Continuous-Time Wiener-Model Predictive Control of a pH Process

This paper deals with a novel formulation of continuous-time model-predictive control for nonlinear systems. A nonlinear-mapping approximation, employing a fuzzy system, is also an integral part of the control scheme, and thus removes the need for output-function invertibility. Analytical formulation of the control law makes it possible to use the method in practice, especially in chemical industry. An illustrative experiment is conducted to compare the proposed approach with a method of nonlinear robust H_infin control of a pH neutralization process.