一、引言当今用电阻应变片作为传感器的测量元件是一种通常的做法。30多年前,荷兰自然科学研究中心(TNO)开始研制这种传感器,在当时虽然工业和科研需要,但在多数情况下还不能作为商品提供。其初级设计通常是以贴有应变片的圆棒、圆筒或圆环作为测量元件。 I. INTRODUCTION Nowadays it is common practice to use a strain gage as a measuring element for a sensor. More than 30 years ago, TNO started developing this sensor, which at the time was in most cases not yet available as a commodity, although it needed industrial and scientific research. Its primary design is usually based on a gage bar, cylinder or ring as a measuring element.