The active control of vibration using point actuators has received much attention. Presented here is a means by which panel vibrations may be controlled through the action of a dis tributed actuator. The actuator consists of a single-sheet piezoceramic adhesively bonded to the sur face of the panel. Control is achieved by a digital control law that artificially increases the damping of the modes which dominate the panel response, the sensing being provided by a single accelerom eter mounted on the panel surface. Presented are results that demonstrate the effectiveness of the control law/piezoceramic actuator combination. In order to show that a reduction in vibration levels is also achieved at points other than at the sensing accelerometer, acceleration levels are monitored at other points on the plate. The results show that panel vibrations may indeed be successfully con trolled through the action of the distributed piezoceramic actuator.
[1]
E. Crawley,et al.
Use of piezoelectric actuators as elements of intelligent structures
,
1987
.
[2]
C. Fuller,et al.
Piezoelectric Actuators for Distributed Vibration Excitation of Thin Plates
,
1991
.
[3]
Scott D. Snyder,et al.
Experiments on active control of sound radiation from a panel using a piezoceramic actuator
,
1991
.
[4]
Darrell Williamson,et al.
Digital Control and Implementation
,
1991
.
[5]
S. Poh,et al.
Performance of an active control system with piezoelectric actuators
,
1988
.
[6]
Lennart Ljung,et al.
System Identification: Theory for the User
,
1987
.
[7]
Scott D. Snyder,et al.
Active control of sound radiation from a vibrating rectangular panel by sound sources and vibration inputs: An experimental comparison
,
1991
.