论文部分内容阅读
一、前言动态电阻应变仪是测量瞬态应变的基本仪器。对这类仪器的基本要求是:输出的电流应与输入的应变量成正比,应具有内部标定器,作为输出量的标定量具。要求输出表具有一定区域的线性范围,当输入信号过大时,应通过已知衰减量的衰减器作用,使输出仍处干线性范围内。此外,当电阻应变计处于有动态波频率的场合下,在二次仪表方面会引起信号调
I. Introduction Dynamic resistance strain gauges are the basic instruments for measuring transient strain. The basic requirements for this type of instrument are: The output current should be proportional to the amount of strain applied and should have an internal calibrator as the calibration output for the output. The output table is required to have a linear range of a certain area. When the input signal is too large, it should pass the attenuator of the known attenuation so that the output is still in the linear range. In addition, when the resistance strain gauge in the dynamic frequency of the occasion, the secondary instrument will cause the signal tone