The improvement of the energy utilization rate of a hydraulic vibration-excitation system is critical to the research and development of hydraulic vibration equipment. In this paper, a hydraulic vibration-excitation system controlled by a new type of shock rotary vibrator is proposed. A system model considering the pipeline effect was established for the hydraulic shock phenomenon. In addition, the model was compared with the one that does not consider the pipeline effect. The effectiveness of the proposed model was verified experimentally. Finally, the shock phenomenon during the process of switching the working state of the vibrator and the influence of certain important parameters of the system on the vibration output were investigated based on the proposed model. The results showed that (1) the hydraulic shock phenomenon occurred when the working state of the hydraulic vibrator was switched and (2) the hydraulic shock wave could effectively improve the excitation force of the system. The excitation force increased with an increase in the oil supply pressure, spindle speed, and load. However, it was negatively correlated with the spring stiffness. The amplitude of the vibration waveform output was positively correlated with the oil supply pressure and negatively correlated with the spindle speed and load. The amplitude first increased and then decreased as the stiffness of the vibration spring increased. The only influence of the precompressed length of the spring on the system output was its alteration of the vibration center of the system output vibration.

中文翻译：

---

液压激振器控制振动系统的研制及参数分析

提高液压激振系统的能量利用率是液压激振设备研发的关键。本文提出了一种由新型冲击旋转振动器控制的液压激振系统。针对液压冲击现象，建立了考虑管道效应的系统模型。此外，该模型与不考虑管道效应的模型进行了比较。实验验证了所提出模型的有效性。最后，基于所提出的模型研究了振动器工作状态切换过程中的冲击现象以及系统某些重要参数对振动输出的影响。结果表明：（1）液压激振器工作状态切换时会出现液压冲击现象；（2）液压冲击波能有效提高系统激振力。激振力随着供油压力、主轴转速和负载的增加而增加。然而，它与弹簧刚度呈负相关。振动波形输出的幅值与供油压力呈正相关，与主轴转速和负载呈负相关。随着振动弹簧刚度的增加，振幅先增大后减小。弹簧的预压缩长度对系统输出的唯一影响是它改变了系统输出振动的振动中心。