SYSTEMS AND METHODS FOR ADAPTIVE NON-LINEAR CONTROL OF PROCESS SYSTEMS

摘要

The invention provides systems and methods for generating an adaptive nonlinear controller and utilizing the adaptive nonlinear controller to regulate the operation of nonlinear process systems. In particular, a method is provided for generating a control model by defining an objective function utilizing a target function that specifies the desired response of the system and a state-space model representing the dynamics of the non-linear system. When executed by a controller the control model causes the regulated system to operate as specified by the target function and thereby produce a product that is consistent with various prescribed quality metrics.

主权项

1. A method for configuring a controller of a non-linear process system for producing a product, comprising:
providing a state-space model of the system, wherein the state space model comprises one or more state-space equations representing a relationship between at least one system variable x, and at least one system output y and is a function of at least one control variable u, wherein u is an input to the system and wherein y relates to a quality measure of the product; transforming, with one or more processors configured by executing instructions in the form of code therein, the state-space model into one or more controllable canonical equations, wherein at least one of the one or more controllable canonical equations includes the control variable u; generating, with the one or more processors, an objective function J, wherein generating the objective function includes:
selecting, with the one or more processors, the objective function J from among a plurality of objective functions stored in a non-transitory computer readable storage medium, wherein J is selected based on at least an order of the state space model, and wherein J is a function of the system output y, the derivatives of y and a control input v, a gain λ and system constants a and b, wherein control input v defines one or more operational set-points of the system, andinputting, with one or more processors, the one or more controllable canonical equations into the selected objective function; minimizing, with one or more processors, the objective function with respect to the control variable u; selecting, with one or more processors, parameters of the control system including the gain λ and a and b according to constraints of the non-linear process system; programmatically configuring the controller to implement a control algorithm defined by the minimized objective function in view of the selected parameters.