COLUMBIA RESPIRATORY-CHAMBER INDIRECT CALORIMETER - A NEW APPROACH TO AIR-FLOW MODELING

被引：11

作者：

HEYMSFIELD, SB ^{[1
]}

ALLISON, DB ^{[1
]}

PISUNYER, FX ^{[1
]}

SUN, Y ^{[1
]}

机构：

[1] COLUMBIA UNIV,COLL PHYS & SURG,NEW YORK,NY

来源：

MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING | 1994年 / 32卷 / 04期

关键词：

INDIRECT CALORIMETRY; LINEAR SYSTEM; MODELING;

D O I：

10.1007/BF02524692

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A new air-flow modelling approach for respiratory-chamber indirect calorimetry is introduced. Based on thermodynamic theory, differential equations describing the dynamics of the calorimeter are derived. These equations are then developed into a linear state space model that can be conceptualized as a modern control system. Furthermore, both the system/output noises and input/output delays are considered in the model in the context of real applications. Finally, system accuracy is analysed so that the parameters in the calorimeter can be selected to minimise the error in estimating energy expenditure in humans.

引用

收藏

页码：406 / 410

页数：5

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