Design and tuning of a ratio controller

In this paper a design and tuning procedure for a ratio control architecture is proposed. The overall control scheme is based on the use of the Blend station proposed in (Control Eng. Pract. 9 (11) (2001) 1215) and standard PI controllers. Since all the control parameters can be automatically selected based on a simple model of the process under control, the proposed methodology is easy to implement and therefore suitable to be applied in the industrial context. Simulation and experimental results show the effectiveness of the methodology for a wide range of processes.