METHOD AND A SYSTEM FOR TUNING MULTIVARIABLE PID CONTROLLER

摘要

A method and system are disclosed for tuning a Multivariable Proportional-Integral-Derivative (PID) controller in a process plant. The plant can have at least one PID controller for controlling the processes of the plant. The method can include formulating Model Predictive Control (MPC) for the process model of the plant; obtaining a desired (e.g., optimal control) solution for at least one designated (e.g., critical) region in relation to the MPC; determining PID tuning parameters corresponding to the control solution; and tuning the PID controller with the PID tuning parameters.

主权项

1. A method for tuning an adaptive Multivariable Proportional-Integral-Derivative (PID) controller in a plant using a Model Predictive Control (MPC), the method comprising:
formulating the MPC for a process model of the plant; obtaining an affine control solution for at least one designated region, in relation to the MPC; obtaining a transfer function for mapping the affine control solution to one or more equivalent PID tuning parameters; determining the one or more equivalent PID tuning parameters corresponding to the affine control solution using the obtained transfer function; and tuning the adaptive Multivariable PID controller with the one or more equivalent PID tuning parameters to control the plant in the at least one designated region.