Distillation column identification for control using Wiener model

Identification of distillation columns for model based control is studied using Wiener type models. A recently developed parametric identification of Wiener model is extended and used to solve the problem. The method provides solutions to the four problems of identification. It is control relevant and can treat both open-loop and closed-loop data. First the identification method is outlined, then two case studies will be presented, the first one is a simulated high purity distillation column based on first principle models, the second one is a crude unit atmospheric tower.