Mustefa  Jibril, Messay  Tadese, Eliyas Alemayehu  Tadese, 
    Speed Control of Ward Leonard Layout System using H∞ Optimal Control,
    International Journal of System Signal Control and Engineering Application,
    Volume 14,Issue 1,
    2021,
    Pages 26-29,
    ISSN 1997-5422,
    ijssceapp.2021.26.29,
    (https://makhillpublications.co/view-article.php?doi=ijssceapp.2021.26.29)
    Abstract: In this study, modelling designing and
simulation of a Ward Leonard layout system is done using
robust control theory. In order to increase the performance
of the Ward Leonard layout system with H∞ optimal
control synthesis and H∞ optimal control synthesis via.
γ-iteration controllers are used. The open loop response of
the Ward Leonard layout system shows that the system
needs to be improved. Comparison of the Ward Leonard
layout system with H∞ optimal control synthesis and H∞
optimal control synthesis via. γ-iteration controllers to
track a desired step speed input have been done. Finally,
the comparative simulation results prove the effectiveness
of the proposed Ward Leonard layout system with H∞
optimal control synthesis controller in improving the
percentage overshoot and the settling time.
    Keywords: Ward Leonard layout;H∞ optimal control synthesis controller;H∞ optimal control synthesis via.γ-iteration controller