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|Type:||Artigo de evento|
|Title:||Comparing Feedforward And Feedback Compensators For Active Structural Acoustic Isolation|
|Abstract:||This paper compares the limitations of "optimal" feedforward and feedback strategies for active structural acoustic control, where the emphasis is on controlling structural vibration that is responsible for sound radiation. The aim is to attenuate the sound pressure transmitted through a double panel system filled with absorption material. The controller must attenuate the noise radiated through the back panel when the front panel is excited by an external force that causes structural vibration. The actuators are piezoelectric patches attached to the back panel. We compare distinct "optimal" control strategies. In the feedforward setting, we design in the Linear Matrix Inequality (LMI) framework an H2 and H∞ filter that assume full information of the exogenous disturbance. In the feedback setting, the control laws are designed using an H2/H∞ control problem posed as LMIs, that assumes full information of the state. With little modification, these designs can be made robust to parametric uncertainties.|
|Appears in Collections:||Artigos e Materiais de Revistas Científicas - Unicamp|
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