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https://hdl.handle.net/2440/126175
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dc.contributor.author | Tang, D. | - |
dc.contributor.author | Chen, L. | - |
dc.contributor.author | Tian, Z. | - |
dc.contributor.author | Hu, E. | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Journal of Sound and Vibration, 2020; 468:115061-1-115061-16 | - |
dc.identifier.issn | 0022-460X | - |
dc.identifier.issn | 1095-8568 | - |
dc.identifier.uri | http://hdl.handle.net/2440/126175 | - |
dc.description | Available online 9 November 2019 | - |
dc.description.abstract | In this research a two-degrees-of-freedom(2-DOF) virtual stiffness-damping system (VSDS) is developed to facilitate industrial and laboratory testing of airfoil aeroelasticity instability. Other existing test-beds in this field rely on elastic elements or structures to set airfoil elasticity in tests, which can be costly and inconvenient in cases of frequent stiffness adjustment across a wide range. A possible alternative is the VSDS that utilizes electric drives to simulate structural elasticity and damping, as seen in marine and bio-mechanical engineering, which however, cannot be directly applied to airfoil aeroelasticity testing (AAT) due to operation requirements and conditions being different. Therefore, in this study a new VSDS is developed specifically for AAT. Firstly, the concept of 1-DOF VSDS is extended to 2 DOFs, with the dynamics coupling between each DOF addressed at the stage of operation principle determination, by the proposed direct force/torque regulation with force/torque feedback. Secondly, resolution loss in position/velocity measurement is identified as a main problem associated with the non-reduction transmission required, and is solved by a modified extended-state observer (MESO) proposed for fast position/velocity estimation. Thirdly, systemidentification and calibration procedures involved in developing the new VSDS are reduced to minimum through a robust force/torque tracking controller design, with detailed numerical study on parametric analysis given. As validated in wind-tunnel experiments the new VSDS can closely track the desired force/torque and provide satisfactory virtual stiffness and damping in AAT. | - |
dc.description.statementofresponsibility | Difan Tang, Lei Chen, Zhao Feng Tian, Eric Hu | - |
dc.language.iso | en | - |
dc.publisher | Elsevier | - |
dc.rights | © 2019 Elsevier Ltd. All rights reserved. | - |
dc.source.uri | http://dx.doi.org/10.1016/j.jsv.2019.115061 | - |
dc.subject | Aeroelasticity; Virtual damping; Virtual stiffness | - |
dc.title | Developing a virtual stiffness-damping system for airfoil aeroelasticity testing | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1016/j.jsv.2019.115061 | - |
pubs.publication-status | Published | - |
dc.identifier.orcid | Tang, D. [0000-0002-7143-0441] | - |
dc.identifier.orcid | Chen, L. [0000-0002-2269-2912] | - |
dc.identifier.orcid | Tian, Z. [0000-0001-9847-6004] | - |
dc.identifier.orcid | Hu, E. [0000-0002-7390-0961] | - |
Appears in Collections: | Aurora harvest 4 Mechanical Engineering publications |
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