Adaptive control of broadband noise in a light jet
Adaptive control of broadband noise in a light jet
- Neue Suche nach: Sachau, Delf
- Neue Suche nach: Pabst, Oliver
- Neue Suche nach: Sachau, Delf
- Neue Suche nach: Pabst, Oliver
Active systems for noise reduction are especially of interest when considering applications in which low frequency noise is a main source of disturbance and only limited amounts of installation space and payload are available. In this paper the active attenuation of broadband acoustic disturbances in a light jet aircraft cabin is discussed. An approach to this problem is shown, considering various problems in design and choice of control method. Using acquired data from an in-flight measurement in a typical light jet, a noise control concept is developed using a multichannel modified filtered-x algorithm (mFxLMS). The ANC (Active Noise Control) system is designed and implemented in a light jet aircraft mock-up. Experimental results are presented, showing successful broadband reduction capabilities (up to 15dB, 50Hz < f < 500Hz) of a MIMO system for 4 seats in the mock-up cabin. Furthermore, considerations towards the implementation of a feedback control system for the target environment are discussed with respect to a global control scheme. The concept of a feedback broadband noise barrier is analyzed in a simplified mock-up.
Dokumentinformationen
Adaptive control of broadband noise in a light jet
Adaptivregelung des Breitbandgeräusches in einem Leichtstrahlflugzeug
2009
8 Seiten, 9 Bilder, 1 Tabelle, 12 Quellen
Aufsatz (Konferenz)
Englisch
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