Abstract
Active vibration control to suppress structural vibration of the smart hull structure was investigated based on optimized actuator configurations. Advanced anisotropic piezoelectric composite actuator, Macro-Fiber Composite (MFC), was used for the vibration control. Governing equations of motion of the smart hull structure including MFC actuators were obtained using the DonnellMushtari shell theory and Lagranges equation. The RayleighRitz method was used to obtain the dynamic characteristics of the smart hull structure. Experimental modal tests were conducted to verify the proposed mathematical model. In order to achieve high control performance, optimal locations and directions of the MFC actuators were determined by genetic algorithm. Optimal control algorithm was then synthesized to suppress structural vibration of the proposed smart hull structure and experimentally implemented to the system. Active vibration control performances were evaluated under various modes excitations. Vibration tests revealed that optimal configurations of MFC actuators improved the control performance of the smart hull structure in case of the limited number of actuators available.
| Original language | English |
|---|---|
| Pages (from-to) | 647-659 |
| Number of pages | 13 |
| Journal | International Journal of Mechanical Sciences |
| Volume | 53 |
| Issue number | 8 |
| DOIs | |
| State | Published - Aug 2011 |
Keywords
- Cylindrical shell structure
- Genetic algorithm
- Macro-fiber composite actuator
- Optimal configuration
- Piezoelectric actuator
- Structural vibration control