Abstract
A recently proposed virtual implementation of output feed-back 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.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Aster, R.C., Borchers, B., Thurber, C.H.: Parameter Estimation and Inverse Problems, 2nd edn. Academic Press, Cambridge (2013)
Friswell, M.I., Mottershead, J.E.: Finite Element Model Updating in Structural Dynamics. Kluwer Academic Publishers, Dordrecht (1995)
Koh, B.H., Ray, L.R.: Feedback controller design for sensitivity-based damage localization. J. Sound Vib. 273(1), 317–335 (2004)
Jiang, L.J., Tang, J.J., Wang, K.W.: An optimal sensitivity-enhancing feedback control approach via eigenstructure assignment for structural damage identification. J. Vib. Acoust. 129(6), 771–783 (2007)
Nalitolela, N.G., Penny, J.E.T., Friswell, M.I.: A mass or stiffness addition technique for structural parameter updating. Int. J. Anal. Exp. Modal Anal. 7(3), 157–168 (1992)
Cha, P., Gu, W.: Model updating using an incomplete set of experimental modes. J. Sound Vib. 233(4), 583–596 (2000)
Bernal, D., Ulriksen, M.D.: Output feedback in the design of eigenstructures for enhanced sensitivity. Mech. Syst. Signal Process. 112, 22–30 (2018)
Bernal, D.: Parameter estimation using virtual output feedback. Mechanical Systems and Signal Processing (to appear)
Bernal, D.: Parameter estimation using virtual dynamic output feedback. Mechanical Systems and Signal Processing (to appear)
Bernal, D., Ulriksen, M.D.: Virtual closed-loop parameter estimation. In: Proceedings of the International Conference on Structural Engineering Dynamics (ICEDyn), Viana do Castelo, Portugal (2019)
Ulriksen, M.D., Bernal, D.: On the use of complex gains in virtual feedback for model updating. In: Proceedings of the International Conference on Structural Engineering Dynamics (ICEDyn), Viana do Castelo, Portugal (2019)
Hansen, T.N., Jensen, M.S., Ulriksen, M.D., Bernal, D.: On the model order in parameter estimation using virtual compensators. In: Proceedings of the 13th International Conference on Damage Assessment of Structures (DAMAS 2019), Porto, Portugal (2009)
Trentelman, H., Stoorvogel, A.A., Hautus, M.: Control Theory for Linear Systems. Springer, Heidelberg (2001)
Ulriksen, M.D., Bernal, D.: On gain design in virtual output feedback for model updating. In: Proceedings of the 13th International Conference on Damage Assessment of Structures (DAMAS 2019), Porto, Portugal (2019)
Juang, J.N.: Applied System Identification. Prentice Hall, Upper Saddle River (1994)
Acknowledgement
The authors gratefully acknowledge the Danish Hydrocarbon Research and Technology Centre (DHRTC) for the financial support.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2020 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Jensen, M.S., Hansen, T.N., Ulriksen, M.D., Bernal, D. (2020). Physical and Virtual Implementation of Closed-Loop Designs for Model Updating. In: Wahab, M. (eds) Proceedings of the 13th International Conference on Damage Assessment of Structures. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-13-8331-1_25
Download citation
DOI: https://doi.org/10.1007/978-981-13-8331-1_25
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-8330-4
Online ISBN: 978-981-13-8331-1
eBook Packages: EngineeringEngineering (R0)