TY - GEN
T1 - Physical and Virtual Implementation of Closed-loop Designs for Model Updating
AU - Jensen, Martin Skovmand
AU - Hansen, Tommi Navntoft
AU - Ulriksen, Martin Dalgaard
AU - Bernal, Dionisio
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Closed-loop eigenstructure
KW - Model updating
KW - Output feedback
KW - Parameter estimation
KW - Virtual implementation
UR - http://www.scopus.com/inward/record.url?scp=85069175539&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-8331-1_25
DO - 10.1007/978-981-13-8331-1_25
M3 - Article in proceeding
SN - 978-981-13-8330-4
T3 - Lecture Notes in Mechanical Engineering
SP - 363
EP - 371
BT - Proceedings of the 13th International Conference on Damage Assessment of Structures
A2 - Jamaludin, Zamberi
A2 - Ali Mokhtar, Mohd Najib
A2 - Wahab, Magd Abdel
PB - Springer
T2 - 13th International Conference on Damage Assessment of Structures (DAMAS 2019)
Y2 - 9 July 2019 through 10 July 2019
ER -