Optical telescope drive system modeling

Dario Mancini; Enrico Cascone

doi:10.1117/12.211439

8 June 1995 Optical telescope drive system modeling

Dario Mancini, Enrico Cascone

Proceedings Volume 2479, Telescope Control Systems; (1995) https://doi.org/10.1117/12.211439
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

Very precise models are required to simulate drive system performance in terms of tracking accuracy. In any case it becomes very hard to identify the correct system transfer function because of the near zero speed nonlinear characteristics of several system subsections. On the other hand, very precise models are unnecessary because of the relative implication with the mechanical structure performance often represented by simplified models due to the complexity of the mechanical structure itself. For these reasons a simplified drive system model can be sufficient to define the macro capabilities of the same system (i.e., required torque, ripple, encoder resolution) while system tracking accuracy can be foreseen by means of a detailed study of any subsystem performance. On the other hand, a model identification can be performed when a precise simulation of the system behavior is necessary but it is possible only if the system has been already done. As a matter of fact a system model is not only necessary to study and to forecast the system performance but it is also necessary to allow a very precise simulation of system capabilities necessary for future improvements. The present paper describes an approach that allows us to identify a real and reliable model of the system starting from the same system real behaviors.

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Dario Mancini and Enrico Cascone "Optical telescope drive system modeling", Proc. SPIE 2479, Telescope Control Systems, (8 June 1995); https://doi.org/10.1117/12.211439

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KEYWORDS

Data modeling

Performance modeling

Systems modeling

Device simulation

Telescopes

Finite element methods

Optical telescopes

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