測控技術(shù)與儀器專業(yè)英語[unit12simpleinstrumentmodel](編輯修改稿)
2024-09-13 14:30 本頁面
【文章內(nèi)容簡介】 some other system, which will use the measurement. 數(shù)字信號通常發(fā)送給計算機(jī)處理器，以便可以顯示、存儲或傳輸數(shù)據(jù)作為其他系統(tǒng)輸出，并可以使用測量值。w Instrument model with amplifier, analog to digital converter, and puter output 帶放大器、A/D轉(zhuǎn)換器和計算機(jī)輸出的儀器模型1. Null Instrument 平衡點測定器，零點調(diào)整儀The null method is one possible mode of operation for a measuring instrument. A null instrument uses the null method for measurement. ● The null method 零點法對于測量儀器零點法是一種合理的運作模式。零點調(diào)整儀采用零點法作為測量方法。 In this method, the instrument exerts an influence on the measured system so as to opposite in value, yielding a null measurement. ● exerts an influence on 對…產(chǎn)生影響，對…施加影響在該方法中，儀器對測量系統(tǒng)產(chǎn)生了影響以便與值相反，創(chuàng)造出一個無效的測量。Typically, this is acplished by some type of feedback operation that allows the parison of the measurand against a known standard value. ● measurand 被測變量；被測性能；被測情況 standard value標(biāo)準(zhǔn)值通常，由某種類型的反饋操作運行，這種類型的反饋操作允許被測變量與已知標(biāo)準(zhǔn)值進(jìn)行比較。 Key features of a null instrument include: an iterative balancing operation using some type of parator, either a manual or automatic feedback used to achieve balance, and a null deflection at parity shown in .● parator 比較儀，比測儀 iterative 迭代的、重復(fù)的零點調(diào)整儀的主要特點包括：使用某種比測儀的重復(fù)平衡操作，手動或是自動的反饋用以實現(xiàn)平衡，和零偏斜。w w The measurand and the known quantities balance one another in a null instrument A null instrument offers certain intrinsic advantages over other modes of operation (., see deflection instruments). ● deflection instrument偏轉(zhuǎn)量儀器、偏擺儀器在零點調(diào)整儀中提供一定的內(nèi)在優(yōu)點優(yōu)于其他操作方式 (例如，偏擺儀器)。By balancing the unknown input against a know standard input, the null method minimizes interaction between the measuring system and the measurand. 通過平衡未知輸入和一個已知的標(biāo)準(zhǔn)的輸入，零點法將測量系統(tǒng)和被測變量之間的相互作用減到最小。As each input es from a separate source, the significance of any measuring influence on measurand by the measurement process in reduced. 因為每個輸入來自一個獨立的來源，任何測量的重要性通過測量過程降低對被測變量的影響。 In effect, the measured system sees a very high input impedance, thereby minimizing loading errors. ● In effect 實際上，事實上，生效 loading errors 負(fù)載誤差 實際上，測量系統(tǒng)看成一個非常高的的輸入阻抗，從而減少負(fù)載誤差。 This is
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