Autors: Mitov, A. S., Slavov, T. N., Kralev, J. K., Angelov, I. I.
Title: Comparison of robust stability for electrohydraulic steering control system based on LQG and H-infinity controller
Keywords: Robust stability, LQG, H-infinity, Electrohydraulic steering system

Abstract: The paper compares the robust stability of two embedded controllers applied in electrohydraulic steering systems-linear-quadratic Gaussian (LQG) controller and H-infinity controller. Both controllers are synthesized on the base of state-space system model obtained with identification. To investigate robust stability of the closed-loop system 30% parametric uncertainty is introduced into B matrix of the model which describes the observed hysteresis of the electrohydraulic actuator. The closed-loop system is represented as M-Δ interconnection which allows calculation of its structured singular value (μ) with both controllers. The H-infinity controller achieves smaller singular value than the LQG controller which asserts that loop stability in presence of bounded variations in the model characteristics is increased in the case of H-infinity controller. The performance of both controllers is experimentally verified on laboratory test bench

References

    Issue

    42nd International Conference on Telecommunications and Signal Processing, 1 July 2019 through 3 July 2019, vol. TSP 2019, issue 42, pp. Pages 712-715, 2019, Hungary, Institute of Electrical and Electronics Engineers Inc., DOI 10.1109/TSP.2019.8769034

    Copyright IEEE

    Цитирания (Citation/s):
    1. Bai, G., Bao, C., Wu, J., Wu, D., Zhang, J., He, X. A Robust Guiding Torque Control Method for Automatic Steering Using LMI Algorithm, IEEE Access, ISSN 2169-3536, vol.8, pp.22162-22169, 2020. - 2020 - в издания, индексирани в Scopus или Web of Science

    Вид: публикация в международен форум, публикация в реферирано издание, индексирана в Scopus и Web of Science