scholarly journals Active vibration control of a thin plate using piezoelectric sensors and actuators

1991 ◽  
Vol 89 (4B) ◽  
pp. 1890-1890
Author(s):  
S.‐Y. Hong ◽  
V. V. Varadan ◽  
V. K. Varadan
Keyword(s):  
Vibration Control ◽  
Thin Plate ◽  
Active Vibration Control ◽  
Piezoelectric Sensors ◽  
Sensors And Actuators ◽  
Piezoelectric Sensors And Actuators ◽  
Active Vibration

Active Vibration Control of a Hanged Rectangular Plate Partially Submerged Into Fluid by Using Piezoelectric Sensors and Actuators

2014 ◽  
Author(s):  
Moon K. Kwak ◽  
Dong-Ho Yang
Keyword(s):  
Vibration Control ◽  
Rectangular Plate ◽  
Natural Vibration ◽  
Active Vibration Control ◽  
Vibration Characteristics ◽  
Experimental Results ◽  
Piezoelectric Sensors ◽  
Sensors And Actuators ◽  
Piezoelectric Sensors And Actuators ◽  
Active Vibration

This paper is concerned with the active vibration control of a hanged rectangular plate partially submerged into a fluid by using piezoelectric sensors and actuators bonded to the plate. A dynamic model for the plate is derived by using the Rayleigh-Ritz method and the fluid effect is modeled by the virtual mass increase that is obtained by solving the Laplace equation. The natural vibration characteristics of the plate in air obtained theoretically are in good agreement with the experimental results. The changes in natural frequencies due to the presence of fluid were measured and compared to the theoretical predictions. Experimental results show that the theoretical predictions are in good agreement with the experimental results. The natural vibration characteristics of the plate both in air and in water are used for the active vibration control design. In this study, the multi-input and multi-output positive position feedback controller was designed based on the natural vibration characteristics and implemented by using a digital controller. Experimental results show that the vibration of the hanged rectangular plate both in air and partially submerged into a fluid can be successfully suppressed by using piezoelectric sensors and actuators.

ACTIVE VIBRATION CONTROL OF AN AIRCRAFT CABIN PANEL USING PIEZOELECTRIC SENSORS AND ACTUATORS

2003 ◽  
Vol 03 (01) ◽  
pp. 131-141 ◽  
Author(s):  
Y. Y. LEE ◽  
K. C. LAM ◽  
K. K. YUEN ◽  
H. F. LAM ◽  
J. YAO
Keyword(s):  
Vibration Control ◽  
Vibration Suppression ◽  
Active Vibration Control ◽  
Random Excitation ◽  
Piezoelectric Sensors ◽  
Mode Shapes ◽  
Sensors And Actuators ◽  
Aircraft Cabin ◽  
Piezoelectric Sensors And Actuators ◽  
Active Vibration

In this paper, the active vibration suppression of an aircraft cabin panel embedded with piezoelectric sensors and actuators under sinusoidal or random excitation is studied experimentally. The Independent Modal Space Control (IMSC) approach is employed in the controller design. The piezoelectric sensors and actuators associated with the IMSC technique have been applied to the active vibration control of the aircraft panel, and shown to be effective in vibration control. A second order controller is selected in the control scheme to suppress the fundamental modal vibration response of the aircraft cabin panel. The mode shapes of the panel are experimentally obtained, and used as the parameters of the objective functions for minimizing the unwanted vibration responses by appropriately selecting the sensor and actuator gains. Based on the experimental results, it is found that the vibration levels of the open and closed loop systems differ by up to 5.0 dB (for sinusoidal excitation) and 7.4 dB (for random excitation), even when the control circuit is interfered by electrical and magnetic noises.

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