Indirect Adaptive Nonlinear Control of a Ph Process

Abstract

This paper presents an indirect adaptive control scheme for a pH process, which is diicult to control due to its nonlinear dynamics with uncertainties. A nonlinear controller is designed using a backstepping technique which can deal with a large class of nonlinear systems with parametric uncertainty. The nonlinear controller is combined with a parameter estimator to estimate the concentrations of the reaction invariants in the wastewater stream, and the stability of the proposed adaptive scheme is proved. Simulations show that uniform closed-loop performance is obtained despite the nonlinearities and parametric uncertainties.

Cite this paper

@inproceedings{Yoon1999IndirectAN, title={Indirect Adaptive Nonlinear Control of a Ph Process}, author={Seong-Sik Yoon and Tae-Woong Yoon and Dae Ryook Yang and Tae-Sik Kang}, year={1999} }