Fiseha  Bogale, Mustefa  Jibril, Messay  Tadese, 
    Performance Investigation of a Permanent Magnet DC Machines using Robust Control
Technique,
    Journal of Engineering and Applied Sciences,
    Volume 15,Issue 24,
    2020,
    Pages 3783-3787,
    ISSN 1816-949x,
    jeasci.2020.3783.3787,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2020.3783.3787)
    Abstract: In this study, the design and performance
investigation of the permanent magnet machines have
been done to increase the mechanical and electrical
outputs improvement of the systems. A Permanent
Magnet DC Motor (PMDM) and Generator (PMDG) have
been modelled and designed to improve the angular
position and generated current respectively. In this
research, augmentation based H2 optimal and H4
synthesis controllers have been designed as a controller
for the two systems and a comparison between the
proposed controller for tracking a reference inputs and a
promising results have been obtained.
    Keywords: Permanent magnet DC motor;Permanent magnet DC generator;H2 optimal controller;H∞ synthesis controllers