Telescope control system stability study using a variable structure controller

Details Telescope control system stability study using a variable structure controller Telescope control system stability study using a variable structure controller

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998spie.3351..331m&link_type=abstract

Proc. SPIE Vol. 3351, p. 331-341, Telescope Control Systems III, Hilton Lewis; Ed.

Computer Science

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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.

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