dc.contributor.author | Nyawako, D | |
dc.contributor.author | Reynolds, P | |
dc.date.accessioned | 2016-08-09T08:04:47Z | |
dc.date.issued | 2016-08-30 | |
dc.description.abstract | In this paper, three controllers are investigated for active vibration control (AVC) of a pedestrian
walkway structure. They comprise of direct velocity feedback (DVF), observer-based and independent
modal space (IMSC) controllers that are implemented in single-input single-output (SISO), multi-SISO
and multiple-input multiple-output (MIMO) configurations. The objective of the SISO controller
schemes is to compare vibration mitigation performances arising from global control versus selective
control of structural resonant frequencies in a given frequency bandwidth. The objectives set out for
the multi-SISO and MIMO controllers are to realise global control within the same frequency
bandwidth considered in the SISO studies. A novel aspect of these latter studies is the independent
control of selected resonant frequencies at different locations on the structure with the aim of
imposing global control.
Vibration mitigation performances are evaluated using frequency response function measurements
and uncontrolled and controlled responses to a synthesized walking excitation force. In the SISO
studies, selective control of specific resonant frequencies has a slight degradation in the global
vibration mitigation performance although it reflects better performance around the target
frequencies. For the multi-SISO and MIMO controller studies, the selective control of the two lowest
and dominant frequencies of the structure at two different locations still offers comparative vibration
mitigation performances with the controllers considered as global in the sense that they target both
structural frequencies at both locations. Attenuations of between 10-35 dB are achieved. | en_GB |
dc.description.sponsorship | The authors would like to acknowledge the financial assistance provided by the UK Engineering and
Physical Sciences Research Council (EPSRC) through Platform Grant (Ref. EP/G061130/2) and
Leadership Fellowship Grant (Ref. EP/J004081/2). | en_GB |
dc.identifier.citation | Published online before print August 30 2016 | en_GB |
dc.identifier.doi | 10.1177/1077546316667323 | |
dc.identifier.uri | http://hdl.handle.net/10871/22928 | |
dc.language.iso | en | en_GB |
dc.publisher | SAGE Publications (UK and US) | en_GB |
dc.rights.embargoreason | This is the author accepted manuscript. It is currently under an indefinite embargo pending publication by SAGE. | en_GB |
dc.title | Comparative studies of global and targeted control of walkway bridge resonant frequencies | en_GB |
dc.type | Article | en_GB |
dc.identifier.issn | 1077-5463 | |
dc.identifier.eissn | 1741-2986 | |
dc.identifier.journal | Journal of Vibration and Control | en_GB |