液压脉冲系统的压力瞬态脉动仿真研究

Simulation Research of Transient Impulse of Pressure in Hydraulic Impulse System

液压系统的压力瞬态脉动直接影响到液压元件的使用期限,液压脉冲系统是产生压力瞬态脉动、考核液压元件寿命的重要设备。本文应用特征线法建立了管内流体非恒定流动的数学模型,并在此基础上对液压脉冲系统进行了建模与仿真;并对实际波形与仿真波形进行了比较,分析了影响波形的因素。结果表明:这种建模方法有效,仿真结果准确。

Transient impulse of pressure in hydraulic impulse system directly influences the lifetime of hydraulic component. The hydraulic impulse system is an important equipment to produce transient impulse of pressure and to test the lifetime of hydraulic component. A mathematical model of fluid non - steadily flowing inside pipeline was established based on characteristic method. The process of establishing model and simulation was described, factual wave was compared with simulation wave, the dement of affecting wave parameter was analyzed, it is showed that the method is effective and the simulation result is accurate.