Mustefa  Jibril, Messay  Tadese, Eliyas  Alemayehu Tadese, 
    Performance Investigation of AC Servomotor Position Control using Fuzzy Logic and
Observer Based Controllers,
    International Journal of Electrical and Power Engineering,
    Volume 14,Issue 4,
    2020,
    Pages 40-45,
    ISSN 1990-7958,
    ijepe.2020.40.45,
    (https://makhillpublications.co/view-article.php?doi=ijepe.2020.40.45)
    Abstract: An AC servomotor which is mostly a
two-phase induction motor with two stator field coils
placed 90 electrical degrees apart used for controlling
position, speed and acceleration in manufacturing
industries. In this study, a two-phase induction motor has
been designed with a fuzzy logic and observer based
controllers to improve the performance of the system.
Comparison of the AC servomotor with the proposed
controllers for tracking a step and a square desired
position signal input has been done using
MATLAB/Simulink toolbox and a promising result
obtained.
    Keywords: AC servomotor;induction motor;fuzzy logic;observer based controllers