目前国内检定标准应变仪大多用电阻式交流分压器,相对准确度一般为(1～5)×10~(-3),可在音频范围内使用,属于此种类型的标准器件有BYM型应变模拟仪和应变校正器等,它们的共同特点是电阻网络。我们是采用感应分压器作为标准比率器件来进行检定。关于电感网络与电阻网络的等效问题,是采用“感应分压器——电阻匹配网络”解决的。由于应变模拟仪已普遍采用,且有可适用于直流和交流的优点,故本文围绕着它的检定作梗概的介绍。一、感应分压器——电阻匹配网络感应分压器的原理图如图1,它是一个具有多盘的多位读数的分压器,在音频时,其输 At present, most of the verification standard strain gauges use resistive AC voltage divider, the relative accuracy is generally (1 ~ 5) × 10 ~ (-3) and can be used within the audio range. The standard devices of this type are BYM type Strain simulators and strain correctors, etc., and their common feature is the resistance network. We use the inductive voltage divider as a standard ratio device for verification. The equivalent problem of the inductance network and the resistance network is solved by the “sense voltage divider - resistor matching network”. Since strain simulators are commonly used and have the advantages of being suitable for DC and AC, this article revolves around the introduction of its verification. First, the sense voltage divider - resistor matching network sensing voltage divider schematic shown in Figure 1, which is a multi-bit multi-bit voltage divider, the audio, the input