IMPLEMENTATION OF ADAPTIVE HARMONIC NOISE CONTROLLER FOR ENGINE EXHAUST SYSTEM WITH FREQUENCY MULTIPLIER CIRCUIT

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 noise of exhaust system. (A)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14775360
• Authors:
  • WU, J-D
  • LIN, H-P
  • LEE, T-H
• Publication Date: 2004

Language

• English

Media Info

• Features: References;
• Pagination: p. 260-73
• Serial:
  • International Journal of Vehicle Design
  • Volume: 35
  • Issue Number: 3
  • Publisher: Inderscience Enterprises Limited
  • ISSN: 1477-5360
  • Serial URL: http://www.inderscience.com/jhome.php?jcode=IJVD

Subject/Index Terms

• TRT Terms: Evaluation and assessment; Exhaust pipes; Frequency (Electromagnetism); Noise
• ITRD Terms: 9020: Evaluation (assessment); 1384: Exhaust pipe; 6997: Frequency; 2492: Noise
• Subject Areas: Environment; Planning and Forecasting;

Filing Info

• Accession Number: 00978276
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD
• Created Date: Sep 3 2004 12:00AM