Additive Uncertainty Consideration for Nonlinear and Multivariable Bioprocess Control

C. FERNÁNDEZ; N. PANTANO; L. RODRIGUEZ; G. SCAGLIA

IEEE LATIN AMERICA TRANSACTIONS

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC

Año: 2021 vol. 19 p. 798 - 806

1548-0992

Biological processes are becoming more frequent nowadays due to the wide variety of products obtained from them and their possibility of making environmentally friendly some processes while high standard products are obtained. Nevertheless, controlling them has many difficulties due totheircomplex dynamic(multivariable and highly nonlinear systems)subject tomodeling uncertainties and external disturbancespresence. In this paper, two possibilities ofimprovement for a previously presented techniqueare proposed.In the first one, an approach based on the error estimation using Newton?s backward interpolation is included in the design equations to decrease the uncertainties effect; while in the second one, some tracking error integrators are added in the control action calculation.Alternatives are applied in a bioethanol system, tested under different conditions and compared to show the improvements