Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors
The trade-off between the design phase and the experimental setup is crucial in satisfying the accuracy requirements of large deployable reflectors. Manufacturing errors and tolerances change the root mean square (RMS) of the reflecting surface and require careful calibration of the tie-rod system t...
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2019-04-01
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Online Access: | https://www.mdpi.com/2075-1702/7/2/23 |
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doaj-6301e6686c1343668362da229d6651e92020-11-25T02:18:26ZengMDPI AGMachines2075-17022019-04-01722310.3390/machines7020023machines7020023Tie-System Calibration for the Experimental Setup of Large Deployable ReflectorsAlessandro Cammarata0Rosario Sinatra1Riccardo Rigato2Pietro Davide Maddio3University of Catania, DICAR, Via S. Sofia 64, 95123 Catania, ItalyUniversity of Catania, DICAR, Via S. Sofia 64, 95123 Catania, ItalyThales Alenia Space Italia, Via Saccomuro 24, 00131 Roma, ItalyUniversity of Catania, DICAR, Via S. Sofia 64, 95123 Catania, ItalyThe trade-off between the design phase and the experimental setup is crucial in satisfying the accuracy requirements of large deployable reflectors. Manufacturing errors and tolerances change the root mean square (RMS) of the reflecting surface and require careful calibration of the tie-rod system to be able to fit into the initial design specifications. To give a possible solution to this problem, two calibration methods—for rigid and flexible ring truss supports, respectively—are described in this study. Starting from the acquired experimental data on the net nodal co-ordinates, the initial problem of satisfying the static equilibrium with the measured configuration is described. Then, two constrained optimization problems (for rigid or flexible ring truss supports) are defined to meet the desired RMS accuracy of the reflecting surface by modifying the tie lengths. Finally, a case study to demonstrate the validity of the proposed methods is presented.https://www.mdpi.com/2075-1702/7/2/23large deployable reflectortie adjustmentexperimental setup |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Alessandro Cammarata Rosario Sinatra Riccardo Rigato Pietro Davide Maddio |
spellingShingle |
Alessandro Cammarata Rosario Sinatra Riccardo Rigato Pietro Davide Maddio Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors Machines large deployable reflector tie adjustment experimental setup |
author_facet |
Alessandro Cammarata Rosario Sinatra Riccardo Rigato Pietro Davide Maddio |
author_sort |
Alessandro Cammarata |
title |
Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors |
title_short |
Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors |
title_full |
Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors |
title_fullStr |
Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors |
title_full_unstemmed |
Tie-System Calibration for the Experimental Setup of Large Deployable Reflectors |
title_sort |
tie-system calibration for the experimental setup of large deployable reflectors |
publisher |
MDPI AG |
series |
Machines |
issn |
2075-1702 |
publishDate |
2019-04-01 |
description |
The trade-off between the design phase and the experimental setup is crucial in satisfying the accuracy requirements of large deployable reflectors. Manufacturing errors and tolerances change the root mean square (RMS) of the reflecting surface and require careful calibration of the tie-rod system to be able to fit into the initial design specifications. To give a possible solution to this problem, two calibration methods—for rigid and flexible ring truss supports, respectively—are described in this study. Starting from the acquired experimental data on the net nodal co-ordinates, the initial problem of satisfying the static equilibrium with the measured configuration is described. Then, two constrained optimization problems (for rigid or flexible ring truss supports) are defined to meet the desired RMS accuracy of the reflecting surface by modifying the tie lengths. Finally, a case study to demonstrate the validity of the proposed methods is presented. |
topic |
large deployable reflector tie adjustment experimental setup |
url |
https://www.mdpi.com/2075-1702/7/2/23 |
work_keys_str_mv |
AT alessandrocammarata tiesystemcalibrationfortheexperimentalsetupoflargedeployablereflectors AT rosariosinatra tiesystemcalibrationfortheexperimentalsetupoflargedeployablereflectors AT riccardorigato tiesystemcalibrationfortheexperimentalsetupoflargedeployablereflectors AT pietrodavidemaddio tiesystemcalibrationfortheexperimentalsetupoflargedeployablereflectors |
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1724882213145673728 |