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Describing Function Approximation For Biomedical Engineering Applications

Kinnane, Oliver and Ringwood, John and Kelly, Damien and Malpas, Simon (2004) Describing Function Approximation For Biomedical Engineering Applications. Proceedings, the Irish Signals and Systems Conference ISSC 2004, Belfast. pp. 107-112. ISSN 0537-9989;

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Abstract

This paper focuses on the determination of suitable approximations for sigmoid-type nonlinear characteristics, which are common to physiological systems, particularly cardiovascular regulatory systems. These sigmoid nonlinearities have been implicated in the development of limit cycle oscillations in blood pressure. Approximations of the sigmoid are required since the describing function is not calculable for the all representations of the sigmoid characteristic. In this paper, we present a new approximation, which gives a better overall approximation of the sigmoid and hence, can assist the use of describing functions in the diagnostic analysis of cardiovascular function.

Item Type: Article
Keywords: Sigmoid; describing function; cardiovascular function;
Subjects: Science & Engineering > Electronic Engineering
Item ID: 1973
Depositing User: Professor John Ringwood
Date Deposited: 02 Jun 2010 15:45
Journal or Publication Title: Proceedings, the Irish Signals and Systems Conference ISSC 2004, Belfast
Publisher: IEE
Refereed: Yes
URI:

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