問(wèn)答題

下圖所示∑R1由N個(gè)應(yīng)變片串聯(lián)而成,受拉應(yīng)變,各應(yīng)變片的應(yīng)變絕對(duì)值為ξ1。∑R2由N個(gè)應(yīng)變片串聯(lián)而成,受壓應(yīng)變,各應(yīng)變片的應(yīng)變絕對(duì)值為ξ2。∑R1=∑R2=R3=R4,R3,R4是常值電阻。 應(yīng)變靈敏度系數(shù)為K,試求等臂電撟的輸出電壓U0。 若各應(yīng)變片的應(yīng)變的絕對(duì)值為:ξ12=0.00035,應(yīng)變靈敏度系數(shù)K=2,N=3,單個(gè)應(yīng)變片的阻值為120Ω,電源電壓為5V,計(jì)算等臂電撟的輸出電壓U0


您可能感興趣的試卷