【正文】
將造成明顯的測(cè)力誤差。 當(dāng)筒式測(cè)力傳感器上、下端面均勻受力時(shí),在彈性體貼片部位的整個(gè)圓周上應(yīng)力(應(yīng)變)的分布是均勻的。在實(shí)際應(yīng)用中,對(duì)于彈性體貼片部位應(yīng)力(應(yīng)變)分布影響較大的因素主要是彈性體受力條件的變化。二、改善應(yīng)力(應(yīng)變)不規(guī)則分布的“應(yīng)力集中”原則在機(jī)械零件或構(gòu)件的設(shè)計(jì)過程中,通常認(rèn)為應(yīng)力(應(yīng)變)在零件或構(gòu)件上是規(guī)則分布的,如果零件或構(gòu)件的截面形狀不發(fā)生變化,不必考慮應(yīng)力(應(yīng)變)分布不規(guī)則的問題。一般說來,普通的機(jī)械零件和構(gòu)件只須滿足在足夠大的安全系數(shù)下的強(qiáng)度和剛度即可,對(duì)在受力條件下零件或構(gòu)件上的應(yīng)力分布情況不必嚴(yán)格要求??梢哉f,測(cè)力傳感器的性能主要取決于其彈性體的形狀及相關(guān)尺寸。本文主要介紹電阻應(yīng)變片式測(cè)力傳感器(以下簡稱測(cè)力傳感器)的原理、應(yīng)用和提高測(cè)力傳感器測(cè)量精度的方法。Abstract: The resistance strain gauge type sensor is most monly used in the geometry quantity and the machinery gauging quantity. It has many merits, for example, it has a long service life, reliable stable property, simple structure, small size, light weight, well frequency response.Meanwhile, there are also some shortings: it has a big misalignment under the big strained condition, the measuring accuracy and measured that the strength sensitivity is not so high.This article mainly introduction resistance strain gauge type sensor39。作業(yè)名稱 電阻應(yīng)變片式測(cè)力傳感器簡介系 別 ____電控系______專 業(yè) __電子信息工程_____課程名稱 __傳感器與檢測(cè)技術(shù)