1980年,我国进口的第一台 AMSLER45吨高频疲劳试验机被安置在我所的试验室中。在这台试验机的电控部份有一种力值解调电路(见原理图),比较新颖。此电路所用元件少,并且,当传感器受到温度变化影响而偏离原来的标定值时,还能起到补偿作 In 1980, China imported the first AMSLER 45 tons of high-frequency fatigue testing machine was placed in my laboratory. In this part of the test machine has a force-value demodulation circuit (see schematic), more novel. This circuit uses fewer components, and, when the sensor is subject to temperature changes and deviate from the original calibration value, but also play a compensation