基于Modelica的泵车臂架系统多领域耦合动力学建模与仿真

主要介绍一种基于 Modelica 语言的泵车臂架系统多领域耦合动力学仿真建模方法. 泵车臂架系统是典型的机械、液压、控制等多领域耦合系统,在其频繁的启动、制动过程中,变幅机构和液压元件均承受着强烈的冲击和振动. 传统的单一领域动力学建模方法很难全面反映泵车臂架系统的整体动力学性能,然而通过几种仿真工具进行联合仿真的方法亦难免存在建模效率、仿真速度等方面的问题. 针对以上不足,以某型泵车为研究对象,提供一种基于多领域统一建模语言 Modelica 的机械、液压及控制等多场耦合的泵车臂架系统动力学建模方法,并对其工作过程进行了动态仿真. 该模型具有模块化、层次化、规范化和参数化,以及仿真模型互操作性和重用性强的特点.

Multi field coupling dynamics simulation for the truck system of pump base on modelica

To make a study of Truck System of Pump,a multi fields coupling dynamic model concerning the mechanical,hydraulic of the mobile Truck System is established using Mworks platform based on the Modelica language. On the basis of the mechanical and hydraulic coupling modeling, a precise model of PD control on the hoisting amplitude and speed is proposed and control program is developed. The luffing working process of the Truck system is simulated and the luffing force curve over time is obtained in the hydrocylinder.The results show that the established coupling model of machine.fluid and control matches well with the practical situation and are of significant practical value to the multi domain coupling modeling of the Truck System of Pump mechanism.