A Hybrid Nonlinear Active Noise Control Method Using Chebyshev Nonlinear Filter

• 作者: Bin Chen Shuyue Yu Yan Gao
• 来源期刊: 声音与振动(英文)
• 学科: 数学
• 关键词: NONLINEAR active noise control CHEBYSHEV NONLINEAR FILTER NON-STATIONARY noise ENSEMBLE empirical mode DECOMPOSITION
• 年，卷（期）: syyzdyw_2018,（4）
• 页码范围: 21-27
• 页数: 7页
• 分类号: O17

摘要

Investigations into active noise control(ANC)technique have been conducted with the aim of effective control of the low-frequency noise.In practice,however,the performance of currently available ANC systems degrades due to the effects of nonlinearity in the primary and secondary paths,primary noise and louder speaker.This paper proposes a hybrid control structure of nonlinear ANC system to control the non-stationary noise produced by the rotating machinery on the nonlinear primary path.A fast version of ensemble empirical mode decomposition is used to decompose the non-stationary primary noise into intrinsic mode functions,which are expanded using the second-order Chebyshev nonlinear filter and then individually controlled.The convergence of the nonlinear ANC system is also discussed.Simulation results demonstrate that proposed method outperforms the FSLMS and VFXLMS algorithms with respect to noise reduction and convergence rate.