Handling control engineer preferences: Getting the most of PI controllers

By today, PI-PID controllers remain as reliable control solutions in a wide variety of industrial applications. Several tuning techniques have been designed and proposed successfully over the years. However the difficulty for tuning procedures increase as multiple requirements and criteria to evaluate the closed loop performance are demanded to be fulfilled. In this work, two approaches to incorporate control engineering preferences into an optimization statement for PI controller tuning are used. Their applicability is validated through simulation studies of well-known benchmark process.