Abstract
This paper describes a basic theory for modal cluster decomposition on two-dimensional frequency domain and a design method of real-time filter to extract each decomposed modal cluster. At first, the concept of modal cluster decomposition was introduced. Then, an objective function was derived to determine the sensor placement to realize the modal cluster decomposition. The sensor placement is optimized to place each modal cluster on any selected line in two-dimensional frequency domain. By using the two-dimensional Fourier transform of the array sensor outputs, which are measured at selected optimal sensor locations, desired modal cluster decomposition is realized. In order to extract the desired modal cluster on real-time, we also derived a design method of two-dimensional FIR filter. This filter computes the simple summation of current signals for a spatial direction, and hence there is no time delay to extract the signal of a desired modal cluster.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of ISMA2006: International Conference on Noise and Vibration Engineering |
| Publisher | Katholieke Universiteit Leuven |
| Pages | 3295-3304 |
| Number of pages | 10 |
| Volume | 6 |
| Publication status | Published - 2006 |
| Externally published | Yes |
| Event | International Conference on Noise and Vibration Engineering 2006, ISMA 2006 - Heverlee Duration: 2006 Sep 18 → 2006 Sep 20 |
Other
| Other | International Conference on Noise and Vibration Engineering 2006, ISMA 2006 |
|---|---|
| City | Heverlee |
| Period | 06/9/18 → 06/9/20 |
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ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Mechanical Engineering
- Materials Science(all)
- Acoustics and Ultrasonics
- Condensed Matter Physics
Cite this
Modal cluster decomposition on two-dimensional frequency domain and its real-time filtering. / Matsumura, Y.; Hosoya, Naoki.
Proceedings of ISMA2006: International Conference on Noise and Vibration Engineering. Vol. 6 Katholieke Universiteit Leuven, 2006. p. 3295-3304.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Modal cluster decomposition on two-dimensional frequency domain and its real-time filtering
AU - Matsumura, Y.
AU - Hosoya, Naoki
PY - 2006
Y1 - 2006
N2 - This paper describes a basic theory for modal cluster decomposition on two-dimensional frequency domain and a design method of real-time filter to extract each decomposed modal cluster. At first, the concept of modal cluster decomposition was introduced. Then, an objective function was derived to determine the sensor placement to realize the modal cluster decomposition. The sensor placement is optimized to place each modal cluster on any selected line in two-dimensional frequency domain. By using the two-dimensional Fourier transform of the array sensor outputs, which are measured at selected optimal sensor locations, desired modal cluster decomposition is realized. In order to extract the desired modal cluster on real-time, we also derived a design method of two-dimensional FIR filter. This filter computes the simple summation of current signals for a spatial direction, and hence there is no time delay to extract the signal of a desired modal cluster.
AB - This paper describes a basic theory for modal cluster decomposition on two-dimensional frequency domain and a design method of real-time filter to extract each decomposed modal cluster. At first, the concept of modal cluster decomposition was introduced. Then, an objective function was derived to determine the sensor placement to realize the modal cluster decomposition. The sensor placement is optimized to place each modal cluster on any selected line in two-dimensional frequency domain. By using the two-dimensional Fourier transform of the array sensor outputs, which are measured at selected optimal sensor locations, desired modal cluster decomposition is realized. In order to extract the desired modal cluster on real-time, we also derived a design method of two-dimensional FIR filter. This filter computes the simple summation of current signals for a spatial direction, and hence there is no time delay to extract the signal of a desired modal cluster.
UR - http://www.scopus.com/inward/record.url?scp=84897052485&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84897052485&partnerID=8YFLogxK
M3 - Conference contribution
VL - 6
SP - 3295
EP - 3304
BT - Proceedings of ISMA2006: International Conference on Noise and Vibration Engineering
PB - Katholieke Universiteit Leuven
ER -