Optimal PIP control of a pH neutralization process based on state-dependent parameter model

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dc.contributor.authorOgun, Oluwaseyi A.
dc.contributor.authorFestus, Mbetobong U.
dc.contributor.authorInyang, Isonguyo J.
dc.date.accessioned2018-01-17T16:36:41Z
dc.date.available2018-01-17T16:36:41Z
dc.date.issued2018-01-11
dc.description.abstractIn this paper, an optimal Proportional-Integral-Plus (PIP) controller based on State-Dependent Parameter (SDP) model is developed to control a highly nonlinear and time-varying pH neutralization process. Since the reaction invariants of the pH process are unavailable for direct measurement, a state observer is required for their estimation. Unfortunately, a closed-loop state observer cannot be designed for the pH process due to the decoupled nature of the reaction invariant dynamics. However, this problem is circumvented by engaging the power of State Variable Feedback (SVF) in the context of a Non-Minimum State Space (NMSS) framework. Furthermore, to compensate for process nonlinearities and unmeasured disturbances, an SDP model is identified using data collected from open-loop experiment, and a straightforwardly tuned optimal PIP controller is subsequently designed based on the SDP model to obtain the SDP-PIP controller. For benchmark purposes, a digital PI controller is designed and results are compared with those from the SDP-PIP controller. Simulation results show that SDP-PIP outperforms PI both in set point and disturbance changes.en_UK
dc.identifier.citationOgun OA, Festus MU, Inyang IJ. (2017) Optimal PIP control of a pH neutralization process based on state-dependent parameter model, IFAC-PapersOnLine, Volume 50, Issue 2, December 2017, pp. 37-42en_UK
dc.identifier.urihttps://doi.org/10.1016/j.ifacol.2017.12.007
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/12902
dc.language.isoenen_UK
dc.publisherElsevieren_UK
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.subjectProportional-Integral-Plus (PIP)en_UK
dc.subjectLinear Quadratic (LQ)en_UK
dc.subjectState Variable Feedback (SVF)en_UK
dc.subjectState-Dependent Parameter (SDP)en_UK
dc.subjectpH Neutralizationen_UK
dc.titleOptimal PIP control of a pH neutralization process based on state-dependent parameter modelen_UK
dc.typeArticleen_UK

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