Published: CABEQ 17 (4) (2003) 267–275
Paper type: Original Scientific Paper

Download PDF

Sliding Mode Control for a Continuous Bioreactor

H. J. Tham, K. B. Ramachandran and M. A. Hussain

Application of sliding mode control for a continuous bioreactor operation is studied, both by deterministic and adaptive approaches. Based on the results from these two approaches, a hybrid approach to sliding mode control is proposed. Performance of this sliding mode controller is shown through simulation studies for two different fermentation processes. To assess the performance of the controller, set point changes, external disturbances and variations in parameters are considered. The good performance of the sliding mode controller for the nonlinear system is demonstrated, especially for its ability to reject disturbances. The invariance property of sliding mode controller is also shown. Its performance is also compared with a conventional PI controller.

Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License

bioreactor, PI controller, robust control, Sliding Mode Control