为了获得设计晶体压杆传感器的正确原则,本文对晶体压杆的动力性质进行了实验研究。研究的结果表明,就晶体与压杆的匹配问题而言,单纯考虑声阻抗匹配与否是不够的。为了取得正确的压力波形,就必须把晶体与压杆看作两个弹性振动系统,来研究它们的相互作用。根据这一分析,我们提出改善传感器性能的几种方法。经过实验,证明这些方法是有效的。 In order to obtain the correct principle of designing the crystal rod sensor, experimental study on the dynamic properties of crystal rod is carried out in this paper. The results of the study show that it is not enough to consider the acoustic impedance matching in terms of the matching between crystal and strut. In order to obtain the correct pressure waveform, the crystal and pressure bar must be treated as two elastic vibration systems to study their interaction. Based on this analysis, we propose several ways to improve sensor performance. After experiments, these methods proved to be effective.