According to the problems in control of transformer noise,an improved active noise control algo-rithm is proposed.In this algorithm,the square Euclidian norm of the input signal and the error signal of the hy-perbolic tangent function are introduced into the step factor to adjust it.This method can deal with the situation that the input noise energy changes greatly,thus algorithm can obtain both faster noise reduction speed and high-er noise reduction amount in the transformer noise control.Through comparison and simulation with different al-gorithms,it can be seen from the analysis that the improved algorithm has a better noise reduction effect on transformer noise.
active noise controlimproved algorithmtransformer noisestep factor
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