Decentralized Feedback Control of Broadband Duct Noise with Nodal Placement of Colocated Actuator-Sensor Pairs

Author:

Jayachandran V.1,Petrova Maria V.1,Li Florence J.1,King Patrick1,Meyer Nancy E.1,Sun J. Q.1

Affiliation:

1. Department of Mechanical Engineering, University of Delaware, Newark, DE 19716

Abstract

This paper presents experimental results from a demonstration of feedback control experiments on an open-ended acoustic duct, using nodally placed colocated actuator-sensor pairs. The disturbance signal used in the experiments is bandlimited and random. The first three modes undergo as much as 20 dB attenuation. The simplicity of the nodal control together with the spatially global sound reduction makes this a suitable technique for suppressing low frequency broadband duct noise.

Publisher

ASME International

Subject

General Engineering

Reference17 articles.

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2. Tichy, J. , 1991, “Current and future issues of active noise control,” J. Acoust. Soc. Jpn. (E), 12, pp. 255–262.

3. Nelson, P. A., and Elliot, S. J., 1992, Active Control of Sound, Academic Press, New York.

4. Elliott, S. J., Sutton, T. J. Rafaely, B., and Johnson, M., 1995, “Design of feedback controllers using a feedforward approach,” Proceedings of Active 95.

5. Hu, J. S. , 1996, “Feedforward and feedback control strategy for active noise cancellation in ducts,’ASME J. Dyn. Syst., Meas., Control, 118, pp. 372–278.

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