Adaptive Algorithms for Active Noise and Vibration Control

Abstract

The objective of this project was to develop and analyze advanced adaptive schemes for the active attenuation of sound and vibration. Implementations of algorithms such as the filtered-X LMS algorithm were proposed that require fewer computations than the standard implementation. Delay compensation techniques were also developed to combat performance reducing effects due to delay within the parameter updates. In particular, the extension of the method to adaptive echo cancellation was investigated. Progress was also made on adaptive algorithms for the rejection of periodic disturbances without measurement of the disturbance or of its frequency. A direct approach and an indirect approach were studied, and the resulting algorithms were tested successfully on an active noise control testbed. Disturbances with multiple harmonics and multi-channel systems were both considered.

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Document Details

Document Type
Technical Report
Publication Date
Jul 17, 2000
Accession Number
ADA385133

Entities

People

  • Marc Bodson

Organizations

  • University of Utah

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Human Systems
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Acoustics
  • Algorithms
  • Closed Loop Systems
  • Communication Systems
  • Computational Complexity
  • Computational Science
  • Control Systems
  • Control Systems Engineering
  • Digital Signal Processing
  • Electrical Engineering
  • Electronic Mail
  • Frequency
  • Linear Systems
  • Mathematical Filters
  • Measurement
  • Network Science
  • Signal Processing

Fields of Study

  • Engineering

Readers

  • Acoustics.
  • Phased Array Antenna Design.
  • Robotics and Automation.