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|Title:||Adaptive semiactive cable vibration control : a frequency domain perspective||Authors:||Chen, ZH
|Issue Date:||2017||Publisher:||Hindawi Publishing Corporation||Source:||Shock and vibration, 2017, 2593503 How to cite?||Journal:||Shock and vibration||Abstract:||An adaptive solution to semiactive control of cable vibration is formulated by extending the linear quadratic Gaussian (LQG) control from time domain to frequency domain. Frequency shaping is introduced via the frequency dependent weights in the cost function to address the control effectiveness and robustness. The Hilbert-Huang transform(HHT) technique is further synthesized for online tuning of the controller gain adaptively to track the cable vibration evolution, which also obviates the iterative optimal gain selection for the trade-off between control performance and energy in the conventional time domain LQG (T-LQG) control. The developed adaptive frequency-shaped LQG (AF-LQG) control is realized by collocated self-sensing magnetorheological (MR) dampers considering the nonlinear damper dynamics for force tracking control. Performance of the AF-LQG control is numerically validated on a bridge cable transversely attached with a self-sensing MR damper. The results demonstrate the adaptivity in gain tuning of the AF-LQG control to target for the dominant cable mode for vibration energy dissipation, as well as its enhanced control efficacy over the optimal passive MR damping control and the T-LQG control for different excitation modes and damper locations.||URI:||http://hdl.handle.net/10397/76509||ISSN:||1070-9622||EISSN:||1875-9203||DOI:||10.1155/2017/2593503||Rights:||Copyright © 2017 Z. H. Chen and Y. Q. Ni. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The following article: Z. H. Chen and Y. Q. Ni, “Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective,” Shock and Vibration, vol. 2017, Article ID 2593503, 12 pages, 2017 is available at https://doi.org/10.1155/2017/2593503.
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