泵引起的液压系统振动分析

Analysis of Vibration Generated by Pump in Hydraulic Power System

通过液压系统产生振动和噪音的振源及振动能量传递的分析，开发了测定泵的振源特性的新方法─“２压力／２系统”法。介绍了用阻抗法求解管内压力脉动的方法及通用仿真程序包。实验表明，仿真结果与实测结果一致。

First analyze the source of fluid-borne vibration and noise as well as the fluid acoustic powers in hydraulic power systems. Then, a newly devieed '2 pressures/2 systems' method is presented to measure the fluid-borne vibratio characteristics (flow ripple and source impedance) of pumps. With this method, not only the hydraulic test circuit and calculation procedure become very simple compared to the former methods but also the tests can be performed very quickly. At last, a hydraulic simulation package is developed to simulate and analyze the pressure pulsations in any hydraulic pipelines generated by fluid power pumps. The experiments shows that the calculated results obtained by the present simulation package agree with the experimental results with sufficient accuracy for practical use.