Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/76509
Title: Adaptive semiactive cable vibration control : a frequency domain perspective
Authors: Chen, ZH
Ni, YQ 
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
Appears in Collections:Journal/Magazine Article

Access
View full-text via PolyU eLinks SFX Query
Show full item record

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.