摘要
本文利用微循环模型来研究容积脉搏血流的频率响应特性 ,从伯德图中找到影响模型频率响应的两个特征参数 ,即阻尼比 ξ和转角频率ωn。通过分析这两个特征参数的数值及其变化 ,可以确认出微循环的不同优劣状态。实验结果证实了模型分析结果。
To find out searching new microcirculation parameters in frequency domain,a study of frequency response of the model of microcirculation is introduced in this paper.By using Bode Graphic of transfer function,we found two characteristics parameters of the model:damping ratio ξ and break frequency ω n 。By means of analysing the change of ξ and ω n ,different states of microcirculation function can be identified.The experimental results are consistent with the analytical results of model.The analysis of frequency response is of great help in evaluation of microcirculation function.
出处
《北京生物医学工程》
EI
2001年第3期181-184,180,共5页
Beijing Biomedical Engineering
基金
北京市教委基金资助项目 ( 9610 0 40 1)
关键词
频率响应
容积脉博血流
微循环
阻尼比
转角频率
Frequency response Blood flow of volume pulse Microcirculation Damping ratio break frequency
