压力油箱建模及仿真分析

压力油箱是气动与液压两者相协调工作的典型元件，压力油箱工作性能是否满足要求，直接影响到整个液压系统能否正常工作。因此对压力油箱进行仿真分析，研究各工况下油箱的工作性能十分必要。利用液体静压力方程建立油液压力数学模型，利用质量守恒和能量守恒的思想建立气体数学模型。以数学模型为理论基础，以AMESim下的AMESet为技术手段，创建压力油箱自定义子模型，并在AMESim中搭建系统验证其正确性。为研究压力油箱子模型工作特性，在AMESim中给予变化负载，分别得出油箱压力变化曲线、气体温度变化曲线、液面高度变化曲线等。通过分析所得曲线，验证自定义子模型正确性。

Modeling and Simulation of Pressurized Tank

The pressurized tank is a typical component which connects pneumatic and hydraulic parts. The performance of pressurized tank is so important that it determines whether the hydraulic system works smoothly. So it is necessary to research the pressurized tank under various operating mode. By the hydrostatic pressure equation, the law of conservation of mass and the law of energy conservation, the hydraulic model and the mathematical model of gas are established respectively. The submodel of pressurized tank is established in AMESim/AMESet. To obtain the performance characteristics of pressurized tank system with varying loads, change curves of pressure, temperature of gas, height of liquid are plotted out. By analyzing the simulation results, we verify the accuracy of the submodel of pressurized tank.