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Control System Modeling for the Thirty Meter Telescope Primary MirrorThe Thirty Meter Telescope primary mirror is composed of 492 segments that are controlled to high precision in the presence of wind and vibration disturbances, despite the interaction with structural dynamics. The higher bandwidth and larger number of segments compared with the Keck telescopes requires greater attention to modeling to ensure success. We focus here on the development and validation of a suite of quasi-static and dynamic modeling tools required to support the design process, including robustness verification, performance estimation, and requirements flowdown. Models are used to predict the dynamic response due to wind and vibration disturbances, estimate achievable bandwidth in the presence of control-structure-interaction (CSI) and uncertainty in the interaction matrix, and simulate and analyze control algorithms and strategies, e.g. for control of focus-mode, and sensor calibration. Representative results illustrate TMT performance scaling with parameters, but the emphasis is on the modeling framework itself.
Document ID
20150006574
Acquisition Source
Jet Propulsion Laboratory
Document Type
Conference Paper
External Source(s)
Authors
MacMynowski, Douglas G.
(California Inst. of Tech. Pasadena, CA, United States)
Thompson, Peter M.
(Systems Technology, Inc. Hawthorne, CA, United States)
Shelton, J. Chris
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Roberts, Lewis C., Jr.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Colavita, M. Mark
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Sirota, Mark J.
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Date Acquired
April 23, 2015
Publication Date
August 15, 2011
Subject Category
Astronomy
Cybernetics, Artificial Intelligence And Robotics
Meeting Information
Meeting: Integrated Modeling of Complex Optomechanical Systems
Location: Kiruna
Country: Sweden
Start Date: August 15, 2011
End Date: August 17, 2011
Sponsors: Lund Observatory, International Society for Optical Engineering, Lulea Univ. of Technology
Distribution Limits
Public
Copyright
Other
Keywords
uncetainty
dynamics
Extremely Large Telescopes
Control Systems

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