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  • 一種新的電磁閥節(jié)能驅(qū)動(dòng)電路

    隨著電磁閥在工業(yè)和日常應(yīng)用的增多,其功耗越來越被人們所重視。通過對(duì)電磁閥驅(qū)動(dòng)電路的研究,設(shè)計(jì)一套電磁閥節(jié)能驅(qū)動(dòng)電路。不僅提高了電磁閥的響應(yīng)時(shí)間,更重要的是降低了功耗,使電磁閥由工作在大電流狀態(tài)下,變成大電流啟動(dòng)小電流維持的工作狀態(tài)。減少了由電流過大引起的電磁閥線圈過熱,增加了電磁閥的安全性。The power consumption of an electromagnetic valve is drawing increasingly more attentiori as it is widely used in industrial production and daily life. In this study, an energy - saving driving circuit of electromagnetic valves was designed. It can make an electromagnetic valve to start with a high current while work with a low current; thereby the power consumption can be reduced. Besides, it can shorten the response time of an electromagnetic valve and improve the security of the valve.

    標(biāo)簽: 電磁閥 節(jié)能驅(qū)動(dòng)電路

    上傳時(shí)間: 2022-04-16

    上傳用戶:

  • 一份成熟量產(chǎn)的15KW充電模塊電路圖

    分享一份成熟量產(chǎn)的15KW充電模塊電路圖:一共500V30A、750V20A兩款機(jī)型每款機(jī)型包括PFC功率板、PFC控制板、LLC功率板、LLC控制板PFC功率板:為AC轉(zhuǎn)DC電路,PFC整流采用的是維也納I型整流;PFC控制板:控制PFC功率輸出;LLC功率板:為DC轉(zhuǎn)DC電路,DCDC變換采用的是半橋LLC三電平拓?fù)洌籐LC控制板:控制LLC功率輸出; 附件內(nèi)容:系統(tǒng)仿真如下: 

    標(biāo)簽: 充電模塊 維也納整流 LLC三電平

    上傳時(shí)間: 2022-04-22

    上傳用戶:

  • MIPI中文入門

    ContentsMIPI是什么?o D-PHY物理層特點(diǎn)?МIРI 的數(shù)據(jù)傳送oDSI&CSI應(yīng)用MIPI:手機(jī)產(chǎn)業(yè)處理界面MIPI協(xié)議是手機(jī)行業(yè)的領(lǐng)導(dǎo)者倡導(dǎo)一個(gè)開放的移動(dòng)接口標(biāo)準(zhǔn)MIPI Spec:DCS-顯示命令接口DBI-顯示總線接口DPI-顯示像素接口DSI一顯示串行接口CSI一顯示攝像接口D-PHY物理層MIPI特點(diǎn)低功耗模式·動(dòng)態(tài)調(diào)整到低功耗模式、高速傳送模式和低信號(hào)擺幅模式。高速模式每通道可以傳送500-1000Mbps低成本物理層EMI(抗輻射)數(shù)據(jù)包報(bào)頭(4 bytes)數(shù)據(jù)標(biāo)識(shí)符(DI*1byte:包含虛擬數(shù)據(jù)通道[7:6]和數(shù)據(jù)類型[5:0].,數(shù)據(jù)包*2byte:要傳送的數(shù)據(jù),長度固定兩個(gè)字節(jié)。誤差校正碼(ECC)"1byte:可以把兩個(gè)位的錯(cuò)誤糾正例程數(shù)據(jù)包報(bào)頭(4 bytes)數(shù)據(jù)標(biāo)識(shí)符(Di)*1byte:包含虛擬數(shù)據(jù)通道[7:6]和數(shù)據(jù)類型[5:0].字?jǐn)?shù)(WC)*2byte:傳送數(shù)據(jù)的長度,固定為兩個(gè)字節(jié)錯(cuò)誤校驗(yàn)碼(ECC)*1byte:可以修復(fù)兩個(gè)位的錯(cuò)誤有效傳送數(shù)據(jù)(0~65535 bytes)最大字節(jié)-2^16.數(shù)據(jù)包頁腳(2 bytes):校驗(yàn)如果數(shù)據(jù)包的有效長度為0,那么校驗(yàn)位為FFFFh如果校驗(yàn)碼不能計(jì)算,那么校驗(yàn)碼的值為0000h數(shù)據(jù)包的長度:e4+(0-65535)+2-6~ 65541 bytesSync Event(H Start,H End,v Start,V End),Data Type =xx 0001(x1h)同步事件是兩個(gè)字的數(shù)據(jù)包(1個(gè)字節(jié)的指令和一個(gè)字節(jié)的校驗(yàn),因些他們可以精確的表示同步事件的開始和結(jié)束.干單個(gè)司步開始或同步結(jié)束事件的長度和位置在前面的圖中有說明。同步事件的定義如下:Data Type= 00 0001(01h)場同步開始Data Type= 01 0001(11h)場同步結(jié)束Data Type= 10 0001(21b)行同步開始.Data Type= 11 0001(31h)行同步結(jié)束為了盡可能精確的體理一個(gè)同步事件,那么開始標(biāo)識(shí)位必須放在第一位,結(jié)束標(biāo)識(shí)位必須放在最后一位,行同步也是一樣。同步事件的開始和結(jié)束應(yīng)該是成對(duì)出現(xiàn)的,假如只有一個(gè)同步事件(通常是開始),那么這個(gè)數(shù)據(jù)也是可以傳送出去的。

    標(biāo)簽: mipi

    上傳時(shí)間: 2022-05-08

    上傳用戶:

  • stm8封裝文件

        該文件是器件官方元件封裝的文件,用cadence,打開后綴為bxl的文件。  下載的Ultra Librarian 軟件;       Ultra Librarian提供了一個(gè)基于云的庫,該庫中有超過 8 百萬種符號(hào)、封裝,以及帶有供貨商 ECAD 中性數(shù)據(jù)輸出選擇的 3D 模型。該庫以業(yè)內(nèi)最大的 ECAD 元器件庫為后盾,代表了 400 多家制造商。輕松找到您所需的零件,導(dǎo)出至 22 種不同的 CAD 工具。該庫每天更新,為您提供滿足 PCB 設(shè)計(jì)需求的最準(zhǔn)確零件。  打開 Ultra Librarian軟件,導(dǎo)入bxl后綴文件,選擇需要轉(zhuǎn)換的文件類型,最后導(dǎo)出文件。  然后就可以用cadence或者AD打開該庫。該文件生成edf和cfg文件。  再用orcad capture cis軟件打開,file>import design >edif> open(edf) configation(cfg)然后就可以生成dns工程,就會(huì)在目標(biāo)路徑下產(chǎn)生olb和obk文件,是原理圖文件,可以用orcad capture cis軟件打開。          附加導(dǎo)入Altium Designer:首先,按照所給鏈接下載ULib文件,解壓,并將解壓后的文件安裝。打開桌面上的Ultra應(yīng)用程序。打開后彈出一個(gè)對(duì)話框,選擇繼續(xù)免費(fèi)使用。然后彈出主程序窗口,在步驟一里面加載我們需要轉(zhuǎn)換的BXL文件。并且在下面選擇Altium designer,。選擇步驟三的export to selected tools ,并生成一個(gè)log.txt文件。用AD打開剛生成的UL_Import.PrjScr文件,。打開工程文件后,并將鼠標(biāo)光標(biāo)移動(dòng)到UL_Import.Pas文件下且選中。點(diǎn)擊箭頭所指運(yùn)行按鈕。在彈出的對(duì)話框UL Import下,選擇剛生成的LOG.txt文件。最后點(diǎn)擊輸出start import按鈕,即可把bxl庫文件轉(zhuǎn)換為AD封裝庫文件。生成的庫文件。

    標(biāo)簽: stm8 封裝 cad

    上傳時(shí)間: 2022-06-01

    上傳用戶:xsr1983

  • Protel2.8封裝庫,QuickPCB2005可以調(diào)用

    protel2.8封裝庫QuickPCB適用     關(guān)于QuickPcb2005:Quick Pcb 2005 程序是一款功能強(qiáng)大、操作簡單易學(xué)的PCB克隆(抄板)與鋼網(wǎng)采點(diǎn)軟件。軟件操作符合大多數(shù)設(shè)計(jì)人員的操作習(xí)慣,在很大程度上提升了抄板效率,并解除設(shè)計(jì)人員的檢測之苦。抄板的一次性合格率也能進(jìn)一步得到保證。     QuickPcb2005庫文件格式與Protel 2.8兼容,特調(diào)出Protel 2.8的庫文件,供QuickPcb2005使用.     壓縮包內(nèi)包含兩個(gè)庫文件PFW.LIB和PFWDEMOLIB,常規(guī)封裝都在里面,都可以在QuickPcb2005調(diào)出使用.

    標(biāo)簽: protel 封裝庫 quickpcb

    上傳時(shí)間: 2022-06-07

    上傳用戶:

  • 基于STM32的uCGUI移植和優(yōu)化

    相信大家有移植經(jīng)驗(yàn)的都知道,移植確實(shí)是一件非常墨跡的事情,怎么說呢,代碼都是別人的,風(fēng)格也是別人的,文件結(jié)構(gòu),定義之類都是別人的,看別人的東西是種進(jìn)步,但是,也是一個(gè)痛苦的過程,因?yàn)橛袝r(shí)候資料確實(shí)很少,而且有時(shí)候還是E文的,專業(yè)名詞一大堆,我們根本沒有辦法想象工作量是多么的巨大.不過事情都是這樣,你不懂他的時(shí)候他就像是巨山,但是一旦你理解他的時(shí)候,你才會(huì)感覺到原來他是那么的簡單(從我的經(jīng)驗(yàn)上來看,至少應(yīng)該是這樣的).好吧,閑話少說,我們就來開始我們的移植之旅把.首先,我們需要準(zhǔn)備的東西有uCGUI3.90,這個(gè)版本是大家現(xiàn)在用的比較多的,效率也比較高,別人都是這么評(píng)論的,至于其他版本的,我沒有接觸很多,所以不能過多評(píng)論.UCGUI有三個(gè)文件夾,一個(gè)是tool,這個(gè)文件夾是用來使用一些uCgui的上位機(jī)程序,基本都是字體和模板查看之類的,在sample文件夾下面是已經(jīng)別人都你寫好了很多有用的東西,像跟操作系統(tǒng)有關(guān)的GUT×或者一些模板(后面我們會(huì)用到的自己定義的Demo),或者是gui配置.后面再 詳細(xì)敘說這個(gè)文件央的功能.在Start文件夾里面,這是我們最主要的文件夾,里面就包含了uCGUI的源代碼,uCGUI的作者把源代碼放進(jìn)vc里面進(jìn)行編譯了(當(dāng)然,這是用標(biāo)準(zhǔn)C語言寫的程序,所以我們可以放在任何C語言平臺(tái)下編譯而不會(huì)擔(dān)心兼容性問題,這個(gè)uCGUI在這方面做的算是完美了),所以,我們可以在vc平臺(tái)下寫界面,然后再把代碼拷進(jìn)我們的下位機(jī)編譯器進(jìn)行編譯,這樣子效率就會(huì)非常高了.(像51那時(shí)候?qū)懡缑婢褪钳偪竦囊淮我淮蔚臒媸羌m結(jié).).

    標(biāo)簽: stm32 ucgui

    上傳時(shí)間: 2022-06-19

    上傳用戶:

  • USB-PD協(xié)議解說.

    USB Power Delivery 快速充電通信原理本篇文章講的快速充電是指USB 論壇所發(fā)布的USB Power Delivery 快速充電規(guī)范(通過VBUS 直流電平上耦合FSK 信號(hào)來請(qǐng)求充電器調(diào)整輸出電壓和電流的過程),不同于本人發(fā)布的另一篇文章所講的高通Quick Charger 2.0 規(guī)范,因?yàn)楦咄≦C2.0是利用D+ 和D- 上的不同的直流電壓來請(qǐng)求充電器動(dòng)態(tài)調(diào)整輸出電壓和電流實(shí)現(xiàn)快速充電的過程。USB PD 的通信是將協(xié)議層的消息調(diào)制成24MHZ 的FSK 信號(hào)并耦合到VBUS上或者從VBUS 上獲得FSK 信號(hào)來實(shí)現(xiàn)手機(jī)和充電器通信的過程。如圖所示, 在USB PD 通信中, 是將24MHz 的FSK 通過cAC-Coupling 耦合電容耦合到VBUS 上的直流電平上的, 而為了使24MHz 的FSK 不對(duì)Power Supply或者USB Host 的VBUS 直流電壓產(chǎn)生影響,在回路中同時(shí)添加了zIsolation 電感組成的低通濾波器過濾掉FSK 信號(hào)。

    標(biāo)簽: USB-PD協(xié)議

    上傳時(shí)間: 2022-06-21

    上傳用戶:

  • SHT30溫濕度傳感器模塊 I2C通訊 數(shù)字型 寬電壓 傳感器

    Datasheet SHT3x-DISHumidity and Temperature Sensor? Fully calibrated, linearized, and temperaturecompensated digital output? Wide supply voltage range, from 2.4 V to 5.5 V? I2C Interface with communication speeds up to 1MHz and two user selectable addresses? Typical accuracy of ? 2 %RH and ? 0.3 °C? Very fast start-up and measurement time? Tiny 8-Pin DFN package

    標(biāo)簽: sht30 溫濕度傳感器

    上傳時(shí)間: 2022-06-29

    上傳用戶:

  • 4G移動(dòng)通信技術(shù)權(quán)威指南:LTE與LTE-Advanced.4G LTE.LTE

    PrefaceDuring the past years, there has been a quickly rising interest in radio access technologies for providingmobile as well as nomadic and fixed services for voice, video, and data. The difference indesign, implementation, and use between telecom and datacom technologies is also becoming moreblurred. One example is cellular technologies from the telecom world being used for broadband dataand wireless LAN from the datacom world being used for voice-over IP.Today, the most widespread radio access technology for mobile communication is digital cellular,with the number of users passing 5 billion by 2010, which is more than half of the world’s population.It has emerged from early deployments of an expensive voice service for a few car-borne users,to today’s widespread use of mobile-communication devices that provide a range of mobile servicesand often include camera, MP3 player, and PDA functions. With this widespread use and increasinginterest in mobile communication, a continuing evolution ahead is foreseen.This book describes LTE, developed in 3GPP (Third Generation Partnership Project) and providingtrue 4G broadband mobile access, starting from the first version in release 8 and through the continuingevolution to release 10, the latest version of LTE. Release 10, also known as LTE-Advanced,is of particular interest as it is the major technology approved by the ITU as fulfilling the IMTAdvancedrequirements. The description in this book is based on LTE release 10 and thus provides acomplete description of the LTE-Advanced radio access from the bottom up.Chapter 1 gives the background to LTE and its evolution, looking also at the different standardsbodies and organizations involved in the process of defining 4G. It also gives a discussion of the reasonsand driving forces behind the evolution.Chapters 2–6 provide a deeper insight into some of the technologies that are part of LTE and itsevolution. Because of its generic nature, these chapters can be used as a background not only for LTEas described in this book, but also for readers who want to understand the technology behind othersystems, such as WCDMA/HSPA, WiMAX, and CDMA2000.Chapters 7–17 constitute the main part of the book. As a start, an introductory technical overviewof LTE is given, where the most important technology components are introduced based onthe generic technologies described in previous chapters. The following chapters provide a detaileddescription of the protocol structure, the downlink and uplink transmission schemes, and the associatedmechanisms for scheduling, retransmission and interference handling. Broadcast operation andrelaying are also described. This is followed by a discussion of the spectrum flexibility and the associated

    標(biāo)簽: 4g 移動(dòng)通信

    上傳時(shí)間: 2022-07-08

    上傳用戶:

  • 高級(jí)PID控制算法.

    Simulation can provide a lot of information about what the system is doing. We canadd the effect of different element, like Encoder resolution, ADC sampling rate, etc and understand how does it affect the system. Another benefit is the possibility to slow down the process, to gain insight on what happens of fast systems or, vice versa, speed up slow process.Because National Instruments is a unique company in the fact the we provide a fullhardware solution couple with a full development platform, we can use this tools in very particular ways For example, it is possible to combine the LabVIEW Control Design and Simulation Module along with the FPGA module to quickly prototype a controller. One of the main benefits of this approach is that there is no need to compile the FPGA code, which allows for a quick algorithm design turnaround and debugging.

    標(biāo)簽: pid控制

    上傳時(shí)間: 2022-07-20

    上傳用戶:

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