Physical and Virtual Implementation of Closed-loop Designs for Model Updating

Autor: Jensen, Martin Skovmand, Hansen, Tommi Navntoft, Ulriksen, Martin Dalgaard, Bernal, Dionisio
Přispěvatelé: Jamaludin, Zamberi, Ali Mokhtar, Mohd Najib, Wahab, Magd Abdel
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Jensen, M S, Hansen, T N, Ulriksen, M D & Bernal, D 2020, Physical and Virtual Implementation of Closed-loop Designs for Model Updating . in Z Jamaludin, M N Ali Mokhtar & M A Wahab (eds), Proceedings of the 13th International Conference on Damage Assessment of Structures : DAMAS 2019, 9-10 July 2019, Porto, Portugal . Springer, Lecture Notes in Mechanical Engineering, pp. 363-371, 13th International Conference on Damage Assessment of Structures (DAMAS 2019), Porto, Portugal, 09/07/2019 . https://doi.org/10.1007/978-981-13-8331-1_25
DOI: 10.1007/978-981-13-8331-1_25
Popis: A recently proposed virtual implementation of output feedback based on signal processing eliminates the practical overhead associated with physical operation in closed loop. Additionally, the virtual implementation facilitates realization of multiple closed-loop systems from a single test in open loop, allows for complex gains, and removes the constraint of closed-loop stability. Care must, however, be exercised in the design of the closed-loop systems, as the errors in these are governed by the intrinsic approximations in the open-loop identification. The present paper offers an examination of this item when the closed-loop systems are designed for parameter estimation in updating of numerical models of structural systems. The differences between physical realization and the proposed virtual implementation are discussed, and the pivotal points outlined are demonstrated in the context of a numerical examination with a structural system.
Databáze: OpenAIRE