Fuzzy logic controller for the electric motor driving the astronomical telescope

Hussein F. Soliman; Abdel-Fattah A. Attia; Mohammed A. L. Badr; Anas M. Osman; Abdul Allah I. Gamaleldin

doi:10.1117/12.308827

26 May 1998 Fuzzy logic controller for the electric motor driving the astronomical telescope

Hussein F. Soliman, Abdel-Fattah A. Attia, Mohammed A. L. Badr, Anas M. Osman, Abdul Allah I. Gamaleldin

Proceedings Volume 3351, Telescope Control Systems III; (1998) https://doi.org/10.1117/12.308827
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

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.

Citation Download Citation

Hussein F. Soliman, Abdel-Fattah A. Attia, Mohammed A. L. Badr, Anas M. Osman, and Abdul Allah I. Gamaleldin "Fuzzy logic controller for the electric motor driving the astronomical telescope", Proc. SPIE 3351, Telescope Control Systems III, (26 May 1998); https://doi.org/10.1117/12.308827

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