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Proceedings Paper

Telescope control system stability study using a variable structure controller
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Paper Abstract

The performance of on Alt-Az telescope depend strongly on its operating conditions. During tracking Alt-Az telescopes generally move slow but in some cases the dynamic range is large. Anyway the position errors must always be as close as possible to zero. A fixed structure controller cannot optimize the telescope performance in terms of error amount in the whole requested dynamic range. On the contrary a digital controller has the ability to modify its structure and its parameter values during operations, according to the instantaneous error values, system status, system actual sped and system characterization. This paper analyzes the problem of stability using such a variable structure controller in a case study.

Paper Details

Date Published: 26 May 1998
PDF: 11 pages
Proc. SPIE 3351, Telescope Control Systems III, (26 May 1998); doi: 10.1117/12.308804
Show Author Affiliations
Dario Mancini, Astronomical Observatory of Capodimonte (Italy)
Enrico Cascone, Astronomical Observatory of Capodimonte (Italy)
Pietro Schipani, Astronomical Observatory of Capodimonte (Italy)


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

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