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Two Methods for the Identification of Uncertain Parameters of an Architectural Cable Net Geometry

Author(s):

Y. R. Stürz, M. Morari, R. S. Smith
Conference/Journal:

IEEE Multi-Conference on Systems and Control, Buenos Aires, Argentina, pp. 804 - 809
Abstract:

Recently, a control algorithm has been presented to control the geometry of a prestressed flexible cable net formwork, which is used for the construction of anticlastic thin concrete shell structures in architecture. The most important uncertainties in the model of the cable net are the parameters of unstressed lengths of its edges. As the control algorithm is model-based, its performance depends on the knowledge of these parameters. We present two methods for their identifica- tion, which are based on measurements of different configura- tions of the tensioned cable net. The first identification method uses a change of variables and a linear least squares approach. The second one is based on an optimization problem, which is solved in a distributed way by the Alternating Direction Method of Multipliers (ADMM) and is robust against the expected measurement noise. A numerical example demonstrates the performance of the identification methods.

Year:

2016
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@InProceedings { St_Mor:2016:IFA_5474,
    author={Y. R. St{\"u}rz and M. Morari and R. S. Smith},
    title={{Two Methods for the Identification of Uncertain Parameters
	  of an Architectural Cable Net Geometry}},
    booktitle={IEEE Multi-Conference on Systems and Control},
    pages={804 -- 809},
    year={2016},
    address={Buenos Aires, Argentina},
    month=sep,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=5474}
}
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