Optimal Design of Disk Shaped Piezoelectric Actuator and Sensor for Noise Control of Plate Structure

판 구조물의 소음 제어를 위한 압전가진기와 감지기의 최적 설계

Optimal design of disk shaped piezoelectric actuator and sensor mounted on the plate structure is studied for the control of noise radiated fro the structure. The sensor signal is returned to the actuator through negative gain. Finite element modelling is used for the plate structure and the disk shaped piezoelectric sensor and actuator. The objective function is the total radiated sound power and the design variables are the locations and sizes of the piezoelectric actuator and sensor. The optimal is performed at the resonance and the off resonance frequency and the results show good noise reduction.