National Changhua University of Education Institutional Repository : Item 987654321/18328
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题名: Implementation of Adaptive Harmonic Noise Controller for Engine Exhaust System with Frequency Multiplier Circuit
作者: Wu, Jian-Da;Lin, Hai-Ping;Lee, Tian-Hua
贡献者: 車輛科技研究所
关键词: Acoustics;Active noise control;Blade passing frequency;Engine exhaust system;Centrifugal fan;Internal combustion engine
日期: 2004
上传时间: 2014-04-29T07:26:25Z
出版者: Inderscience Publishers
摘要: 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.
關聯: International Journal of Vehicle Design, 35(3): 260-273
显示于类别:[車輛科技研究所] 期刊論文

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