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http://dx.doi.org/10.5050/KSNVE.2015.25.3.191

Active Control of Noise Propagated through Ventilation Openings of Enclosures Using an FIR Filter  

Ji, Sumin (School of Mechanical Engineering, Pusan National University)
Hong, Chinsuk (School of Mechanical Engineering, Ulsan College)
Jeong, Weui-Bong (School of Mechanical Engineering, Pusan National University)
Kim, Tae-Hoon (LG Electronics Inc.)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.3, 2015 , pp. 191-198 More about this Journal
Abstract
Noise propagated through the ventilation openings of enclosures is actively controlled using an FIR filter. The enclosures considered in this paper are used for isolating noise due to machinery. This method is of limited use because of the ventilation openings through which most of noise is propagated. Feedforward control strategy is incorporated to minimize the acoustic power propagated through the openings. For the real-time implementation, although it is numerical study, the controller is implemented using an FIR filter. The acoustic transfer functions of the pressure on the openings of the enclosure to the primary source and to the secondary source are numerically calculated using the boundary element method. The performance analysis of the active control is conducted with the time-domain simulation using Matlab Simulink.
Keywords
Active Noise Control; Feedforward Control; Enclosure; Finite Impulse Response Filter; Controller; Block Diagram;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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