通过仔细选择和使用应变计,可以保证这种困难的测量得到良好的结果。应变计是很多种类传感器包括压力传感器、称重传感器、转矩传感器以及位置传感器等使用的基础检测元件。大多数应变计都是箔片型,有各种形状和尺寸选择,满足各种应用(图1)。它们由安装在支撑材料上的一种电阻式箔片结构组成。其工作原理是:当给箔片施加应力时,箔片的电阻会按一定的规律改变。箔片规有最高的精度,但它们也很 By careful selection and use of strain gages, it is possible to ensure good results with this difficult measurement. Strain gauges are the basic sensing components used by many types of sensors, including pressure sensors, load cells, torque sensors, and position sensors. Most strain gauges are foil-type, with a variety of shapes and sizes to suit a wide range of applications (Figure 1). They consist of a resistive foil structure mounted on a support material. The working principle is: When the stress is applied to the foil, the foil resistance will change according to certain rules. Foil gauge has the highest accuracy, but they are also very