On Reproducing Existing Controllers as Model Predictive Controllers

Mathias Foo, Erik Weyer

Research output: Chapter in Book/Report/Conference proceedingChapter

7 Citations (Scopus)

Abstract

The ability to take constraints explicitly into account in the optimisation problem formulation has made Model Predictive Control (MPC) a popular control strategy. However, finding the weights in the optimisation criterion is often non-trivial and requires a fair bit of trial-and-error. Conventional controllers such as PID, on the other hand, are relatively easy to tune, and they often achieve satisfactory performance when there are no constraints. In this paper, we present three approaches for designing an MPC such that it reproduces the conventional controller when there are no constraints. The first approach is from the existing literature where a full order observer is used in the reverse engineering. The second and third approach used a reduced order observer and state augmentation respectively are proposed. The obtained controller can also serve as an initial MPC which can be further fine tuned, and constraints can later be added to evaluate any potential benefit of using MPC compared to the original controller. © 2011 ENGINEERS AUSTRALIA & AUSTRALIAN OPTICAL.
Original languageEnglish
Title of host publicationAustralian Control Conference
Pages303-308
Number of pages6
Publication statusPublished - 2011

Publication series

NameAustralian Control Conference

Keywords

  • [Electronic Manuscript]

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    Foo, M., & Weyer, E. (2011). On Reproducing Existing Controllers as Model Predictive Controllers. In Australian Control Conference (pp. 303-308). (Australian Control Conference).