In this work, we consider the problem of controlling a two-stage cooling mixed suspension mixed product removal (MSMPR) crystallizer. For this process, the temperature in the first crystallizer is manipulated for controlling the average crystal dimension (d 43 ), while it is desired to maintain the temperature of the second crystallizer at the minimum allowed value to guarantee maximum yield. Due to system nonlinearities and process delays, the performance of traditional PID controllers are poor. A control scheme is proposed to improve the closed loop performance and achieve desired control objectives. The control scheme is based on the coupling of a PI controller and a model-based nonlinear prediction block that serves as delay and disturbance compensator. The proposed scheme has been tested on the system in case of disturbances in the feed concentration, with and without measurement errors. It is observed that the proposed scheme outperforms the PI controller by reducing the output response settling time and overshoot.


    Access

    Download


    Export, share and cite



    Title :

    Control of a two-stage mixed suspension mixed product removal crystallizer ⁎


    Contributors:
    Porru, M. (author) / Ozkan, L. (author)

    Publication date :

    2018-07-01


    Remarks:

    Porru , M & Ozkan , L 2018 , ' Control of a two-stage mixed suspension mixed product removal crystallizer ⁎ ' , IFAC-PapersOnLine , vol. 51 , no. 18 , pp. 898-903 . https://doi.org/10.1016/j.ifacol.2018.09.231



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    629



    Reciprocating Crystallizer

    Lal, R. B. / Aggarwal, M. | NTRS | 1985


    Mixed suspension slag tank truck

    LIU JIYING / CHEN YONGCHANG | European Patent Office | 2015

    Free access

    A MECHANICAL-PNEUMATIC MIXED SUSPENSION

    ANTONIO MACEIRAS | European Patent Office | 2020

    Free access

    Mixed H2/h-infinity control for electromagnetic active suspension

    Cao,J. / Fan,Y. / Zhang,Y. et al. | Automotive engineering | 2014