PH neutralization process as a benchmark for testing nonlinear controllers

This work outlines the pH neutralization process as a benchmark for nonlinear control design. The typical industrial conditions for this class of process are analyzed in order to elaborate a proposal-for laboratory equipment that closely resembles a real system and also furnishes an excellent test bench for verifying new control strategies. This equipment has been installed at National University of San Juan, Argentina: The. control-problem namely, the benchmark, with all of its operating restrictions is presented for real applications. The benchmark representation capability is discussed. The final goal is to define a pH region where the model has a good representation capability for industrial acid-mixtures. Several experiments conducted at the laboratory assembly demonstrate the effectiveness of the proposed benchmark. Finally, a PID controller is presented as a reference for comparing the performance of tested nonlinear controllers.