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)

wavE-guides

  • 單片機(jī)原理及應(yīng)用實(shí)驗(yàn)報(bào)告

    單片機(jī)原理及應(yīng)用實(shí)驗(yàn)報(bào)告:實(shí)驗(yàn)1 WAVE軟件的學(xué)習(xí)應(yīng)用*.1實(shí)驗(yàn)2下載軟件的學(xué)習(xí)應(yīng)用*.2實(shí)驗(yàn)3運(yùn)算指令的應(yīng)用編程.3實(shí)驗(yàn)4 P0口輸入、輸出實(shí)驗(yàn).4實(shí)驗(yàn)5數(shù)碼管顯示5實(shí)驗(yàn)6按鍵的識(shí)別*6實(shí)驗(yàn)7計(jì)算器設(shè)計(jì)實(shí)驗(yàn)*7實(shí)驗(yàn)8中斷實(shí)驗(yàn)8實(shí)驗(yàn)9定時(shí)器/計(jì)數(shù)器實(shí)驗(yàn)9實(shí)驗(yàn)10串行口通訊實(shí)驗(yàn).10實(shí)驗(yàn)11直流電機(jī)調(diào)速實(shí)驗(yàn)*.12實(shí)驗(yàn)12 IC卡讀寫實(shí)驗(yàn)*13實(shí)驗(yàn)13 TLC2543的應(yīng)用實(shí)驗(yàn)*14實(shí)驗(yàn)14溫度測(cè)量及控制實(shí)驗(yàn)*.15附錄A 偉福仿真器系統(tǒng)概述16附錄B STC-ISP-V3.1 界面23附錄C 實(shí)驗(yàn)板.24

    標(biāo)簽: 單片機(jī)原理 實(shí)驗(yàn)報(bào)告

    上傳時(shí)間: 2013-11-13

    上傳用戶:王小奇

  • 在偉福集成環(huán)境下使用PICC

    在偉福集成環(huán)境下使用PICC.講述在偉福集成環(huán)境如可設(shè)置PICC, 簡單的調(diào)試步驟. 更詳細(xì)的說明請(qǐng)參閱偉福仿真器使用手冊(cè).關(guān)于如何在MPLAB 下使用PICC C 語言, 請(qǐng)參閱Microchip 相應(yīng)的手冊(cè). 2-1 安裝PICC將CD-ROM 裝入光驅(qū), 自動(dòng)運(yùn)行程序?qū)⒆詣?dòng)啟動(dòng), 如果你已禁止自動(dòng)運(yùn)行功能, 可以直接運(yùn)行: cd_drive:\compiler\install.exe安裝程序?qū)⒅笇?dǎo)你完成PICC 的安裝.2-2 設(shè)置偉福集成環(huán)境在偉福集成環(huán)境中, 將編譯器路徑指向PICC 所在目錄將C命令行設(shè)置為: -16F877 –G –O –Zg -c將連接命令行設(shè)置為: -16F877 –G –O -Zg其中: -16F877 為芯片型號(hào)–G –O -c 為源程序調(diào)試設(shè)置項(xiàng), 不可修改–Zg 為打開優(yōu)化你可以在命令行中加入其它控制項(xiàng)2-3 調(diào)試C語言在WAVE\SAMPLES 目錄下有一個(gè)PIC C 語言的例子程序: PIC_C.PRJ.1. 打開PIC_C 項(xiàng)目.2. 編譯該項(xiàng)目(F9)3. 用F7,F8 單步調(diào)試?yán)映绦颍? 打開觀察窗口觀察變量

    標(biāo)簽: PICC 集成環(huán)境

    上傳時(shí)間: 2013-10-16

    上傳用戶:lili123

  • 基于DSP的新型柴油發(fā)電機(jī)勵(lì)磁控制系統(tǒng)研究

    在綜合分析諧波勵(lì)磁無刷同步發(fā)電機(jī)勵(lì)磁控制系統(tǒng)的基礎(chǔ)上,對(duì)其勵(lì)磁控制策略進(jìn)行了研究,開發(fā)了一套基于DSP( TMS320F2812) 控制的新型柴油發(fā)電機(jī)勵(lì)磁控制系統(tǒng),該系統(tǒng)采用參數(shù)自適應(yīng)模糊PID 控制勵(lì)磁,選用交流采樣方式實(shí)時(shí)檢測(cè)各信號(hào)的瞬時(shí)特性,系統(tǒng)仿真結(jié)果以及在1 臺(tái)25 kW 工頻柴油發(fā)電機(jī)上的試驗(yàn)結(jié)果證明了該控制器具有較好的電壓調(diào)節(jié)特性,系統(tǒng)穩(wěn)態(tài)和暫態(tài)性能完全滿足發(fā)電機(jī)對(duì)勵(lì)磁系統(tǒng)的要求。關(guān)鍵詞:勵(lì)磁調(diào)節(jié);模糊PID 控制;數(shù)字信號(hào)處理器;交流采樣 Abstract :According to the general analysis of the excitation cont rol system of the harmonious wave excitation brushless synchronous generator and it s characteristics ,a new type of diesel generator excitation cont rol system based on DSP( TMS320F2812) was designed. An adaptive fuzzy PID cont rol of excitation is used in this system. To detect the t ransient characteristics of the signals in a timely manner ,AC sampling was applied.The system simulation result s and the testing result s f rom a 25 kW diesel generator (50 Hz) can prove that the voltage regulation characteristics of the excitation cont rol system are very well ,and both the steadyOstate performance and the t ransient performance of the generator are also good.Key words :excitation cont rol ;fuzzy PID cont rol ;digital signal processor (DSP) ;AC sampling

    標(biāo)簽: DSP 柴油發(fā)電機(jī) 勵(lì)磁控制 系統(tǒng)研究

    上傳時(shí)間: 2013-10-29

    上傳用戶:fxf126@126.com

  • 基于CPLD的QDPSK調(diào)制解調(diào)電路設(shè)計(jì)

    為了在CDMA系統(tǒng)中更好地應(yīng)用QDPSK數(shù)字調(diào)制方式,在分析四相相對(duì)移相(QDPSK)信號(hào)調(diào)制解調(diào)原理的基礎(chǔ)上,設(shè)計(jì)了一種QDPSK調(diào)制解調(diào)電路,它包括串并轉(zhuǎn)換、差分編碼、四相載波產(chǎn)生和選相、相干解調(diào)、差分譯碼和并串轉(zhuǎn)換電路。在MAX+PLUSⅡ軟件平臺(tái)上,進(jìn)行了編譯和波形仿真。綜合后下載到復(fù)雜可編程邏輯器件EPM7128SLC84-15中,測(cè)試結(jié)果表明,調(diào)制電路能正確選相,解調(diào)電路輸出數(shù)據(jù)與QDPSK調(diào)制輸入數(shù)據(jù)完全一致,達(dá)到了預(yù)期的設(shè)計(jì)要求。 Abstract:  In order to realize the better application of digital modulation mode QDPSK in the CDMA system, a sort of QDPSK modulation-demodulation circuit was designed based on the analysis of QDPSK signal modulation-demodulation principles. It included serial/parallel conversion circuit, differential encoding circuit, four-phase carrier wave produced and phase chosen circuit, coherent demodulation circuit, difference decoding circuit and parallel/serial conversion circuit. And it was compiled and simulated on the MAX+PLUSⅡ software platform,and downloaded into the CPLD of EPM7128SLC84-15.The test result shows that the modulation circuit can exactly choose the phase,and the output data of the demodulator circuit is the same as the input data of the QDPSK modulate. The circuit achieves the prospective requirement of the design.

    標(biāo)簽: QDPSK CPLD 調(diào)制解調(diào) 電路設(shè)計(jì)

    上傳時(shí)間: 2014-01-13

    上傳用戶:qoovoop

  • Rf And Microwave Power Amplifier Design(2005)

    The main objective of this book is to present all the relevant informationrequired for RF and micro-wave power amplifier design includingwell-known and novel theoretical approaches and practical design techniquesas well as to suggest optimum design approaches effectively combininganalytical calculations and computer-aided design. This bookcan also be very useful for lecturing to promote the analytical way ofthinking with practical verification by making a bridge between theoryand practice of RF and microwave engineering. As it often happens, anew result is the well-forgotten old one. Therefore, the demonstrationof not only new results based on new technologies or circuit schematicsis given, but some sufficiently old ideas or approaches are also introduced,that could be very useful in modern practice or could contributeto appearance of new ideas or schematic techniques.

    標(biāo)簽: Amplifier Microwave Design Power

    上傳時(shí)間: 2013-12-22

    上傳用戶:vodssv

  • 基于CPLD的QDPSK調(diào)制解調(diào)電路設(shè)計(jì)

    為了在CDMA系統(tǒng)中更好地應(yīng)用QDPSK數(shù)字調(diào)制方式,在分析四相相對(duì)移相(QDPSK)信號(hào)調(diào)制解調(diào)原理的基礎(chǔ)上,設(shè)計(jì)了一種QDPSK調(diào)制解調(diào)電路,它包括串并轉(zhuǎn)換、差分編碼、四相載波產(chǎn)生和選相、相干解調(diào)、差分譯碼和并串轉(zhuǎn)換電路。在MAX+PLUSⅡ軟件平臺(tái)上,進(jìn)行了編譯和波形仿真。綜合后下載到復(fù)雜可編程邏輯器件EPM7128SLC84-15中,測(cè)試結(jié)果表明,調(diào)制電路能正確選相,解調(diào)電路輸出數(shù)據(jù)與QDPSK調(diào)制輸入數(shù)據(jù)完全一致,達(dá)到了預(yù)期的設(shè)計(jì)要求。 Abstract:  In order to realize the better application of digital modulation mode QDPSK in the CDMA system, a sort of QDPSK modulation-demodulation circuit was designed based on the analysis of QDPSK signal modulation-demodulation principles. It included serial/parallel conversion circuit, differential encoding circuit, four-phase carrier wave produced and phase chosen circuit, coherent demodulation circuit, difference decoding circuit and parallel/serial conversion circuit. And it was compiled and simulated on the MAX+PLUSⅡ software platform,and downloaded into the CPLD of EPM7128SLC84-15.The test result shows that the modulation circuit can exactly choose the phase,and the output data of the demodulator circuit is the same as the input data of the QDPSK modulate. The circuit achieves the prospective requirement of the design.

    標(biāo)簽: QDPSK CPLD 調(diào)制解調(diào) 電路設(shè)計(jì)

    上傳時(shí)間: 2013-10-28

    上傳用戶:jyycc

  • 磁芯電感器的諧波失真分析

    磁芯電感器的諧波失真分析 摘  要:簡述了改進(jìn)鐵氧體軟磁材料比損耗系數(shù)和磁滯常數(shù)ηB,從而降低總諧波失真THD的歷史過程,分析了諸多因數(shù)對(duì)諧波測(cè)量的影響,提出了磁心性能的調(diào)控方向。 關(guān)鍵詞:比損耗系數(shù), 磁滯常數(shù)ηB ,直流偏置特性DC-Bias,總諧波失真THD  Analysis on THD of the fer rite co res u se d i n i nductancShi Yan Nanjing Finemag Technology Co. Ltd., Nanjing 210033   Abstract:    Histrory of decreasing THD by improving the ratio loss coefficient and hysteresis constant of soft magnetic ferrite is briefly narrated. The effect of many factors which affect the harmonic wave testing is analysed. The way of improving the performance of ferrite cores is put forward.  Key words: ratio loss coefficient,hysteresis constant,DC-Bias,THD  近年來,變壓器生產(chǎn)廠家和軟磁鐵氧體生產(chǎn)廠家,在電感器和變壓器產(chǎn)品的總諧波失真指標(biāo)控制上,進(jìn)行了深入的探討和廣泛的合作,逐步弄清了一些似是而非的問題。從工藝技術(shù)上采取了不少有效措施,促進(jìn)了質(zhì)量問題的迅速解決。本文將就此熱門話題作一些粗淺探討。  一、 歷史回顧 總諧波失真(Total harmonic distortion) ,簡稱THD,并不是什么新的概念,早在幾十年前的載波通信技術(shù)中就已有嚴(yán)格要求<1>。1978年郵電部公布的標(biāo)準(zhǔn)YD/Z17-78“載波用鐵氧體罐形磁心”中,規(guī)定了高μQ材料制作的無中心柱配對(duì)罐形磁心詳細(xì)的測(cè)試電路和方法。如圖一電路所示,利用LC組成的150KHz低通濾波器在高電平輸入的情況下測(cè)量磁心產(chǎn)生的非線性失真。這種相對(duì)比較的實(shí)用方法,專用于無中心柱配對(duì)罐形磁心的諧波衰耗測(cè)試。 這種磁心主要用于載波電報(bào)、電話設(shè)備的遙測(cè)振蕩器和線路放大器系統(tǒng),其非線性失真有很嚴(yán)格的要求。  圖中  ZD   —— QF867 型阻容式載頻振蕩器,輸出阻抗 150Ω, Ld47 —— 47KHz 低通濾波器,阻抗 150Ω,阻帶衰耗大于61dB,       Lg88 ——并聯(lián)高低通濾波器,阻抗 150Ω,三次諧波衰耗大于61dB Ld88 ——并聯(lián)高低通濾波器,阻抗 150Ω,三次諧波衰耗大于61dB FD   —— 30~50KHz 放大器, 阻抗 150Ω, 增益不小于 43 dB,三次諧波衰耗b3(0)≥91 dB, DP  —— Qp373 選頻電平表,輸入高阻抗, L ——被測(cè)無心罐形磁心及線圈, C  ——聚苯乙烯薄膜電容器CMO-100V-707APF±0.5%,二只。 測(cè)量時(shí),所配用線圈應(yīng)用絲包銅電磁線SQJ9×0.12(JB661-75)在直徑為16.1mm的線架上繞制 120 匝, (線架為一格) , 其空心電感值為 318μH(誤差1%) 被測(cè)磁心配對(duì)安裝好后,先調(diào)節(jié)振蕩器頻率為 36.6~40KHz,  使輸出電平值為+17.4 dB, 即選頻表在 22′端子測(cè)得的主波電平 (P2)為+17.4 dB,然后在33′端子處測(cè)得輸出的三次諧波電平(P3), 則三次諧波衰耗值為:b3(+2)= P2+S+ P3 式中:S 為放大器增益dB 從以往的資料引證, 就可以發(fā)現(xiàn)諧波失真的測(cè)量是一項(xiàng)很精細(xì)的工作,其中測(cè)量系統(tǒng)的高、低通濾波器,信號(hào)源和放大器本身的三次諧波衰耗控制很嚴(yán),阻抗必須匹配,薄膜電容器的非線性也有相應(yīng)要求。濾波器的電感全由不帶任何磁介質(zhì)的大空心線圈繞成,以保證本身的“潔凈” ,不至于造成對(duì)磁心分選的誤判。 為了滿足多路通信整機(jī)的小型化和穩(wěn)定性要求, 必須生產(chǎn)低損耗高穩(wěn)定磁心。上世紀(jì) 70 年代初,1409 所和四機(jī)部、郵電部各廠,從工藝上改變了推板空氣窯燒結(jié),出窯后經(jīng)真空罐冷卻的落后方式,改用真空爐,并控制燒結(jié)、冷卻氣氛。技術(shù)上采用共沉淀法攻關(guān)試制出了μQ乘積 60 萬和 100 萬的低損耗高穩(wěn)定材料,在此基礎(chǔ)上,還實(shí)現(xiàn)了高μ7000~10000材料的突破,從而大大縮短了與國外企業(yè)的技術(shù)差異。當(dāng)時(shí)正處于通信技術(shù)由FDM(頻率劃分調(diào)制)向PCM(脈沖編碼調(diào)制) 轉(zhuǎn)換時(shí)期, 日本人明石雅夫發(fā)表了μQ乘積125 萬為 0.8×10 ,100KHz)的超優(yōu)鐵氧體材料<3>,其磁滯系數(shù)降為優(yōu)鐵

    標(biāo)簽: 磁芯 電感器 諧波失真

    上傳時(shí)間: 2013-12-15

    上傳用戶:天空說我在

  • 華碩內(nèi)部的PCB基本規(guī)范

    PCB LAYOUT 基本規(guī)範(fàn)項(xiàng)次 項(xiàng)目 備註1 一般PCB 過板方向定義:􀀹 PCB 在SMT 生產(chǎn)方向?yàn)槎踢呥^迴焊爐(Reflow), PCB 長邊為SMT 輸送帶夾持邊.􀀹 PCB 在DIP 生產(chǎn)方向?yàn)镮/O Port 朝前過波焊爐(Wave Solder), PCB 與I/O 垂直的兩邊為DIP 輸送帶夾持邊.1.1 金手指過板方向定義:􀀹 SMT: 金手指邊與SMT 輸送帶夾持邊垂直.􀀹 DIP: 金手指邊與DIP 輸送帶夾持邊一致.2 􀀹 SMD 零件文字框外緣距SMT 輸送帶夾持邊L1 需≧150 mil.􀀹 SMD 及DIP 零件文字框外緣距板邊L2 需≧100 mil.3 PCB I/O port 板邊的螺絲孔(精靈孔)PAD 至PCB 板邊, 不得有SMD 或DIP 零件(如右圖黃色區(qū)).PAD

    標(biāo)簽: PCB 華碩

    上傳時(shí)間: 2013-11-06

    上傳用戶:yyq123456789

  • 基于Multisim 10的矩形波信號(hào)發(fā)生器仿真與實(shí)現(xiàn)

    在Multisim 10軟件環(huán)境下,設(shè)計(jì)一種由運(yùn)算放大器構(gòu)成的精確可控矩形波信號(hào)發(fā)生器,結(jié)合系統(tǒng)電路原理圖重點(diǎn)闡述了各參數(shù)指標(biāo)的實(shí)現(xiàn)與測(cè)試方法。通過改變RC電路的電容充、放電路徑和時(shí)間常數(shù)實(shí)現(xiàn)了占空比和頻率的調(diào)節(jié),通過多路開關(guān)投入不同數(shù)值的電容實(shí)現(xiàn)了頻段的調(diào)節(jié),通過電壓取樣和同相放大電路實(shí)現(xiàn)了輸出電壓幅值的調(diào)節(jié)并提高了電路的帶負(fù)載能力,可作為頻率和幅值可調(diào)的方波信號(hào)發(fā)生器。Multisim 10仿真分析及應(yīng)用電路測(cè)試結(jié)果表明,電路性能指標(biāo)達(dá)到了設(shè)計(jì)要求。 Abstract:  Based on Multisim 10, this paper designed a kind of rectangular-wave signal generator which could be controlled exactly composed of operational amplifier, the key point was how to implement and test the parameter indicators based on the circuit diagram. The duty and the frequency were adjusted by changing the time constant and the way of charging and discharging of the capacitor, the width of frequency was adjusted by using different capacitors provided with multiple switch, the amplitude of output voltage was adjusted by sampling voltage and using in-phase amplifier circuit,the ability of driving loads was raised, the circuit can be used as squarewave signal generator whose frequency and amplitude can be adjusted. The final simulation results of Multisim 10 and the tests of applicable circuit show that the performance indicators of the circuit meets the design requirements.

    標(biāo)簽: Multisim 矩形波 信號(hào)發(fā)生器 仿真

    上傳時(shí)間: 2014-01-21

    上傳用戶:shen007yue

  • SPI接口AD轉(zhuǎn)換器代碼 本代碼實(shí)現(xiàn)了對(duì)串行(SPI)接口的軟件模擬 這是在一個(gè)項(xiàng)目中要用到SPI接口的器件

    SPI接口AD轉(zhuǎn)換器代碼 本代碼實(shí)現(xiàn)了對(duì)串行(SPI)接口的軟件模擬 這是在一個(gè)項(xiàng)目中要用到SPI接口的器件,調(diào)試成功,可以在WAVE下編譯通過,可以直接調(diào)用 SPI接口AD轉(zhuǎn)換器代碼 2002/3/9 design by elven

    標(biāo)簽: SPI 接口 代碼 AD轉(zhuǎn)換器

    上傳時(shí)間: 2014-12-07

    上傳用戶:xwd2010

主站蜘蛛池模板: 西丰县| 天台县| 台山市| 宁国市| 澄迈县| 化隆| 威远县| 蓬安县| 胶南市| 安图县| 锡林浩特市| 洛隆县| 天柱县| 海丰县| 乐平市| 本溪市| 清新县| 专栏| 高陵县| 苍山县| 深圳市| 扶余县| 双峰县| 太保市| 河北区| 延寿县| 突泉县| 九龙坡区| 图木舒克市| 佳木斯市| 宜城市| 揭阳市| 乐平市| 阿荣旗| 师宗县| 茶陵县| 乌兰浩特市| 连南| 商南县| 郸城县| 额尔古纳市|