Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective
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...
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| Format: | Article |
| Language: | English |
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Wiley
2017-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2017/2593503 |
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| author | Z. H. Chen Y. Q. Ni |
| author_facet | Z. H. Chen Y. Q. Ni |
| author_sort | Z. H. Chen |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-c869af2c35ec4f9888b9fdfba1c8eca2 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-c869af2c35ec4f9888b9fdfba1c8eca22025-02-03T07:23:48ZengWileyShock and Vibration1070-96221875-92032017-01-01201710.1155/2017/25935032593503Adaptive Semiactive Cable Vibration Control: A Frequency Domain PerspectiveZ. H. Chen0Y. Q. Ni1College of Civil Engineering, Fuzhou University, Fuzhou 350116, ChinaDepartment of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong KongAn 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.http://dx.doi.org/10.1155/2017/2593503 |
| spellingShingle | Z. H. Chen Y. Q. Ni Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective Shock and Vibration |
| title | Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective |
| title_full | Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective |
| title_fullStr | Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective |
| title_full_unstemmed | Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective |
| title_short | Adaptive Semiactive Cable Vibration Control: A Frequency Domain Perspective |
| title_sort | adaptive semiactive cable vibration control a frequency domain perspective |
| url | http://dx.doi.org/10.1155/2017/2593503 |
| work_keys_str_mv | AT zhchen adaptivesemiactivecablevibrationcontrolafrequencydomainperspective AT yqni adaptivesemiactivecablevibrationcontrolafrequencydomainperspective |