键图建模和20SIM建模仿真平台

Modeling of Bond Graphs and 20SIM Modeling and Simulation Software

键图法为多能域动态物理系统的建模提供了一个清晰而规范的工具。模型建立后 ,下一步骤就是通过仿真来研究系统的性能。首先由键图模型导出系统的状态方程 ,再采用各种通用的仿真语言 ,但过程繁琐复杂。 2 0SIM提供了一个交互式的、面向对象的建模、仿真平台 ,用户用所见即所得的方式建立系统的键图模型后 ,可自动生成仿真程序 。

This paper discusses the use of the modeling and simulation software 20SIM.Bond graphs are a clear and standard tool for performing the difficult step of setting up a model for dynamical physical systems. When the modeling is set up, the next step is to study the time response of the system by simulation. Usually, it is necessary to derive the system state equations from the bond graph and the analyst must use a general simulation language, which is a complicated process. 20SIM provides an interactive tool which supports object-oriented modeling. It can generate automatically a simulation program when a model has been set up and shows the result in the form of a plot, an animation or numerical values.