邏輯元件換向功能德國博士力士樂boschrexroth

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邏輯元件換向功能德國博士力士樂boschrexroth

邏(luo)(luo)輯元件的邏(luo)(luo)輯元件具有不(bu)同(tong)的設計特(te)點。這些(xie)特(te)點隨著CMOS、TTL和ECL的不(bu)同(tong)而變化。這些(xie)特(te)點包括輸入電源能耗、速(su)度／能量關(guan)系、封裝形式、邊沿變化率和電壓(ya)漂移(yi)值(zhi)。有些(xie)邏(luo)(luo)輯元件具有控制(zhi)內部邏(luo)(luo)輯門的內部邊沿

變(bian)化的時鐘偏移電路，以(yi)便(bian)保持精確的傳輸延遲(chi)。

降低EMI并(bing)提高信號(hao)質量的(de)一個可行辦法是盡可能選擇zui慢(man)速度的(de)邏輯元(yuan)件，同時(shi)保持適當的(de)時(shi)序容(rong)限(xian)，盡量使(shi)用上(shang)升時(shi)間(jian)卉大于(yu)5 ns的(de)元(yuan)件。在一般(ban)情況(kuang)下，不要(yao)使(shi)用比電路(lu)實際需要(yao)或(huo)時(shi)序要(yao)求速度更(geng)快的(de)元(yuan)件。

大多數(shu)工程師選擇邏輯元件(jian)時重點(dian)考慮的(de)是其功能、運行速(su)度和內部邏輯門的(de)傳輸延(yan)遲(chi)，很少把精力放在考慮邏輯元件(jian)的(de)電(dian)磁效(xiao)應(ying)上。但實際(ji)情況(kuang)是，當元件(jian)的(de)運行速(su)度加快(kuai)時，伴隨著內部傳輸延(yan)遲(chi)下降，射頻電(dian)流(liu)會(hui)增大，導致串擾和振鈴(ling)現(xian)象的(de)發生。

博士力士樂boschrexroth邏輯元件換向功能氣動邏輯元件

以(yi)壓(ya)(ya)(ya)(ya)(ya)(ya)高壓(ya)(ya)(ya)(ya)(ya)(ya)截止(zhi)(zhi)式(shi)氣(qi)動(dong)(dong)(dong)邏(luo)(luo)輯元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)縮氣(qi)體(ti)為(wei)(wei)(wei)工作(zuo)(zuo)介質，用內部可(ke)動(dong)(dong)(dong)件(jian)(jian)(jian)(jian)(jian)(jian)的(de)(de)動(dong)(dong)(dong)作(zuo)(zuo)改變氣(qi)流的(de)(de)流動(dong)(dong)(dong)方向(xiang)，從而在(zai)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)(dong)中(zhong)實現邏(luo)(luo)輯和(he)放(fang)大(da)等(deng)(deng)功(gong)能的(de)(de)控制元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)。氣(qi)動(dong)(dong)(dong)邏(luo)(luo)輯元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)有高壓(ya)(ya)(ya)(ya)(ya)(ya)截止(zhi)(zhi)式(shi)、滑閥(fa)式(shi)和(he)高壓(ya)(ya)(ya)(ya)(ya)(ya)膜(mo)(mo)(mo)片式(shi)等(deng)(deng)。為(wei)(wei)(wei)高壓(ya)(ya)(ya)(ya)(ya)(ya)截止(zhi)(zhi)式(shi)氣(qi)動(dong)(dong)(dong)邏(luo)(luo)輯元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)。它(ta)的(de)(de)基(ji)本部分由(you)膜(mo)(mo)(mo)片推動(dong)(dong)(dong)的(de)(de)閥(fa)芯(xin)和(he)閥(fa)座組成。當(dang)P口(kou)(kou)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號為(wei)(wei)(wei)零時，彈(dan)簧使閥(fa)芯(xin)壓(ya)(ya)(ya)(ya)(ya)(ya)向(xiang)上閥(fa)座，壓(ya)(ya)(ya)(ya)(ya)(ya)縮氣(qi)體(ti)由(you) PS口(kou)(kou)流向(xiang)PB口(kou)(kou)；當(dang)P口(kou)(kou)出現氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號時，將膜(mo)(mo)(mo)片連(lian)同(tong)閥(fa)芯(xin)壓(ya)(ya)(ya)(ya)(ya)(ya)向(xiang)下閥(fa)座,堵死PS口(kou)(kou)與PB口(kou)(kou)的(de)(de)通道，并使 PB口(kou)(kou)放(fang)空，壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)為(wei)(wei)(wei)零。這樣，PB口(kou)(kou)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)的(de)(de)有無，與P口(kou)(kou)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號的(de)(de)存(cun)(cun)在(zai)具有“非門”的(de)(de)邏(luo)(luo)輯關系(xi)（當(dang)P口(kou)(kou)的(de)(de)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號存(cun)(cun)在(zai),PB 口(kou)(kou)的(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力(li)就不存(cun)(cun)在(zai),即(ji)為(wei)(wei)(wei)“非”）。適(shi)當(dang)改變結構和(he)對元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)作(zuo)(zuo)不同(tong)組合，即(ji)可(ke)得(de)到其他的(de)(de)邏(luo)(luo)輯關系(xi)。P口(kou)(kou)的(de)(de)信(xin)號氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)遠小(xiao)于被(bei)控制的(de)(de)PB口(kou)(kou)氣(qi)壓(ya)(ya)(ya)(ya)(ya)(ya)，所以(yi)元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)同(tong)時能起放(fang)大(da)作(zuo)(zuo)用。氣(qi)動(dong)(dong)(dong)邏(luo)(luo)輯元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)可(ke)用在(zai)易(yi)燃、易(yi)爆(bao)、強磁、輻射、潮濕(shi)和(he)粉塵等(deng)(deng)惡劣工作(zuo)(zuo)環境中(zhong)。元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)結構簡單(dan)，對氣(qi)源凈化和(he)穩壓(ya)(ya)(ya)(ya)(ya)(ya)要求(qiu)不高，但響(xiang)應(ying)速度(du)較慢，不宜組成復(fu)雜的(de)(de)控制系(xi)統。由(you)于元(yuan)件(jian)(jian)(jian)(jian)(jian)(jian)內有可(ke)動(dong)(dong)(dong)件(jian)(jian)(jian)(jian)(jian)(jian)，在(zai)強烈沖擊和(he)振動(dong)(dong)(dong)工作(zuo)(zuo)環境中(zhong)，有產生(sheng)誤動(dong)(dong)(dong)作(zuo)(zuo)的(de)(de)可(ke)能。

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邏(luo)輯元(yuan)件(jian)(jian)的邏(luo)輯元(yuan)件(jian)(jian)具(ju)有不(bu)同的設計(ji)特(te)(te)點(dian)。這些(xie)特(te)(te)點(dian)隨著CMOS、TTL和(he)ECL的不(bu)同而變(bian)化。這些(xie)特(te)(te)點(dian)包括輸入電(dian)(dian)源能(neng)耗(hao)、速(su)度／能(neng)量關系(xi)、封裝形式(shi)、邊(bian)沿(yan)變(bian)化率(lv)和(he)電(dian)(dian)壓漂(piao)移值(zhi)。有些(xie)邏(luo)輯元(yuan)件(jian)(jian)具(ju)有控制內部邏(luo)輯門(men)的內部邊(bian)沿(yan)

變(bian)化的時(shi)鐘偏移電(dian)路(lu)，以便(bian)保持精確的傳輸延(yan)遲(chi)。

降低EMI并提高信(xin)號質量(liang)的一個可行辦(ban)法是盡可能選(xuan)擇zui慢(man)速度(du)(du)的邏輯元件，同時(shi)保持適(shi)當的時(shi)序容限，盡量(liang)使(shi)用(yong)上升時(shi)間卉大(da)于(yu)5 ns的元件。在(zai)一般情況下，不要使(shi)用(yong)比電路實際需要或時(shi)序要求速度(du)(du)更(geng)快的元件。

大(da)多(duo)數工程(cheng)師選擇邏輯元件時(shi)重(zhong)點考(kao)慮(lv)的(de)(de)是其功能、運(yun)(yun)行速度(du)(du)和(he)內部邏輯門的(de)(de)傳輸(shu)延遲，很少把(ba)精力放在考(kao)慮(lv)邏輯元件的(de)(de)電(dian)(dian)磁(ci)效應上。但實際情況是，當(dang)元件的(de)(de)運(yun)(yun)行速度(du)(du)加快時(shi)，伴(ban)隨著內部傳輸(shu)延遲下(xia)降，射(she)頻電(dian)(dian)流會增大(da)，導致串擾和(he)振鈴現(xian)象的(de)(de)發生。

博士力士樂boschrexroth邏輯元件換向功能氣動邏輯元件

以壓(ya)(ya)(ya)(ya)(ya)(ya)高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)截(jie)止(zhi)(zhi)式(shi)(shi)氣動(dong)(dong)(dong)邏(luo)(luo)輯(ji)(ji)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)縮氣體為(wei)工作(zuo)(zuo)介質，用內部可(ke)動(dong)(dong)(dong)件(jian)(jian)的(de)(de)(de)動(dong)(dong)(dong)作(zuo)(zuo)改(gai)變(bian)氣流的(de)(de)(de)流動(dong)(dong)(dong)方向(xiang)，從而在(zai)(zai)氣壓(ya)(ya)(ya)(ya)(ya)(ya)傳動(dong)(dong)(dong)中實(shi)現邏(luo)(luo)輯(ji)(ji)和(he)放(fang)大等功(gong)能(neng)的(de)(de)(de)控(kong)制元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)。氣動(dong)(dong)(dong)邏(luo)(luo)輯(ji)(ji)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)有(you)高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)截(jie)止(zhi)(zhi)式(shi)(shi)、滑閥式(shi)(shi)和(he)高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)膜片式(shi)(shi)等。為(wei)高(gao)壓(ya)(ya)(ya)(ya)(ya)(ya)截(jie)止(zhi)(zhi)式(shi)(shi)氣動(dong)(dong)(dong)邏(luo)(luo)輯(ji)(ji)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)。它(ta)的(de)(de)(de)基(ji)本部分由膜片推(tui)動(dong)(dong)(dong)的(de)(de)(de)閥芯(xin)和(he)閥座組(zu)成。當(dang)P口(kou)(kou)氣壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號(hao)為(wei)零(ling)時(shi)，彈簧使閥芯(xin)壓(ya)(ya)(ya)(ya)(ya)(ya)向(xiang)上閥座，壓(ya)(ya)(ya)(ya)(ya)(ya)縮氣體由 PS口(kou)(kou)流向(xiang)PB口(kou)(kou)；當(dang)P口(kou)(kou)出現氣壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號(hao)時(shi)，將膜片連同閥芯(xin)壓(ya)(ya)(ya)(ya)(ya)(ya)向(xiang)下閥座,堵死PS口(kou)(kou)與PB口(kou)(kou)的(de)(de)(de)通道，并使 PB口(kou)(kou)放(fang)空，壓(ya)(ya)(ya)(ya)(ya)(ya)力為(wei)零(ling)。這(zhe)樣，PB口(kou)(kou)壓(ya)(ya)(ya)(ya)(ya)(ya)力的(de)(de)(de)有(you)無，與P口(kou)(kou)氣壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號(hao)的(de)(de)(de)存在(zai)(zai)具有(you)“非門”的(de)(de)(de)邏(luo)(luo)輯(ji)(ji)關系（當(dang)P口(kou)(kou)的(de)(de)(de)氣壓(ya)(ya)(ya)(ya)(ya)(ya)信(xin)號(hao)存在(zai)(zai),PB 口(kou)(kou)的(de)(de)(de)壓(ya)(ya)(ya)(ya)(ya)(ya)力就(jiu)不(bu)(bu)存在(zai)(zai),即(ji)為(wei)“非”）。適當(dang)改(gai)變(bian)結(jie)構和(he)對元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)作(zuo)(zuo)不(bu)(bu)同組(zu)合，即(ji)可(ke)得到其他(ta)的(de)(de)(de)邏(luo)(luo)輯(ji)(ji)關系。P口(kou)(kou)的(de)(de)(de)信(xin)號(hao)氣壓(ya)(ya)(ya)(ya)(ya)(ya)遠小于被控(kong)制的(de)(de)(de)PB口(kou)(kou)氣壓(ya)(ya)(ya)(ya)(ya)(ya)，所以元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)同時(shi)能(neng)起放(fang)大作(zuo)(zuo)用。氣動(dong)(dong)(dong)邏(luo)(luo)輯(ji)(ji)元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)可(ke)用在(zai)(zai)易燃、易爆、強(qiang)磁、輻射、潮濕和(he)粉塵等惡劣(lie)工作(zuo)(zuo)環境(jing)中。元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)結(jie)構簡單，對氣源凈化和(he)穩壓(ya)(ya)(ya)(ya)(ya)(ya)要求不(bu)(bu)高(gao)，但(dan)響(xiang)應(ying)速度較(jiao)慢，不(bu)(bu)宜組(zu)成復(fu)雜的(de)(de)(de)控(kong)制系統。由于元(yuan)(yuan)(yuan)(yuan)件(jian)(jian)內有(you)可(ke)動(dong)(dong)(dong)件(jian)(jian)，在(zai)(zai)強(qiang)烈沖擊和(he)振動(dong)(dong)(dong)工作(zuo)(zuo)環境(jing)中，有(you)產生誤動(dong)(dong)(dong)作(zuo)(zuo)的(de)(de)(de)可(ke)能(neng)。