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Inicio  /  Acoustics  /  Vol: 1 Par: 1 (2019)  /  Artículo
ARTÍCULO
TITULO

Positive Position Feedback Control of a Galloping Structure

Mohammad Yaghoub Abdollahzadeh Jamalabadi    

Resumen

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.

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