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This paper presents a methodology to detect online the physiological state of strains in a bioreactor. The biologic reactions means that one of the pathways of the metabolism is activated and in this case the microorganisms will produce or will consummate the discrete-event system (DES) is synthesized applying the maximum of modulus of the wavelet transform on measured signals constrained to the biotechnologist expert validation. The determination of holder coefficient by differential evolutionary algorithms allows to make the difference between different discontinuities and to obtain the segmentation of the signals. All these evaluations lead to associate the signals variations during the time to physiological states.
Date of Conference: 6-9 Oct. 2003