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[期刊论文]

Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective

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author:

Chen, Z. H. (Chen, Z. H..) [1] | Ni, Y. Q. (Ni, Y. Q..) [2]

Indexed by:

EI Scopus SCIE

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.

Community:

  • [ 1 ] [Chen, Z. H.]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Fujian, Peoples R China
  • [ 2 ] [Ni, Y. Q.]Hong Kong Polytech Univ, Dept Civil & Environm Engn, Kowloon, Hong Kong, Peoples R China

Reprint 's Address:

  • 陈忠辉

    [Chen, Z. H.]Fuzhou Univ, Coll Civil Engn, Fuzhou 350116, Fujian, Peoples R China

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Source :

SHOCK AND VIBRATION

ISSN: 1070-9622

Year: 2017

Volume: 2017

1 . 8 5 7

JCR@2017

1 . 2 0 0

JCR@2023

ESI Discipline: ENGINEERING;

ESI HC Threshold:177

JCR Journal Grade:2

CAS Journal Grade:4

Cited Count:

WoS CC Cited Count:

30 Days PV: 0

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