ON-LINE ADAPTIVE MODEL PREDICTIVE CONTROL IN PROCESS CONTROL SYSTEM

摘要

PROBLEM TO BE SOLVED: To create and use an adaptive DMC type or other MPC controller.SOLUTION: An embodiment uses a process model to generate an MPC control model, creates an MPC control algorithm, and downloads it to an MPC controller on the basis of the new control model while the MPC controller is operating on line. This technique, which is generally applicable to single-loop MPC controllers and is particularly effective in MPC controllers with a control horizon of one or two, enables an MPC controller to be adapted during normal operation of a process and changes the process model. The adaptive controller can be easily implemented within a distributed controller of a process control system, while providing the same control as or better control than a PID controller, especially in dead time dominant process loops, and in process loops that are subject to process model mismatch within process time to a steady state.