Active control of structural acoustic pressure in a rectangular cavity using piezoelectric actuators

摘要

Active control of structural acoustic pressure in a rectangular cavity with a flexible beam is simulated numerically. The wave equation of the acoustic pressure and the equation of the beam are approximated via the series expansions, and is then expressed in state space form. The control of structural acoustic pressure and vibration of the beam was implemented by applying the optimal voltage on piezoelectric actuators through an LQR conntroller.