Feedforward and feedback control strategy for active noise cancellation in ducts

Jwu-Sheng Hu*

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

This paper presents the theoretical work about active noise cancellation in ducts. The proposed control system is designed based on the assumption of a one-dimensional sound field. The controller consists of a feedforward block which serves as a noise observer. The feedback portion of the control algorithm is to minimize residual disturbances. Closed loop stability of the MIMO (multiple-input-multiple-output) system is analyzed and the result shows that the dynamic influenced by the space-feedforward and feedback controllers can be decoupled. Both semi-infinite and finite-length ducts are considered in this study and simulation examples are given to illustrate the effectiveness of the proposed controllers.

Original languageEnglish
Pages57-68
Number of pages12
StatePublished - 1 Dec 1994
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: 6 Nov 199411 Nov 1994

Conference

ConferenceProceedings of the 1994 International Mechanical Engineering Congress and Exposition
CityChicago, IL, USA
Period6/11/9411/11/94

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