A novel active noise control (ANC) technique using adaptive frequency multiplier circuit for blade passing frequency (BPF) noise of centrifugal fan and harmonic noise of engine exhaust system is proposed. The proposed ANC system is based on the well-known adaptive controller with filtered-x least-mean-square (FXLMS) using variable step size convergence technique. The proposed controller is realised on finite impulse response (FIR) filter and implemented by using a TMS320C32 digital signal processor (DSP) with reference signal from optical fibre sensor and frequency multiplier circuit. Experiments are carried out to evaluate the noise attenuation of the proposed ANC system for centrifugal fan and engine exhaust system. The experimental results indicate that the frequency multiplier circuit could improve the performance in reducing the noise at the BPF of centrifugal fan and periodic noice of exhaust system.


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    Titel :

    Implementation of adaptive harmonic noise controller for engine exhaust system noise controller for engine exhaust system with frequency multiplier circuit


    Weitere Titelangaben:

    Einführung eines harmonischen Adaptivschallreglers für Auspuffanlagen mit Frequenzvervielfacher


    Beteiligte:
    Wu, Jian-Da (Autor:in) / Lin, Hai-Ping (Autor:in) / Lee, Tian-Hua (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2004


    Format / Umfang :

    14 Seiten, 9 Bilder, 2 Tabellen, 11 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch







    Engine Exhaust Noise Test Facility

    Kirkland, Kenneth C. | SAE Technical Papers | 1973


    Intermittent Combustion Engine Exhaust Noise

    Patrick, H. V. L. / Tada, H. | British Library Conference Proceedings | 2001