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Proceedings Paper

Fuzzy logic controller for the electric motor driving the astronomical telescope
Author(s): Hussein F. Soliman; Abdel-Fattah A. Attia; Mohammed A. L. Badr; Anas M. Osman; Abdul Allah I. Gamaleldin
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Paper Abstract

The paper presents an application of fuzzy logic controller to regulate the DC motor driver system of astronomical telescope. The mathematical model of such a telescope is highly nonlinear coupled equations. However, the accuracy requirement in telescope system exceed those of other industrial plants. Fuzzy logic controller provides means to deal with nonlinear functions. A fuzzy logic controller (FLC) was designed to enhance the performance of a two-link model of astronomical telescope. The proposed FLC utilizes the position deviation for the desired value, and its rate of change to regulate the armature voltage of the DC motor drive of each link. The final action of FLC is equivalent to PD controller with a variable gain by using an expert look- up table. This work presents the derivation of the mathematical model of 14 inch Celestron telescope and computer simulation of its motion. The FLC contains two groups of fuzzy sets.

Paper Details

Date Published: 26 May 1998
PDF: 10 pages
Proc. SPIE 3351, Telescope Control Systems III, (26 May 1998); doi: 10.1117/12.308827
Show Author Affiliations
Hussein F. Soliman, Ain Shams Univ. (Egypt)
Abdel-Fattah A. Attia, National Research Institute of Astronomy and Geophysics (Egypt)
Mohammed A. L. Badr, Ain Shams Univ. (Egypt)
Anas M. Osman, National Research Institute of Astronomy and Geophysics (Egypt)
Abdul Allah I. Gamaleldin, National Research Institute of Astronomy and Geophysics (Egypt)

Published in SPIE Proceedings Vol. 3351:
Telescope Control Systems III
Hilton Lewis, Editor(s)

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