Control Effort Strategies for Acoustically Coupled Distributed Acoustic Nodes
Joint Authors
Antoñanzas, Christian
Ferrer, Miguel
de Diego, Maria
Gonzalez, Alberto
Source
Wireless Communications and Mobile Computing
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-15, 15 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-12-05
Country of Publication
Egypt
No. of Pages
15
Main Subjects
Information Technology and Computer Science
Abstract EN
This paper considers the effect of effort constraints on the behavior of an active noise control (ANC) system over a distributed network composed of acoustic nodes.
A distributed implementation can be desirable in order to provide more flexible, versatile, and scalable ANC systems.
In this regard, the distributed version of the multiple error filtered-x least mean square (DMEFxLMS) algorithm that allows collaboration between nodes has shown excellent properties.
However, practical constraints need to be considered since, in real scenarios, the acoustic nodes are equipped with power constrained actuators.
If these constraints are not considered within the adaptive algorithm, the control signals may increase and saturate the hardware devices, causing system instability.
To avoid this drawback, a control effort weighting can be considered in the cost function of the distributed algorithm at each node.
Therefore, a control effort strategy over the output signals at each node is used to keep them under a given threshold and ensuring the distributed ANC system stability.
Experimental results show that, assuming ideal network communications, the proposed distributed algorithm achieves the same performance as the leaky centralized ANC system.
A performance evaluation of several versions of the leaky DMEFxLMS algorithm in realistic scenarios is also included.
American Psychological Association (APA)
Antoñanzas, Christian& Ferrer, Miguel& de Diego, Maria& Gonzalez, Alberto. 2017. Control Effort Strategies for Acoustically Coupled Distributed Acoustic Nodes. Wireless Communications and Mobile Computing،Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1205790
Modern Language Association (MLA)
Antoñanzas, Christian…[et al.]. Control Effort Strategies for Acoustically Coupled Distributed Acoustic Nodes. Wireless Communications and Mobile Computing No. 2017 (2017), pp.1-15.
https://search.emarefa.net/detail/BIM-1205790
American Medical Association (AMA)
Antoñanzas, Christian& Ferrer, Miguel& de Diego, Maria& Gonzalez, Alberto. Control Effort Strategies for Acoustically Coupled Distributed Acoustic Nodes. Wireless Communications and Mobile Computing. 2017. Vol. 2017, no. 2017, pp.1-15.
https://search.emarefa.net/detail/BIM-1205790
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1205790