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dc.contributor.authorNyawako, D
dc.contributor.authorReynolds, P
dc.contributor.authorHudson, E
dc.date.accessioned2017-01-18T16:36:58Z
dc.date.issued2016-01-01
dc.description.abstractFeedback control strategies are desirable for disturbance rejection of human-induced vibrations in civil engineering structures as human walking forces cannot easily be measured. In relation to human-induced vibration control studies, most past researches have focused on floors and footbridges and the widely used linear controller implemented in the trials has been the direct velocity feedback (DVF) scheme. With appropriate compensation to enhance its robustness, it has been shown to be effective at damping out the problematic modes of vibration of the structures in which the active vibration control systems have been implemented. The work presented here introduces a disturbance observer (DOB) that is used with an outer-loop DVF controller. Results of analytical studies presented in this work based on the dynamic properties of a walkway bridge structure demonstrate the potential of this approach for enhancing the vibration mitigation performance offered by a purely DVF controller. For example, estimates of controlled frequency response functions indicate improved attenuation of vibration around the dominant frequency of the walkway bridge structure as well as at higher resonant frequencies. Controlled responses from three synthesized walking excitation forces on a walkway bridge structure model show that the inclusion of the disturbance observer with an outer loop DVF has potential to improve on the vibration mitigation performance by about 3.5% at resonance and 6-10% off-resonance. These are realised with hard constraints being imposed on the low frequency actuator displacements.en_GB
dc.identifier.citationProc. SPIE 9799, Active and Passive Smart Structures and Integrated Systems 2016, 97991W (April 15, 2016); doi:10.1117/12.2219383en_GB
dc.identifier.doi10.1117/12.2219383
dc.identifier.urihttp://hdl.handle.net/10871/25263
dc.language.isoenen_GB
dc.publisherSociety of Photo-optical Instrumentation Engineers (SPIE)en_GB
dc.rightsCopyright 2016 Society of Photo Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic electronic or print reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.2219383en_GB
dc.titleIncorporating a disturbance observer with direct velocity feedback for control of human-induced vibrationsen_GB
dc.typeConference proceedingsen_GB
dc.date.available2017-01-18T16:36:58Z
dc.identifier.isbn9781510600409
dc.identifier.issn0277-786X
dc.descriptionThis is the final version of the article. Available from the publisher via the DOI in this record.en_GB
dc.identifier.journalProceedings of SPIE - The International Society for Optical Engineeringen_GB


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