咱(zan)們在前面(mian)所舉的(de)幾個比(bi)如,其稱(cheng)重(zhong)傳(chuan)(chuan)感(gan)器靈(ling)敏(min)度(du)以S = 2mv / v 考(kao)慮(lv)的(de),如果靈(ling)敏(min)度(du)S = 1mv / v 來(lai)考(kao)慮(lv)會怎么(me)樣呢?對相同是選用(yong)單(dan)只稱(cheng)重(zhong)傳(chuan)(chuan)感(gan)器的(de)衡器,咱(zan)們來(lai)比(bi)較一(yi)下(xia):
稱重傳感器(qi)靈敏度S = 1mv / v 時:鼓(gu)勵電壓V = 12V, zui大(da)秤(cheng)量(liang)Emax = 150kg, 衡器(qi)zui大(da)秤(cheng)量(liang)Max = 150kg,zui大(da)凈輸出信號為:
鼓(gu)勵(li)電壓× 靈敏(min)(min)(min)度(du)×EMmaxax= 12v × 1mv / v ×115500kkgg = 12mv稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)靈敏(min)(min)(min)度(du)S = 2mv / v 時:鼓(gu)勵(li)電壓V = 12V, zui大(da)(da)(da)秤量(liang)(liang)Emax = 300kg, 衡(heng)(heng)器(qi)(qi)(qi)(qi)zui大(da)(da)(da)秤量(liang)(liang),zui大(da)(da)(da)凈輸出信(xin)號為(wei):鼓(gu)勵(li)電壓× 靈敏(min)(min)(min)度(du)× MEmaxax= 12v × 2mv / v ×310500kkgg = 12mv如果(guo)這只靈敏(min)(min)(min)度(du)S = 1mv / v 的(de)(de)(de)稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)的(de)(de)(de)zui小靜載(zai)荷Emin = 6kg,當準確度(du)等級為(wei)C3 級,即,nLC = 3000 時,有檢定分(fen)(fen)度(du)值(zhi)V = Emaxn-LCEmin = 1503k0g0-0 6kg = 0. 048kg而如前所述(shu)臺秤的(de)(de)(de)檢定分(fen)(fen)度(du)值(zhi)e = 0. 05kg。這樣,稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)的(de)(de)(de)檢定分(fen)(fen)度(du)值(zhi)和衡(heng)(heng)器(qi)(qi)(qi)(qi)分(fen)(fen)度(du)值(zhi),在S = 1mv / V 的(de)(de)(de)前提下,基本是(shi)(shi)(shi)挨近(jin)了。從而咱們能(neng)夠看出,當稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)響應(輸出)的(de)(de)(de)改變(bian)與相(xiang)應的(de)(de)(de)鼓(gu)勵(li)(施(shi)加的(de)(de)(de)載(zai)荷)的(de)(de)(de)改變(bian)之比(bi),只要是(shi)(shi)(shi)不大(da)(da)(da)于(yu)S = 1mv / v,nLC&ne 的(de)(de)(de)規則(ze)才(cai)是(shi)(shi)(shi)能(neng)夠建立的(de)(de)(de)。單(dan)只稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)的(de)(de)(de)衡(heng)(heng)器(qi)(qi)(qi)(qi)在電子衡(heng)(heng)器(qi)(qi)(qi)(qi)中采(cai)用單(dan)只稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)作(zuo)為(wei)力電轉化(hua)元件的(de)(de)(de)比(bi)如許多(duo),大(da)(da)(da)致能(neng)夠分(fen)(fen)為(wei)二類,一(yi)類是(shi)(shi)(shi)稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)zui大(da)(da)(da)秤量(liang)(liang)(Emax)大(da)(da)(da)于(yu)衡(heng)(heng)器(qi)(qi)(qi)(qi)zui大(da)(da)(da)秤量(liang)(liang)(Max)的(de)(de)(de)量(liang)(liang)值(zhi)許多(duo)的(de)(de)(de);一(yi)類是(shi)(shi)(shi)稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)zui大(da)(da)(da)秤量(liang)(liang)(Emax ) 的(de)(de)(de)量(liang)(liang)值(zhi)挨近(jin)衡(heng)(heng)器(qi)(qi)(qi)(qi)zui大(da)(da)(da)秤量(liang)(liang)(Max)的(de)(de)(de)量(liang)(liang)值(zhi)的(de)(de)(de)。這兒講的(de)(de)(de)這二類稱(cheng)(cheng)(cheng)重(zhong)傳(chuan)(chuan)感器(qi)(qi)(qi)(qi)的(de)(de)(de)靈敏(min)(min)(min)度(du)都是(shi)(shi)(shi)在相(xiang)同大(da)(da)(da)小的(de)(de)(de)情況下進行比(bi)較的(de)(de)(de)。
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