GAS-ANALYSIS BY PARTIAL MODEL-BUILDING

An advanced gas analysis of multicomponent gas mixtures using non-selective sensor elements is presented. The analysis consists of two steps: first, classification, whereby a measurement of an unknown substance must be identified with one of several classes of possible gases or gas mixtures; secondly, quantification, whereby the concentrations of the gas components can be estimated by non-linear models, which are specific to the class of a gas mixture. Error bounds for both classification and quantification are discussed and experimental results of methane/n-butane and methane/carbon monoxide gas mixtures are presented. © 1990.