Cylindrical panel interior noise control using a pair of piezoelectric actuator and sensor

Active control of acoustic pressure in a cylindrical cavity with a flexible cylindrical panel using a pair of piezoelectric actuator and sensor, which is one part of the cylindrical panel, is simulated. Model expansion method is used in the establishment of the state equation of the system. The acti ve vibration control of the cylindrical panel and the interior noise reduct ion are performed by applying the linear quadratic Gaussian (LQG) control t heory to the structural acoustic coupled system. Two cases of different ext ernal forces acting on the cylindrical panel are illustrated. The results d emonstrate that such a control system can efficiently reduce the structural -borne noise. (C) 2001 Academic Press.