Hierarchical economic NMPC for a class of hybrid systems using neighboring-extremal updates

Inga J. Wolf, Diego Munoz, Moritz Schmitz, Wolfgang Marquardt

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    1 Scopus citations

    Abstract

    A two-layer control algorithm is developed for a class of hybrid (discrete-continuous dynamic) systems comprising important applications such as the economically optimal operation of recipe-driven batch or continuous processes. On the upper layer, the economic optimal control problem is solved rigorously by a slow controller at a low sampling rate, whereas a fast neighboring-extremal controller updates rather than tracks the optimal trajectories to account for disturbances. Consequently, the process is steered to its operational bounds, while the optimal switching times under disturbances can be determined such that the economic potential of the process is fully exploited anytime.

    Original languageEnglish
    Title of host publication8th International Symposium on Advanced Control of Chemical Processes, ADCHEM 2012
    PublisherIFAC Secretariat
    Pages561-566
    Number of pages6
    EditionPART 1
    ISBN (Print)9783902823052
    DOIs
    StatePublished - 2012
    Event8th International Symposium on Advanced Control of Chemical Processes, ADCHEM 2012 - Singapore, Singapore
    Duration: 10 Jul 201213 Jul 2012

    Publication series

    NameIFAC Proceedings Volumes (IFAC-PapersOnline)
    NumberPART 1
    Volume8
    ISSN (Print)1474-6670

    Conference

    Conference8th International Symposium on Advanced Control of Chemical Processes, ADCHEM 2012
    Country/TerritorySingapore
    CitySingapore
    Period10/07/1213/07/12

    Bibliographical note

    Funding Information:
    This research has been partially supported by the German Research Foundation DFG (MA 1188/33-1) and the German Academic Exchange Service DAAD (ALECOL).

    Keywords

    • Dynamic real-time optimization
    • Economic nonlinear model-predicitive control
    • Hierarchical control
    • Hybrid systems
    • Neighboring-extremal control
    • Parametric sensitivity analysis
    • Scheduling

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