Autors: Rakov, B. Y., Ruzhekov, G. T.
Title: H∞ Multivariable PID Control of a Thermal Plant
Keywords: H∞, fixed structure, multivariable, PID, PLC

Abstract: The current paper investigates the possibility to design a discrete multivariable H∞ PID controller using the MATLAB hinfstruct() function. Two PIDs are designed. They are compared against a full order H∞ controller and a decentralized PID with a static decoupling matrix. Frequency response of the singular values of the closed loop sensitivity functions are calculated and compared. All controllers are tested on a laboratory model, representing a thermal plant. The control algorithms are implemented on a Programmable Logic Controller. The elements of the multivariable PIDs are implemented using velocity form for simpler anti wind-up mechanism realization. The parameters are calculated by MATLAB and then transferred using OPC connection to a SCADA system. Two sets of experiments are conducted with the real system, testing two different sets of reference signal changes. Based on known performance criteria, a comparison is made.

References

    Issue

    2023 International Scientific Conference on Computer Science (COMSCI), 2023, Bulgaria, IEEE, DOI: 10.1109/COMSCI59259.2023.10315891

    Full text of the publication

    Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus