The implementation of modal estimation for structural acoustics control
| Autor: | Chi-Yi Chiu, Chia-Chi Sung |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Engineering
Anechoic chamber business.industry Acoustics Function (mathematics) Condensed Matter Physics Accelerometer Sound power Atomic and Molecular Physics and Optics Modal Mechanics of Materials Control theory Signal Processing Range (statistics) Electronic engineering General Materials Science Electrical and Electronic Engineering business Structural acoustics Civil and Structural Engineering |
| Zdroj: | Smart Materials and Structures. 6:592-600 |
| ISSN: | 1361-665X 0964-1726 |
| DOI: | 10.1088/0964-1726/6/5/010 |
| Popis: | Piezoceramic controllers modeled by four-point moments are employed to reduce the sound power transmitted through the clamped plate. The state of the plate is obtained from the accelerometers through the modal filter. The relationship between the structural vibration and the transmitted sound power is then derived to determine the sound potential which is used as the cost function. This completes the design of the state-feedback controller. The dynamics of the plate are altered due to state feedback, as expected. The experiment was conducted in an anechoic chamber. The theoretical and experimental results show that the sound power transmitted in the low-frequency range can be reduced effectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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