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Sliding controller design for a nonlinear fermentation system.

R Suárez-Cortez¹, J Alvarez-Gallegos, E González-Mora

¹Universidad Autónoma Metropolitana-Iztapalapa, Departamento de Matemáticas, A.P. 55-534 C.P. 09340, México D.F., México.

Biotechnology and Bioengineering

|January 20, 1989

Summary

This summary is machine-generated.

A novel sliding controller enhances continuous fermentation by robustly regulating substrate concentration despite parameter changes. Minor modifications reduce control variable chattering for improved stability.

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Area of Science:

Biochemical Engineering
Control Systems Engineering
Process Automation

Background:

Continuous fermentation processes require precise control for optimal yield.
Variations in process parameters can destabilize substrate concentration.
Existing control strategies may suffer from chattering or parameter sensitivity.

Purpose of the Study:

To design and evaluate a robust sliding controller for continuous fermentation.
To maintain optimal substrate concentration under dynamic process conditions.
To mitigate chattering effects in the control system.

Main Methods:

Sliding mode control (SMC) design for a continuous fermentation model.
Simulations to assess controller performance and robustness.
Introduction of a control variable modification to reduce chattering.

Main Results:

The designed sliding controller demonstrated high robustness.
Optimal substrate concentration was successfully regulated despite parameter variations.
Chattering effects were significantly decreased with the proposed modification.

Conclusions:

Sliding controller is a robust solution for continuous fermentation.
The control scheme ensures stable substrate regulation under process uncertainties.
The modification effectively reduces chattering, enhancing practical applicability.