【摘要】 对非平衡电桥的灵敏度和非线性误差进行研究,得到了实验结果和理论值一致的结果:对于灵敏度,当K=1时灵敏度最高,K越大或越小时灵敏度越低;对于非线性误差,则K越大非线性误差越小,K越小非线性误差越大,且非线性误差与输入电阻相对变化量成正比。在应用非平衡电桥进行测量时,若对灵敏度要求较高,而对非线性误差的要求不那么高的情况下,可取K=1;若要求非线性误差尽量小,而对灵敏度的要求不需要太高的情况下,可取K=10。更多还原

【Abstract】 In this paper,the sensitivity of the non-equilibrium bridge and the nonlinear error has been studied.The experiment results in good agreement with theoretical analysis.For the sensitivity,when the value of K is one,it is the highest,otherwise it would decrease.The nonlinear error is inversely proportional to the value of K and is proportional to the relative variable of input resistance.The value of K choose 1 is suitable for situations which require high sensitivity and do not highly demand accuracy;and choose 10 is suitable for situations which require high accuracy and do not highly demand sensitivity as well.更多还原