Nonlinear noise generally has high uncertainty, difficult to accurately describe spectral characteristics, large steady-state errors, and poor transient performance. Effective control of nonlinear noise is a challenging task. Therefore, a nonlinear active noise control algorithm based on weight optimization AF is proposed. This algorithm uses the sine and cosine components of the reference signal for direct frequency analysis, analyzes the primary noise and narrowband frequency range, obtains accurate noise estimation results, and improves the accuracy and effectiveness of noise control. By training the results of nonlinear active noise estimation and adjusting the weights of the adaptive filter, the reconstruction of the expected output signal is achieved, effectively suppressing the influence of nonlinear noise and improving the control effect. The experimental results show that under this algorithm, the mean square error of signal noise is low and the steady-state error is small, which can adapt to various complex noise environments and effectively improve the quality of noise control, it has high practicality and reliability.
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