中文摘要：

一种由两位三通激振阀和单作用缸组成高频电液颤振器，高频激振阀采用转阀结构，控制油液交替进出液压缸，从而使弹性端盖产生受迫振动。采用AMEsim分析了液压颤振器的低频振动特性。实验中测量了不同压力与不同弹性端盖质量时电液颤振器在1Hz～4000Hz的振动频率下的压力、加速度、位移以及流量特性。分析表明，高频激振阀的工作频率可以达到4000Hz，激振器的谐振频率为320Hz时，谐振时弹性端盖振动振幅明显增加，此时颤振器所需输入功率很小，最理想的工作频率为320Hz。

英文摘要：

A high-frequency electro-hydraulic chattering exciter is proposed, which is composed of three-way valve and a single-acting cylinder. The High-frequency excitation valve with a rotary structure to control the frequency of fluid enter into the hydraulic cylinder alternately, so that the elastic cover forced vibration generated. Using AMEsim to analyze the low frequency vibration characteristics of the hydraulic flutter. In the Experiments, collected the variation characteristics of pressure, acceleration, displacement and flow in the vibration frequency of 1Hz to 4000Hz when system pressure was different and elastic cover was in different mass. The results shows that the working frequency of high-frequency excitation valve can reach 4000Hz, when the resonant frequency is 320Hz, elastic cap vibration amplitude increased significantly, but the input power required for flutter small, The ideal working frequency is 320 Hz.