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• W3177238670 abstract "Elastic vibration can arise in annular and thin-walled rotor structures, impacting on operating performance and the risk of failure. Feedback control to reduce flexural vibration can be realized using lightweight actuators and sensors embedded in the rotor structure. To design optimal controllers, rotating-frame models of both the structural dynamics and sources of excitation are required. This paper describes a solution to this problem for the case of an annular rotor equipped with piezo patch actuators and sensors. To account for space-fixed external excitation sources, a forcing function is considered involving specified spatial and frequency domain distributions. A model-based [Formula: see text] synthesis is used to compute optimal control solutions. These are tested experimentally on a thin-walled cylindrical steel rotor for cases with narrowband and broadband excitation sources, applied from the fixed frame. The results show that frequency-splitting within the rotating-frame dynamics plays a key role in predicting and controlling resonance. The effectiveness of the optimal control methodology in reducing circumferential vibration of the annular rotor is also confirmed." @default.
• W3177238670 created "2021-07-05" @default.
• W3177238670 creator A5040154591 @default.
• W3177238670 creator A5061976277 @default.
• W3177238670 date "2021-06-17" @default.
• W3177238670 modified "2023-09-24" @default.
• W3177238670 title "Piezo-based flexural vibration suppression for an annular rotor via rotating-frame H2 control optimization" @default.
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• W3177238670 doi "https://doi.org/10.1177/1045389x211023585" @default.
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