湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修誠(chéng)信為本成都鐳伙醫(yī)修平臺(tái)供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買(mǎi)產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content=" 理想的方式是在整個(gè)周期都進(jìn)行采樣，然后進(jìn)行平均，得到整個(gè)周期的平均電壓，湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修。這個(gè)方法在理論上是可行的，但實(shí)際操作時(shí)會(huì)面臨一個(gè)問(wèn)題是ADC本身的"><meta name="keywords" content="湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修,X8000"><link rel="canonical" href="http://www.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" 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id="rubao2y" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁(yè)?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_yyby/">醫(yī)藥健康</a>?<a href="http://www.cdcfah.com/cp/second-yyby_ylsb/">醫(yī)療設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-ylsb_qtflpd/">其它未分類(lèi)</a>?湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修誠(chéng)信為本成都鐳伙醫(yī)修平臺(tái)供應(yīng)</p><div id="eqhtfd4" class="leftbox clearfix"><h1>湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修誠(chéng)信為本成都鐳伙醫(yī)修平臺(tái)供應(yīng)</h1><div id="sg3ieba" class="proBig"><div id="clxoa8w" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637330123387548828/4928103.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="azgs8dv" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637330123387548828/4928103.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="3hs7vp4" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修,X8000</p><p><span>***更新：</span>2021-02-04 11:11:49</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="octvho9" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都鐳伙科技有限公司</a></p><p><span>聯(lián)系人：</span>邱鋒</p><p><span>郵箱: </span>cdleihuokeji@163.com</p><p><span>電話: </span>13982269628</p><p><span>傳真: </span>028_</p><p><span>網(wǎng)址: </span></p><p><span>手機(jī): </span>028-8444323</p><p><span>地址: </span>新都區(qū)踏水路創(chuàng)想大廈2單元2606</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="ruqrsji" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="jhs22s3" class="box"><p><p> 理想的方式是在整個(gè)周期都進(jìn)行采樣，然后進(jìn)行平均，得到整個(gè)周期的平均電壓，湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修。這個(gè)方法在理論上是可行的，但實(shí)際操作時(shí)會(huì)面臨一個(gè)問(wèn)題是ADC本身的量化誤差可能會(huì)超過(guò)單個(gè)周期內(nèi)輸出電壓的波動(dòng)，使得這種方法毫無(wú)意義?！鲎鳛橐环N折中，需要根據(jù)轉(zhuǎn)換器的拓?fù)?，研究轉(zhuǎn)換器在何時(shí)的輸出電壓接近其周期平均電壓。忽略輸出電壓?jiǎn)沃芷诩y波■如果忽略輸出電壓?jiǎn)沃芷诩y波，那么采樣時(shí)刻的選取就變簡(jiǎn)單了，一個(gè)合適的采樣時(shí)刻是采樣后，完成后續(xù)的所有工作，恰好更新下一周期占空比按照這種方式，環(huán)路延遲將減少到Ts，而不是2Ts。離散化方法的選擇■由前面的分析可知，整個(gè)環(huán)路的延遲等于，2Ts的延遲，加上模塊傳遞函數(shù)自帶的相位改變，湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修。比如傳遞函數(shù)分母出現(xiàn)s或1-z-1，意味著相位要推遲?！龅枪饪紤]這些還不夠，湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修，還要注意到，在將連續(xù)傳遞函數(shù)進(jìn)行離散化的時(shí)候，離散化這個(gè)過(guò)程可能會(huì)引入延遲。如果選擇加零階保持器法，那么會(huì)引入半個(gè)周期的延遲；如果選擇雙線性變換法，那么不會(huì)引入延遲，因此，在充分考慮了環(huán)路延遲后，應(yīng)該選擇這種離散化方法，以免得到的離散傳遞函數(shù)不能表達(dá)真實(shí)的情況。而進(jìn)入九十年代，大量的設(shè)備逐漸老化，故障頻繁，國(guó)際、國(guó)內(nèi)的醫(yī)療設(shè)備市場(chǎng)也發(fā)生了巨大的變化。湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修,X8000" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637330123387548828/4928103.png"></div><p> 在二極管反向恢復(fù)期間，等效電感和等效電容成為一個(gè)RC振蕩器，產(chǎn)生高頻振蕩。為了控制這種高頻振蕩，需在二極管兩端并聯(lián)電容C或RC緩沖網(wǎng)絡(luò)。電阻一般取10Ω-100Ω，電容取。在二極管上并聯(lián)的電容C或者RC，其取值要經(jīng)過(guò)反復(fù)試驗(yàn)才能確定。如果選用不當(dāng)，反而會(huì)造成更嚴(yán)重的振蕩。對(duì)高頻噪聲要求嚴(yán)格的話，可以采用軟開(kāi)關(guān)技術(shù)。關(guān)于軟開(kāi)關(guān)，有很多書(shū)專(zhuān)門(mén)介紹。5，二極管后接電感（EMI濾波）這也是常用的控制高頻噪聲的方法。針對(duì)產(chǎn)生噪聲的頻率，選擇合適的電感元件，同樣能夠有效地控制噪聲。需要注意的是，電感的額定電流要滿足實(shí)際的要求。比較簡(jiǎn)單的做法，不再詳細(xì)解釋。小結(jié)以上是關(guān)于開(kāi)關(guān)電源紋波，總結(jié)的一些內(nèi)容，如果能加些波形就更好了。雖然可能不太全，但對(duì)一般的應(yīng)用已經(jīng)足夠了。關(guān)于噪聲控制，實(shí)際中并不一定全部應(yīng)用，重要的是根據(jù)自己的設(shè)計(jì)要求，比如產(chǎn)品體積，成本，開(kāi)發(fā)周期等，選擇合適的方法。開(kāi)關(guān)電源視頻教程49集，后3天倒數(shù)！為了給想學(xué)習(xí)電源技術(shù)而找不到途徑的新人和想更進(jìn)一步鞏固電源技術(shù)的在職電源工程師一個(gè)學(xué)習(xí)平臺(tái)，此次**質(zhì)量電源工程師張飛應(yīng)邀請(qǐng)，花了整整6個(gè)月的時(shí)間做了一個(gè)反激開(kāi)關(guān)電源實(shí)際項(xiàng)目。湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修而且隨著高科技的發(fā)展，眾多的醫(yī)療設(shè)備進(jìn)入到我們的家庭。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修,X8000" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637330122852324218/9541329.png"></div><p> 不再是穩(wěn)壓二極管特性，如圖5，超級(jí)電容器正常工作時(shí)不應(yīng)進(jìn)入這種狀態(tài)。圖4電路元件參數(shù)如表1。一般大容量超級(jí)電容器的均壓幾乎全采用這種方式[1]，國(guó)外產(chǎn)品通常按表1的數(shù)據(jù)的參數(shù)，出現(xiàn)電阻性特性的電流（轉(zhuǎn)折電流）在800mA左右，而將R9改為Ω/3W，則轉(zhuǎn)折電流可以提高到～，事實(shí)上Q1的驅(qū)動(dòng)能力遠(yuǎn)不止*驅(qū)動(dòng)一個(gè)Q2，可以驅(qū)動(dòng)多組R8、Q2、R9這樣的單元電路。作者將圖4加以改進(jìn)如圖5。圖中的Q2、Q3、Q4、Q5可以選擇價(jià)格低廉的S8050（40V/2A）。通過(guò)采用多輸出級(jí)的方式增加轉(zhuǎn)折電流值，在所有參數(shù)與表1中的參數(shù)完全性同時(shí)，可以做到接近4A，如圖6，采用上述改進(jìn)措施后，均壓效果優(yōu)于國(guó)外產(chǎn)品。圖6超級(jí)電容器大電流均壓電路的伏安特性均壓的效果本文對(duì)項(xiàng)目完成的680F/。在未接入電壓均衡電路前，超級(jí)電容器單體電壓高，低，其中高電壓已超過(guò)額定電壓；接入本文圖4所示的電壓均衡電路后，重新測(cè)試，各超級(jí)電容器單體電壓均為。從實(shí)驗(yàn)結(jié)果可以得出本文提出的超級(jí)電容器電壓均衡電路是在超級(jí)電容器串聯(lián)使用時(shí)均衡超級(jí)電容器單體電壓的有效方法。代用本文圖5所示電路電路可以得到更好的均壓效果。</p><p> 給補(bǔ)償網(wǎng)絡(luò)增加一個(gè)零點(diǎn)fZ，開(kāi)環(huán)傳遞函數(shù)就會(huì)產(chǎn)生足夠的超前相移，保證系統(tǒng)有足夠的裕量；在大于零點(diǎn)頻率的附近增加一個(gè)極點(diǎn)fP，并且為了克服穩(wěn)態(tài)誤差大的缺點(diǎn)，可以加入倒置零點(diǎn)fL，為此可以采用如圖4所示的PID補(bǔ)償網(wǎng)絡(luò)。根據(jù)電路寫(xiě)出的PID補(bǔ)償網(wǎng)絡(luò)的傳遞函數(shù)為：在此我們通過(guò)使用Matlab中SISOTOOL工具來(lái)設(shè)計(jì)調(diào)節(jié)器參數(shù),可得：首先確定PD調(diào)節(jié)器的參數(shù)，按設(shè)計(jì)要求拖動(dòng)添加零點(diǎn)與極點(diǎn)，所得參數(shù)如圖5加入PD補(bǔ)償器之后的開(kāi)環(huán)Bode圖，相頻裕度為52度,穿越頻率5KHz,如圖6所示：然后加入倒置零點(diǎn)，設(shè)計(jì)PID參數(shù)，如圖7所示加入PID之后，低頻段的增益抬高，穩(wěn)態(tài)誤差減小，如圖8假設(shè)補(bǔ)償網(wǎng)絡(luò)中C1=1μF，依據(jù)前面的方法計(jì)算后，選用R1=94，R2=393，R3=12，C2=。由圖8可以看出，補(bǔ)償后，fc=5KHz，相位裕度ψm=52，高頻段f>fp，補(bǔ)償后的系統(tǒng)回路增益在fc處提升至0dB，且以-40dB/dec的斜率下降，能夠有效地控制高頻干擾。系統(tǒng)仿真圖9為PID補(bǔ)償?shù)腂uck變化器系統(tǒng)Psim仿真圖圖9PID補(bǔ)償?shù)腂uck變化器系統(tǒng)Psim仿真圖變換器仿真結(jié)果如圖10所示驗(yàn)證加入擾動(dòng)影響如圖11，系統(tǒng)在，即并聯(lián)一個(gè)約30歐姆的電阻；在。仿真結(jié)果：如果系統(tǒng)在突加10%負(fù)載電流擾動(dòng)時(shí)，輸出電壓約有。各種醫(yī)療儀器設(shè)備責(zé)任到人，相對(duì)固定專(zhuān)人操作，并與其簽訂儀器設(shè)備認(rèn)養(yǎng)合同。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修,X8000" src="https://tyunfile.71360.com/WaterMark/UploadFile/leihuo/637330123689550781/4857864.png"></div><p> PCB布線與紋波關(guān)系布局：脈沖電壓連線盡可能短，其中輸入開(kāi)關(guān)管到變壓器連線，輸出變壓器到整流管連接線。脈沖電流環(huán)路盡可能小如輸入濾波電容正到變壓器到開(kāi)關(guān)管返回電容負(fù)。輸出部分變壓器出端到整流管到輸出電感到輸出電容返回變壓器電路中X電容要盡量接近開(kāi)關(guān)電源輸入端，輸入線應(yīng)避免與其他電路平行，應(yīng)避開(kāi)。Y電容應(yīng)放置在機(jī)殼接地端子或FG連接端。共摸電感應(yīng)與變壓器保持一定距離，以避免磁偶合。如不好處理可在共摸電感與變壓器間加一屏蔽，以上幾項(xiàng)對(duì)開(kāi)關(guān)電源的EMC性能影響較大。輸出電容一般可采用兩只一只靠近整流管另一只應(yīng)靠近輸出端子，可影響電源輸出紋波指標(biāo)，兩只小容量電容并聯(lián)效果應(yīng)優(yōu)于用一只大容量電容。發(fā)熱器件要和電解電容保持一定距離，以延長(zhǎng)整機(jī)壽命，電解電容是開(kāi)關(guān)電源壽命的瓶勁，如變壓器、功率管、大功率電阻要和電解保持距離，電解之間也須留出散熱空間，條件允許可將其放置在進(jìn)風(fēng)口?？偟闹v這三種手段都是增大pcb的電流承載能力，我覺(jué)得走線首先位的是縮短長(zhǎng)度，這樣是減小板上寄生電感的有效辦法。如果長(zhǎng)度定了在綜合考慮的話，搪錫是可取的：搪錫對(duì)于設(shè)計(jì)者容易實(shí)現(xiàn)，只要在阻焊層上開(kāi)窗就行了。對(duì)熱穩(wěn)定性差導(dǎo)致參數(shù)改變的故障或間歇性故障。湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修</p><p style="text-indent:25px">大型跨國(guó)公司，專(zhuān)業(yè)公司，逐步在全國(guó)各地設(shè)置分支機(jī)構(gòu)。湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修</p><p style="text-indent:25px">儀器儀表行業(yè)本身是一個(gè)加入，產(chǎn)出周期較長(zhǎng)的行業(yè)，所以作為業(yè)內(nèi)廠家，一方面要尋找中、短期市場(chǎng)熱點(diǎn)，另一方面也要在產(chǎn)品、技術(shù)研發(fā)方面有長(zhǎng)遠(yuǎn)的規(guī)劃;隨著互聯(lián)網(wǎng)的逐步發(fā)展，為內(nèi)窺鏡以及維修周邊，動(dòng)力系統(tǒng)及手柄附件維修，攝像系統(tǒng)主機(jī)及攝像頭維修，手術(shù)器械類(lèi)維修等產(chǎn)品的傳播提供了一個(gè)飛速的平臺(tái)。讓儀器儀表行業(yè)從傳統(tǒng)的銷(xiāo)售模式到以互聯(lián)網(wǎng)電子商務(wù)為主的營(yíng)銷(xiāo)方式的轉(zhuǎn)變，促進(jìn)了儀器儀表行業(yè)與互聯(lián)網(wǎng)的結(jié)合，推動(dòng)產(chǎn)業(yè)創(chuàng)新發(fā)展。目前我國(guó)電子技術(shù)研究開(kāi)發(fā)及轉(zhuǎn)讓、電氣設(shè)備、醫(yī)療設(shè)備維護(hù)服務(wù)、機(jī)械設(shè)備的設(shè)計(jì)、銷(xiāo)售；電器用品、醫(yī)療器械；貨物及技術(shù)進(jìn)出口。專(zhuān)業(yè)維修直管硬鏡、攝像系統(tǒng)、冷光源、氣腹機(jī)、動(dòng)力系統(tǒng)、灌注泵、動(dòng)力系統(tǒng)手柄、超聲刀手柄。軟質(zhì)器械激光焊接。產(chǎn)品，主要集中在中低檔市場(chǎng)，而市場(chǎng)則主要被國(guó)外品牌所占據(jù)。在某些領(lǐng)域，國(guó)產(chǎn)產(chǎn)品甚至是空白，這就需要未來(lái)我國(guó)儀器儀表向市場(chǎng)進(jìn)軍，擴(kuò)大產(chǎn)品占比。從銷(xiāo)售廣義角度來(lái)說(shuō)，儀器儀表也可具有自動(dòng)操控、報(bào)警、信號(hào)傳遞和數(shù)據(jù)處理等功能，例如用于工業(yè)生產(chǎn)過(guò)程自動(dòng)操控中的氣動(dòng)調(diào)節(jié)儀表，和電動(dòng)調(diào)節(jié)儀表，以及集散型儀表操控系統(tǒng)也皆屬于儀器儀表。湛江史賽克STRYKERX8000光源主機(jī)芯片級(jí)維修</p><p style="text-indent:25px">成都鐳伙科技有限公司主要經(jīng)營(yíng)范圍是儀器儀表，擁有一支專(zhuān)業(yè)技術(shù)團(tuán)隊(duì)和良好的市場(chǎng)口碑。公司業(yè)務(wù)涵蓋內(nèi)窺鏡以及維修周邊，動(dòng)力系統(tǒng)及手柄附件維修，攝像系統(tǒng)主機(jī)及攝像頭維修，手術(shù)器械類(lèi)維修等，價(jià)格合理，品質(zhì)有保證。公司從事儀器儀表多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專(zhuān)業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。成都鐳伙科技秉承“客戶為尊、服務(wù)為榮、創(chuàng)意為先、技術(shù)為實(shí)”的經(jīng)營(yíng)理念，全力打造公司的重點(diǎn)競(jìng)爭(zhēng)力。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/3159881.html</p></div></div></div></div></div><div id="7amjb8h" class="page-right twoColRt"><div id="rqryzlu" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="pyugsj9" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 信息推薦自業(yè)物資供應(yīng)" class="vcenter" 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