一种测量一维结构振动功率流的新方法

通过设计正弦和余弦形状PVDF传感器，提出了一种测量一维结构振动功率流和位移的新方法，并与用压电加速度传感器的测量结果进行了比较，结果表明：这种新的测量方法测量方便、数据精确，完全可以取代传统测量方法。并且PVDF传感器还可以同时测量角位移、弯矩、剪力等其它振动量，因此这种传感器功能齐全、应用广泛，具有重大的研究价值和现实意义。

A New Method for Measuring Power Flow of One-Dimensional Vibrating Structure

The paper gives a design of sine-shaped and cosine-shaped PVDF sensors, and outlines a new method for measuring power flow and transverse displacement of one-dimensional vibrating structure. The results measured by the PVDF sensors are compared with those obtained using traditional piezoelectric accelerator sensors. It is shown that the new measuring method is convenient and the result is accurate too. So the new measuring method can replace the traditional one. In additional, the PVDF sensors can be used to measure other vibration signals, such as angular displacement, bending moment and shear force. So the PVDF sensors have many functions and can be utilized widely,which have important value for research and practice.