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A knowledge based system for diagnosing microbial activities during a fermentation process

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Abstract

A knowledge based system, LAexpert, was developed to diagnose microbial activities during a fermentation process on the basis of specific rates determined on-line. The LAexpert is a supervisor for a process control system and assists operators in fault diagnosis. The LAexpert was implemented using a fuzzy expert system shell based on the object oriented programming tool Smalltalk V/Mac running in a Macintosh II computer. The shell can handle uncertainties both in the measurements and knowledge by fuzzy reasoning.

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Abbreviations

X g/l:

biomass dry weight (g/l)

S g/l:

substrate concentration (g/l)

P g/l:

product concentration (g/l)

μ c, νc, πc 1/h:

specific rates calculated from on-line measured data of X, S and P (1/h)

μ d, νd, πd 1/h:

specific rates read from database of BIOACS (1/h)

References

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Author information

Authors and Affiliations

  1. Soft-Point Oy, Valkjärrentie 1, SF-02150, Espoo, Finland

    M. Pokkinen (visiting scientist at Riken)

  2. Chemical Engineering Laboratory, The Institute of Physical and Chemical Research, Wako-shi, 351-01, Saitama, Japan

    Z. R. Flores Bustamante, H. Asama & I. Endo

  3. Laboratory of Biotechnology and Food Engineering, Helsinki University of Technology, SF-02150, Espoo, Finland

    R. Aarts & P. Linko

Authors
  1. M. Pokkinen
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  2. Z. R. Flores Bustamante
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  3. H. Asama
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  4. I. Endo
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  5. R. Aarts
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  6. P. Linko
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Pokkinen, M., Bustamante, Z.R.F., Asama, H. et al. A knowledge based system for diagnosing microbial activities during a fermentation process. Bioprocess Engineering 7, 331–334 (1992). https://doi.org/10.1007/BF00369487

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  • DOI: https://doi.org/10.1007/BF00369487

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