The Effect of Dead-Time and Damping Ratio on the Relative Performance of MPC and PID on Second Order Systems

Most industrial processes are regulated using PID control. However, many such often operate far from optimally because may not be the most suitable control method. Moreover, second-order models represent a large class of all controlled systems. This work studies performance some commonly used controllers relative to MPC understand when it is more use Model predictive for this comparison has been successful controller after PID. It can concluded that improved achieved with MPC, even modest dead time and damping ratio relatively low. These improvements prominent dead-time dominant systems, whose time-constant at least three.