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Open AccessArticle

Positive Position Feedback Control of a Galloping Structure

Department of Mechanical, Robotics and Energy Engineering, Dongguk University, Seoul 04620, Korea
Acoustics 2019, 1(1), 47-58; https://doi.org/10.3390/acoustics1010005
Received: 9 October 2018 / Revised: 5 December 2018 / Accepted: 9 December 2018 / Published: 13 December 2018
In this study, the suppression of wind-induced oscillations of a D-shaped prism mounted on a cantilever beam by means of a positive position feedback (PPF) controller is investigated. The assumed mode method is applied to determine the stiffness, mass and non-linear force matrixes of a second order ordinary differential equation system. The positive position feedback control by use of a sensor-actuator piezoelectric is implemented on the galloping system to suppress the mechanical oscillations. The results show that the PPF controller is a powerful method to decrease the galloping amplitude of the D-shaped prism. The numerical results are in a good agreement with experimental results. View Full-Text
Keywords: fluid-structure interaction; galloping effect; vibration control; positive position feedback fluid-structure interaction; galloping effect; vibration control; positive position feedback
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Abdollahzadeh Jamalabadi, M.Y. Positive Position Feedback Control of a Galloping Structure. Acoustics 2019, 1, 47-58.

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