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针对传统的空域相关降噪法进行了改进。该改进算法首先对信号进行二进小波变换,然后通过引入适当的系数来避免将噪声误判为信号,最后将近似系数和处理后的小波系数进行逆小波变换得到降噪后的信号。使用该改进算法对轮式装载机实测载荷信号进行降噪处理的结果表明,改进后的空域相关降噪法具有良好的降噪性能。
Aimed at the traditional airspace-related noise reduction method is improved. The improved algorithm firstly carries out the binary wavelet transform on the signal, and then introduces the appropriate coefficient to avoid the misjudgment of the noise as the signal. Finally, the approximation coefficient and the processed wavelet coefficient are inverse transformed to get the denoised signal. The improved algorithm is used to reduce the noise of the actual load signal of the wheel loader. The results show that the improved spatial correlation noise reduction method has good noise reduction performance.