In order to study on the vibration characteristics of the hydraulic gate with the test method

on the basis of the performance indexes analysis of the piezoelectric accelerometer

HK9104 piezoelectric accelerometer is chosen

the test system is designed

the model test is carried out with the pulse hammer method.The modal state vibration type and the modal parameters of the gate structure are obtained by the modal analysis.The results show that the natural frequency of the gate is mainly low frequency and is distributed in a wide range and flow-induced vibration occurs easily.The piezoelectric accelerometer has good low frequency response characteristics and high sensitivity.