Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes
Structural vibrations have adverse effects and can lead to catastrophic failures. Among various methods for mitigation of vibrations, the semi-active control approaches have the advantage of not requiring a large external power supply. In this paper, we propose and test a sliding mode control method...
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| Format: | Article |
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MDPI AG
2023-01-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/13/2/348 |
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| author | Mariusz Ostrowski Aleksandra Jedlińska Błażej Popławski Bartlomiej Blachowski Grzegorz Mikułowski Dominik Pisarski Łukasz Jankowski |
| author_facet | Mariusz Ostrowski Aleksandra Jedlińska Błażej Popławski Bartlomiej Blachowski Grzegorz Mikułowski Dominik Pisarski Łukasz Jankowski |
| author_sort | Mariusz Ostrowski |
| collection | DOAJ |
| description | Structural vibrations have adverse effects and can lead to catastrophic failures. Among various methods for mitigation of vibrations, the semi-active control approaches have the advantage of not requiring a large external power supply. In this paper, we propose and test a sliding mode control method for the semi-active mitigation of vibrations in frame structures. The control forces are generated in a purely dissipative manner by means of on/off type actuators that take the form of controllable structural nodes. These nodes are essentially lockable hinges, modeled as viscous dampers, which are capable of the on/off control of the transmission of bending moments between the adjacent beams. The control aim is formulated in terms of the displacement of a selected degree of freedom. A numerically effective model of such a node is developed, and the proposed control method is verified in a numerical experiment of a four-story shear structure subjected to repeated random seismic excitations. In terms of the root-mean-square displacement, the control reduced the response by 48.4–78.4% on average, depending on the number and placement of the applied actuators. The peak mean amplitude at the first mode of natural vibrations was reduced by as much as 70.6–96.5%. Such efficiency levels confirm that the proposed control method can effectively mitigate vibrations in frame structures. |
| first_indexed | 2024-03-11T09:04:26Z |
| format | Article |
| id | doaj.art-cb7c0e0df52d49ce987de7c25582db59 |
| institution | Directory Open Access Journal |
| issn | 2075-5309 |
| language | English |
| last_indexed | 2024-03-11T09:04:26Z |
| publishDate | 2023-01-01 |
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| record_format | Article |
| series | Buildings |
| spelling | doaj.art-cb7c0e0df52d49ce987de7c25582db592023-11-16T19:31:20ZengMDPI AGBuildings2075-53092023-01-0113234810.3390/buildings13020348Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural NodesMariusz Ostrowski0Aleksandra Jedlińska1Błażej Popławski2Bartlomiej Blachowski3Grzegorz Mikułowski4Dominik Pisarski5Łukasz Jankowski6Institute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandInstitute of Fundamental Technological Research, Polish Academy of Sciences, 02-106 Warsaw, PolandStructural vibrations have adverse effects and can lead to catastrophic failures. Among various methods for mitigation of vibrations, the semi-active control approaches have the advantage of not requiring a large external power supply. In this paper, we propose and test a sliding mode control method for the semi-active mitigation of vibrations in frame structures. The control forces are generated in a purely dissipative manner by means of on/off type actuators that take the form of controllable structural nodes. These nodes are essentially lockable hinges, modeled as viscous dampers, which are capable of the on/off control of the transmission of bending moments between the adjacent beams. The control aim is formulated in terms of the displacement of a selected degree of freedom. A numerically effective model of such a node is developed, and the proposed control method is verified in a numerical experiment of a four-story shear structure subjected to repeated random seismic excitations. In terms of the root-mean-square displacement, the control reduced the response by 48.4–78.4% on average, depending on the number and placement of the applied actuators. The peak mean amplitude at the first mode of natural vibrations was reduced by as much as 70.6–96.5%. Such efficiency levels confirm that the proposed control method can effectively mitigate vibrations in frame structures.https://www.mdpi.com/2075-5309/13/2/348semi-active controlsliding mode controlstructural controlcontrollable nodeson/off nodesdamping of vibrations |
| spellingShingle | Mariusz Ostrowski Aleksandra Jedlińska Błażej Popławski Bartlomiej Blachowski Grzegorz Mikułowski Dominik Pisarski Łukasz Jankowski Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes Buildings semi-active control sliding mode control structural control controllable nodes on/off nodes damping of vibrations |
| title | Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes |
| title_full | Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes |
| title_fullStr | Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes |
| title_full_unstemmed | Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes |
| title_short | Sliding Mode Control for Semi-Active Damping of Vibrations Using on/off Viscous Structural Nodes |
| title_sort | sliding mode control for semi active damping of vibrations using on off viscous structural nodes |
| topic | semi-active control sliding mode control structural control controllable nodes on/off nodes damping of vibrations |
| url | https://www.mdpi.com/2075-5309/13/2/348 |
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