Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System
Active control devices, such as active mass dampers, are mainly employed for the reduction of wind-induced vibrations in high-rise buildings, with the final aim of satisfying vibration serviceability limit state requirements and of meeting appropriate comfort criteria. When such active devices, norm...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2014/745814 |
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| author | Ilaria Venanzi Filippo Ubertini |
| author_facet | Ilaria Venanzi Filippo Ubertini |
| author_sort | Ilaria Venanzi |
| collection | DOAJ |
| description | Active control devices, such as active mass dampers, are mainly employed for the reduction of wind-induced vibrations in high-rise buildings, with the final aim of satisfying vibration serviceability limit state requirements and of meeting appropriate comfort criteria. When such active devices, normally operating under wind loads associated with short return periods, are subjected to seismic events, they can experience large amplitude vibrations and exceed stroke limits. This may lead to a reduced performance of the control system that can even worsen the performance of the whole structure. In this paper, a nonlinear control strategy based on a modified direct velocity feedback algorithm is proposed for handling stroke limits of an active mass driver (AMD) system. In particular, a suitable nonlinear braking term proportional to the relative AMD velocity is included in the control law in order to slowdown the device in the proximity of the stroke limits. Experimental and numerical free vibration tests are carried out on a scaled-down five-story frame structure equipped with an AMD to demonstrate the effectiveness of the proposed control strategy. |
| format | Article |
| id | doaj-art-892b93bcfc574e5d8a8595fd7625989c |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-892b93bcfc574e5d8a8595fd7625989c2025-02-03T01:07:32ZengWileyAdvances in Civil Engineering1687-80861687-80942014-01-01201410.1155/2014/745814745814Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver SystemIlaria Venanzi0Filippo Ubertini1Department of Civil and Environmental Engineering, University of Perugia, Via G. Duranti 93, 06025 Perugia, ItalyDepartment of Civil and Environmental Engineering, University of Perugia, Via G. Duranti 93, 06025 Perugia, ItalyActive control devices, such as active mass dampers, are mainly employed for the reduction of wind-induced vibrations in high-rise buildings, with the final aim of satisfying vibration serviceability limit state requirements and of meeting appropriate comfort criteria. When such active devices, normally operating under wind loads associated with short return periods, are subjected to seismic events, they can experience large amplitude vibrations and exceed stroke limits. This may lead to a reduced performance of the control system that can even worsen the performance of the whole structure. In this paper, a nonlinear control strategy based on a modified direct velocity feedback algorithm is proposed for handling stroke limits of an active mass driver (AMD) system. In particular, a suitable nonlinear braking term proportional to the relative AMD velocity is included in the control law in order to slowdown the device in the proximity of the stroke limits. Experimental and numerical free vibration tests are carried out on a scaled-down five-story frame structure equipped with an AMD to demonstrate the effectiveness of the proposed control strategy.http://dx.doi.org/10.1155/2014/745814 |
| spellingShingle | Ilaria Venanzi Filippo Ubertini Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System Advances in Civil Engineering |
| title | Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System |
| title_full | Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System |
| title_fullStr | Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System |
| title_full_unstemmed | Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System |
| title_short | Free Vibration Response of a Frame Structural Model Controlled by a Nonlinear Active Mass Driver System |
| title_sort | free vibration response of a frame structural model controlled by a nonlinear active mass driver system |
| url | http://dx.doi.org/10.1155/2014/745814 |
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