• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2001, Vol. 37 ›› Issue (3): 41-45.

• 论文 • 上一篇    下一篇

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复杂流体网络动态建模与仿真新方法

贺尚红;李旭宇;钟掘   

  1. 长沙交通学院;中南大学
  • 发布日期:2001-03-15

NEW APPROACH TO DYNAMIC MODELING AND SIMULATION OF LARGE-SCALE FLUID NETWORKS

He Shanghong;Li Xuyu;Zhong Jue   

  1. Changsha Communications University Central South University
  • Published:2001-03-15

摘要： 对流体元件常规传递矩阵模型进行了改进，引入了一种处理节点边界条件的简便方法，提出了复杂流体网络在各种终端边界条件和多扰动条件下的动态建模方法。将频谱函数与时域响应的傅里叶逆变换转换为傅里叶正变换，利用著名的FFT算法实现了复杂流体网络的时域仿真计算，为大规模液压和气动网络的频率特性计算及时域动态仿真提供了全新的手段，有关算例及相关试验验证了本方法的正确性。

关键词: 传递矩阵, 大系统, 流体网络, 液压仿真, 液压建模

Abstract: The conventional transfer matrix models of fluid elements are modified to meet modeling of complex fluid networks. A convenient method of dealing with junction boundary conditions is introduced, and an efficient approach to dynamic modeling and simulation of large-scale fluid networks with multiple inputs and terminations is proposed. Based on h(t)=F-1[H(jw)],by transforming inverse fourier transform into fourier transform, into fourier transform, the fast fourier (FFT) algorithm is applied to dynamic simulation of akrge-scale fluid networks in time domain. The calculation results are good agreement with experiments.

Key words: Fluid network, Hydraulic modeling, Hydraulic simulation, Large-scale system, Transfer matrix

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