚洲精品| 亚洲国产一二三| 国产欧美日韩另类一区| 欧美精品七区| 久久人人爽爽爽人久久久| 一本大道久久a久久综合婷婷 | 在线播放豆国产99亚洲| 欧美日韩亚洲国产精品| 久久精品中文字幕免费mv| 一区二区三区日韩在线观看| 在线电影国产精品| 国产欧美一区二区精品婷婷 | 亚洲综合视频1区| 亚洲大片在线| 国产日韩一区欧美| 欧美色道久久88综合亚洲精品| 久久免费少妇高潮久久精品99| 亚洲午夜久久久久久久久电影网| 亚洲国产综合91精品麻豆| 黄色小说综合网站| 国产欧美日韩高清| 国产精品三上| 欧美午夜久久| 欧美啪啪一区| 欧美国产极速在线| 牛牛影视久久网| 久久精品亚洲精品国产欧美kt∨| 亚洲视频在线观看网站| 亚洲精品久久视频| 韩国精品久久久999| 国产精品视频网址| 国产精品久久久久aaaa| 欧美天天影院| 欧美午夜激情小视频| 欧美日韩精品中文字幕| 欧美大片国产精品| 欧美福利视频在线| 蜜臀a∨国产成人精品| 久久在线视频| 欧美二区不卡| 欧美日韩国产123| 欧美日韩一区二区三区高清| 欧美精品二区| 欧美三级视频在线观看| 欧美日韩专区在线| 欧美日韩国产精品专区 | 国产伦精品一区二区三区照片91| 欧美日韩国产小视频在线观看| 欧美激情精品久久久久久变态| 欧美sm视频| 欧美日韩国产一区二区| 欧美日韩一区在线视频| 欧美三级午夜理伦三级中文幕| 欧美日韩综合在线免费观看| 欧美日韩在线高清| 国产精品久久激情| 国产一区白浆| 亚洲国产天堂久久国产91| 亚洲精品男同| 一区二区黄色| 午夜精品免费视频| 久久精品论坛| 久久嫩草精品久久久精品一| 美女网站在线免费欧美精品| 欧美激情第三页| 欧美日韩国产一区精品一区| 欧美午夜久久久| 国产区二精品视| 亚洲大胆女人| 亚洲丝袜av一区| 久久精品亚洲精品| 欧美成人xxx| 国产精品美女久久| 精品999网站| 99伊人成综合| 午夜视频久久久| 久久综合中文字幕| 欧美久久电影| 国产欧美日韩免费看aⅴ视频| 伊人成综合网伊人222| 亚洲精品偷拍| 香港久久久电影| 蜜桃av一区二区三区| 欧美性事在线| 好看的亚洲午夜视频在线| 亚洲人精品午夜| 午夜精品成人在线| 免费不卡视频| 国产欧美视频一区二区| 亚洲韩国青草视频| 亚洲一区久久久| 欧美成人tv| 国产性天天综合网| 日韩小视频在线观看| 欧美一区二区网站| 欧美激情综合色| 国产丝袜美腿一区二区三区| 亚洲精品一区二区三区樱花| 欧美在线视频免费| 欧美日韩中文字幕综合视频 | 99热免费精品| 久久九九全国免费精品观看| 欧美日韩国产一区二区| 激情一区二区| 亚洲欧美春色| 欧美精品尤物在线| 精品动漫av| 羞羞视频在线观看欧美| 欧美日韩免费区域视频在线观看| 激情综合中文娱乐网| 亚洲欧美日韩视频二区| 欧美日韩a区| 亚洲成人中文| 欧美专区亚洲专区| 国产精品男gay被猛男狂揉视频| 亚洲精品欧美激情| 麻豆成人av| 精品动漫3d一区二区三区免费版 | 欧美另类一区| 极品av少妇一区二区| 亚洲欧美福利一区二区| 欧美视频一区二| 99在线精品视频在线观看| 欧美成人免费观看| 激情成人在线视频| 欧美一区二区精品| 国产精品午夜av在线| 亚洲影视中文字幕| 欧美三区视频| 在线中文字幕一区| 欧美日韩一区二区三区免费| 亚洲国产精品激情在线观看| 卡一卡二国产精品| 在线观看欧美视频| 久久久一区二区| 黄色国产精品一区二区三区| 久久久精品国产一区二区三区| 国产免费成人| 久久激情视频免费观看|