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Inversion of spectroscopic measurements for extracting particle size distribution

Pariset, Carlo and Thennadil, Suresh (2009) Inversion of spectroscopic measurements for extracting particle size distribution. In: 6th International Multi-Conference on Systems, Signals & Devices, 2009-03-23 - 2009-03-26, Djerba.

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Abstract

Information on the particle size distribution (PSD) of a particulate system is contained in the turbidity measurements. To obtain the PSD from such measurements, the inversion of a Fredholm integral of the first kind is required. To solve this ill-posed problem Tikhonov regularization technique can be used. The central issue in every regularization problem is the choice of an effective regularization parameter and to perform such a choice in a complete automatic way without any inputs from the operator. In this work the PSD of polystyrene spheres in water are estimated from turbidity measurements using a CARY5000 spectrometer. Two formulations for the search of the regularization parameter based on cross-validation are compared and a two-step process integrating the two formulations is investigated.

Item type: Conference or Workshop Item (Paper)
ID code: 35533
Keywords: generalized cross validation, regularization parameter, Tikhonov regularization, turbidity, Fredholm integral equations , particle size measurement , spectrometers , spectroscopy , Chemical engineering
Subjects: Technology > Chemical engineering
Department: Faculty of Engineering > Chemical and Process Engineering
Related URLs:
    Depositing user: Pure Administrator
    Date Deposited: 01 Nov 2011 17:41
    Last modified: 04 Oct 2012 17:51
    URI: http://strathprints.strath.ac.uk/id/eprint/35533

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