Abstract
The active control technique for broadband attenuation of noise in ducts, using spatially feedforward structure, is investigated from the viewpoints of both acoustic analysis and control engineering. According to the previous work by Munjal and Eriksson [1], there exists an ideal controller for this problem. The ideal controller is a function of the finite source impedance and is thus independent of the boundary conditions. Despite the simplicity, the ideal controller cannot be practically implemented due to the difficulty of calibration of electro-mechanical parameters. To overcome the problem, the controller is implemented via an equivalent formulation modified from the controller originally proposed by Roure [2]. The modified controller is implemented on a DSP platform, using a FIR filter, an IIR filter and a hybrid filter. The experimental results showed that the system achieved 17.2 dB maximal attenuation in the frequency band 300;600 Hz. Physical insights and design considerations in implementation phase are also discussed in the paper.
| Original language | English |
|---|---|
| Pages (from-to) | 129-136 |
| Number of pages | 8 |
| Journal | Journal of Vibration and Acoustics, Transactions of the ASME |
| Volume | 123 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2001 Jan 1 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Acoustics and Ultrasonics
- Mechanics of Materials
- Mechanical Engineering
Cite this
}
Analysis and dsp implementation of a broadband duct anc system using spatially feedforward structure. / Bai, Mingsian R.; Lin, Yujeng; Wu, Jian-Da.
In: Journal of Vibration and Acoustics, Transactions of the ASME, Vol. 123, No. 2, 01.01.2001, p. 129-136.Research output: Contribution to journal › Article
TY - JOUR
T1 - Analysis and dsp implementation of a broadband duct anc system using spatially feedforward structure
AU - Bai, Mingsian R.
AU - Lin, Yujeng
AU - Wu, Jian-Da
PY - 2001/1/1
Y1 - 2001/1/1
N2 - The active control technique for broadband attenuation of noise in ducts, using spatially feedforward structure, is investigated from the viewpoints of both acoustic analysis and control engineering. According to the previous work by Munjal and Eriksson [1], there exists an ideal controller for this problem. The ideal controller is a function of the finite source impedance and is thus independent of the boundary conditions. Despite the simplicity, the ideal controller cannot be practically implemented due to the difficulty of calibration of electro-mechanical parameters. To overcome the problem, the controller is implemented via an equivalent formulation modified from the controller originally proposed by Roure [2]. The modified controller is implemented on a DSP platform, using a FIR filter, an IIR filter and a hybrid filter. The experimental results showed that the system achieved 17.2 dB maximal attenuation in the frequency band 300;600 Hz. Physical insights and design considerations in implementation phase are also discussed in the paper.
AB - The active control technique for broadband attenuation of noise in ducts, using spatially feedforward structure, is investigated from the viewpoints of both acoustic analysis and control engineering. According to the previous work by Munjal and Eriksson [1], there exists an ideal controller for this problem. The ideal controller is a function of the finite source impedance and is thus independent of the boundary conditions. Despite the simplicity, the ideal controller cannot be practically implemented due to the difficulty of calibration of electro-mechanical parameters. To overcome the problem, the controller is implemented via an equivalent formulation modified from the controller originally proposed by Roure [2]. The modified controller is implemented on a DSP platform, using a FIR filter, an IIR filter and a hybrid filter. The experimental results showed that the system achieved 17.2 dB maximal attenuation in the frequency band 300;600 Hz. Physical insights and design considerations in implementation phase are also discussed in the paper.
UR - http://www.scopus.com/inward/record.url?scp=0001934519&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001934519&partnerID=8YFLogxK
U2 - 10.1115/1.1355031
DO - 10.1115/1.1355031
M3 - Article
AN - SCOPUS:0001934519
VL - 123
SP - 129
EP - 136
JO - Journal of Vibration and Acoustics, Transactions of the ASME
JF - Journal of Vibration and Acoustics, Transactions of the ASME
SN - 1048-9002
IS - 2
ER -