Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/126174
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Type: Conference paper
Title: Developing a virtual stiffness-damping system for airfoil aeroelasticity testing
Author: Tang, D.
Chen, L.
Tian, Z.
Hu, E.
Citation: Proceedings of the 20th IEEE International Conference on Industrial Technology (ICIT 2019), 2019 / vol.2019-February, pp.96-101
Publisher: IEEE
Publisher Place: Piscataway, NJ
Issue Date: 2019
Series/Report no.: IEEE International Conference on Industrial Technology; 2019
ISBN: 9781538663776
ISSN: 2641-0184
2643-2978
Conference Name: The 20th IEEE International Conference on Industrial Technology (ICIT) (13 Feb 2019 - 15 Feb 2019 : Melbourne, Australia)
Statement of
Responsibility: 
Difan Tang, Lei Chen, Zhao Feng Tian, Eric Hu
Abstract: Development of a two-degrees-of-freedom (2-DOF) virtual stiffness-damping system (VSDS) to facilitate industrial and laboratory testing of airfoil aeroelastic instability (AAT) is presented in this paper. Development and use of existing testbeds are costly due to involvement of physical springs to simulate airfoil elasticity. Although replacing physical springs with a VSDS has been used in other fields such as marine and biomechanics engineering, existing VSDSs cannot be directly used for 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 proposing direct force/torque regulation with force/torque feedback. Secondly, resolution loss in velocity measurement is identified as a main problem associated with the non-reduction transmission required and is solved by proposing a modified extended-state observer (MESO) for fast velocity estimation. Thirdly, system identification and calibration procedures involved in developing the new VSDS is reduced to minimum by applying a robust force/torque tracking controller. 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.
Keywords: aeroelasticity; virtual stiffness; virtual damping
Rights: ©2019 IEEE
RMID: 0030113542
DOI: 10.1109/ICIT.2019.8755200
Published version: https://ieeexplore.ieee.org/xpl/conhome/8746085/proceeding
Appears in Collections:Mechanical Engineering conference papers

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