- Conference Paper
For a material efficient construction process of lightweight concrete shells, tensioned cablenets can be used as a supporting formwork. In order to guarantee the mechanical stability of the shells,tight tolerances in their form need to be met. To this end, methods have recently been proposed to readjustthe form of the cable net on the construction site. This paperproposes a novel view on the cable netmodel as a dynamical system and derives robust control approaches based onH∞andμsynthesis. Bothapproaches can account for input uncertainties and external disturbances. Theμcontroller additionallyis robust against the uncertain model parameters, which makes their precise identification unnecessary.Theμsynthesis also provides a priori bounds on the allowable fabrication tolerances of the cable net inorder to guarantee robust performance of the closed-loop system. The resulting LTI controllers can beapplied to the system without expert knowledge about the system model or the underlying optimization.The effectiveness of the controllers is demonstrated in numerical experiments. Show more
Book title21th IFAC World Congress. Proceedings
Journal / seriesIFAC-PapersOnLine
Pages / Article No.
SubjectRobust Control; Model Uncertainty; μ-Synthesis; Digital Fabrication; Lightweight Structures
Organisational unit08814 - Smith, Roy (Tit.-Prof.)
178890 - Modeling, Identification and Control of Periodic Systems in Energy Applications (SNF)
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Is supplemented by: https://doi.org/10.3929/ethz-b-000475974
NotesDue to the Coronavirus (COVID-19) the 21st IFAC World Congress 2020 became the 1st Virtual IFAC World Congress (IFAC-V 2020).
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