Process Control: Modeling, Design, and Simulation

16.7. Summary

MPC is the most widely applied advanced control technique in industry. Our presentation focused on DMC, which has achieved a great deal of success in the petroleum refining and petrochemicals industries. Most MPC techniques have been based on step or impulse response models, but there has been a recent trend toward state space models. New mathematical techniques are making it easier to develop state space models from plant data. Regardless of the model type, the same basic ideas are used. At the current time step, future process output predictions are based on two contributions: the free or unforced response (how the outputs will change if no further control moves are made) and the forced response (the effect of current and future ...