GUIDANCE SYSTEM BY CONTROL OF DERIVATIVE

摘要

Guidance System for controlling output variables of single-input single-output or multi-input multi-output processes, where the process parameters are known or unknown and time-varying. The guidance system of the present invention generates a desired trajectory for a process output variable, and based on said desired trajectory, computes a set point for the derivative variable of said process output variable. This set point is then applied to a model based advanced controller for said derivative variable and the control action generated by said model based advanced controller is applied to the process and guides the process evolution in such a way that said process output variable converges towards said desired trajectory.

主权项

1. A method for generating a control variable during each of a plurality of control instants k, said control variable to be applied to an apparatus which carries out a process with at least one input variable and at least one output variable, said apparatus varying one of said variables, at least one input variable according with the value of said control variable, said method guiding said output variable towards an output set point, said method comprising the steps of:
(A) Generating a derivative variable from said output variable; (B) Generating a future desired trajectory for driving said output variable towards said output set point with a desired dynamic; (C) Computing from said desired trajectory a derivative set point for said derivative variable; (D) Using a model based advanced controller for said derivative variable for computing said control variable that will drive said derivative variable to said derivative set point and, as a consequence, said output variable towards said desired trajectory. (E) Applying said control variable in a manner which will cause said apparatus to vary one of said variables, at least one input variable in accordance therewith.