東(dong)莞專賣(mai)REXROTH壓力(li)傳感器/REXROTH中(zhong)國
REXROTH壓力(li)傳感器的(de)機(ji)械接(jie)收(shou)原(yuan)理就(jiu)是建立(li)在(zai)此基(ji)礎上(shang)的。相對(dui)式測(ce)振儀(yi)的(de)工作接(jie)收(shou)原(yuan)理是(shi)在測(ce)量時(shi),把儀(yi)器(qi)固(gu)定在(zai)不動的支(zhi)架(jia)上(shang),使觸(chu)桿與(yu)被測(ce)物(wu)體的(de)振(zhen)動(dong)方(fang)向(xiang)*,並借彈簧(huang)的彈性(xing)力(li)與(yu)被測(ce)物(wu)體表面(mian)相接(jie)觸(chu),當(dang)物(wu)體振(zhen)動(dong)時(shi),觸(chu)桿就跟(gen)隨(sui)它(ta)壹(yi)起(qi)運動(dong),並推動(dong)記錄筆(bi)桿在移(yi)動(dong)的(de)紙(zhi)帶(dai)上(shang)描(miao)繪(hui)出(chu)振動(dong)物(wu)體的(de)位(wei)移(yi)隨(sui)時間(jian)的變化曲線,根(gen)據(ju)這個記錄曲線可(ke)以(yi)計算(suan)出(chu)位移(yi)的大(da)小(xiao)及頻率等(deng)參數。 REXROTH壓力(li)傳感器由此可(ke)知,相對(dui)式機(ji)械接(jie)收(shou)部分(fen)所(suo)測(ce)得(de)的結果是被測(ce)物(wu)體相對(dui)於(yu)參考(kao)體的(de)相對(dui)振動,只(zhi)有當(dang)參考(kao)體不(bu)動(dong)時(shi),才(cai)能測(ce)得(de)被測(ce)物(wu)體的(de)振(zhen)動(dong)。這樣(yang),就(jiu)發(fa)生(sheng)壹個問(wen)題(ti),當(dang)需要(yao)測(ce)的是(shi)振動(dong),但又找(zhao)不到(dao)不動(dong)的參考(kao)點(dian)時,這類(lei)儀(yi)器(qi)就(jiu)無用武(wu)之地。例如(ru):在行駛的內燃機(ji)車(che)上(shang)測(ce)試內燃機(ji)車(che)的(de)振動,在地(di)震時測(ce)量地(di)面(mian)及樓房的振(zhen)動(dong)……,都不存(cun)在壹個不(bu)動(dong)的參考(kao)點(dian)。在這種(zhong)情況下(xia),我(wo)們(men)必須用(yong)另壹(yi)種(zhong)測(ce)量方(fang)式的測(ce)振儀(yi)進(jin)行測(ce)量,即利(li)用(yong)慣性式測(ce)振儀(yi)。
REXROTH壓力(li)傳感器內部機(ji)電變換原理的(de)不同,輸(shu)出(chu)的電(dian)量也(ye)各(ge)不(bu)相同。有(you)的是(shi)將(jiang)機(ji)械量(liang)的變化變換為(wei)電動勢(shi)、電(dian)荷(he)的變化,有(you)的(de)是將(jiang)機(ji)械振(zhen)動量的變化變換為(wei)電阻、電感(gan)等電(dian)參量的(de)變化。壹(yi)般(ban)說(shuo)來,這些(xie)電(dian)量並(bing)不能直接(jie)被後續的(de)顯(xian)示(shi)、記錄、分(fen)析儀(yi)器(qi)所(suo)接(jie)受(shou)。因(yin)此針(zhen)對(dui)不同機(ji)電變換原理的(de)傳感器,必須附以(yi)專配的測(ce)量線路。測(ce)量線路的(de)作用是(shi)將(jiang)傳感器的(de)輸(shu)出(chu)電量(liang)zui後變為(wei)後續顯(xian)示(shi)、分析儀(yi)器(qi)所(suo)能接(jie)受(shou)的(de)壹(yi)般(ban)電壓信號。因(yin)此,振(zhen)動傳感器按(an)其功能可(ke)有以(yi)下(xia)幾(ji)種分類方(fang)法: REXROTH壓力(li)傳感器基(ji)於(yu)電磁(ci)感(gan)應(ying)原(yuan)理,即當(dang)運動(dong)的導體在(zai)固(gu)定的(de)磁(ci)場(chang)裏(li)切(qie)割磁(ci)力(li)線時,導體兩(liang)端就感(gan)生出(chu)電動(dong)勢,因(yin)此利(li)用(yong)這壹(yi)原(yuan)理而生產的傳感器稱(cheng)為(wei)電動式傳感器。
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