基于Simulink的压路机振动液压系统管路动态特性仿真研究

Dynamic Characteristics Study of Hydraulic Pipes of the Hydraulic Vibration System of Roller Based on Simulink

以SR-12压路机振动液压系统为例,基于功率键合图-方块图方法及Simulink控制仿真软件,在仿真中,着重考察与管路的脉动频率、波形衰减速度和压力峰值等相关的因素,从而为实际的工程设计提供参考。研究表明:振动液压系统的小管径及长管路,有利于抑制系统的高频振荡以增强振动液压系统的稳定性,但延长了系统的动态响应时间及造成了较大的系统压力损失;对于大管径及短管路的振动液压系统,系统动态响应较快、压力损失小,但振动液压系统的高频振荡非常剧烈,稳定性较差。研究结果为大吨位压路机振动液压系统的设计提供理论依据。

To SR- 12 hydraulic vibration system of roller as an example, based on the power bond graph - block diagram and Simulink simulation software, In the simulation, focusing on the factors of the pulse of pipeline, the frequency of the speed and the pressure wave attenuation peak, so as to provide reference to the actual engineering design. The study results show that for the long and small diameter pipeline of hydraulic vibration system, whice is conductive to suppress high - frequency system oscillation to enhance the stability of hydraulic vibration system, but also extends the systemg dynamic response time and results in a greater loss of system pressure; for the short and big diameter pipeline, the fluid resistance and fluid sense get smaller, the System dynamic response is rapid, the system pressureloss is smaller, but the hydraulic vibration system has a intensive high -frequency oscillation and the stability is bad. The study results provide a theoretical support for the design of the large - tonnage roller hydraulic vibration system.