A Segmented Active Mirror For Solar Observations

Robert C. Smithson

doi:10.1117/12.940475

6 October 1987 A Segmented Active Mirror For Solar Observations

Robert C. Smithson

Proceedings Volume 0779, Electromechanical System Interaction with Optical Design; (1987) https://doi.org/10.1117/12.940475
Event: 1987 Technical Symposium Southeast on Optics, Electro-Optics, and Sensors, 1987, Orlando, FL, United States

Abstract

Active mirror systems present one of the most complex control problems encountered in electro-optical systems. Such mirrors not only require the usual attention to servo control performance, but also involve the simultaneous control of many parallel channels which may interact with each other. Moreover, the data rates involved are such that conventional digital processora are overwhelmed, and special purpose hardwired analog or digital control systems are required. Present mirrors have from a few dozen to a few hundred control channels. Future mirrors may have tens of thousands. The purpose of this paper is to describe our experience with a 57-channel active mirror system developed to remove atmospheric aberrations in solar images. I will describe a new control method which greatly increases con-trol system reliability under daytime atmospheric conditions.

Citation Download Citation

Robert C. Smithson "A Segmented Active Mirror For Solar Observations", Proc. SPIE 0779, Electromechanical System Interaction with Optical Design, (6 October 1987); https://doi.org/10.1117/12.940475

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