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

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dc.contributor.author Ogun, Oluwaseyi A.
dc.contributor.author Festus, Mbetobong U.
dc.contributor.author Inyang, Isonguyo J.
dc.date.accessioned 2018-01-17T16:36:41Z
dc.date.available 2018-01-17T16:36:41Z
dc.date.issued 2018-01-11
dc.identifier.citation Ogun 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. 37-42 en_UK
dc.identifier.uri https://doi.org/10.1016/j.ifacol.2017.12.007
dc.identifier.uri https://dspace.lib.cranfield.ac.uk/handle/1826/12902
dc.description.abstract In 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.language.iso en en_UK
dc.publisher Elsevier en_UK
dc.rights Attribution-NonCommercial-NoDerivatives 4.0 International *
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ *
dc.subject Proportional-Integral-Plus (PIP) en_UK
dc.subject Linear Quadratic (LQ) en_UK
dc.subject State Variable Feedback (SVF) en_UK
dc.subject State-Dependent Parameter (SDP) en_UK
dc.subject pH Neutralization en_UK
dc.title Optimal PIP control of a pH neutralization process based on state-dependent parameter model en_UK
dc.type Article en_UK

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