变压器噪声控制研究

Research on Noise Control of Transformer

针对变压器噪声控制问题,提出一种改进有源噪声控制算法。该算法在步长因子中同时引入输入信号的平方欧式范数和双曲正切函数特性的误差信号两个因素,进行步长因子调控,该方法能很好地应对输入噪声能量变化较大的情况,使算法在变压器噪声控制中既能获得较快的降噪速度又能获得较高的降噪量。通过与不同算法进行比较仿真,由分析可知,改进算法对变压器噪声的降噪效果要优于其他算法。

According to the problems in control of transformer noise,an improved active noise control algorithm is proposed.In this algorithm,the square Euclidian norm of the input signal and the error signal of the hyperbolic 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 higher noise reduction amount in the transformer noise control.Through comparison and simulation with different algorithms,it can be seen from the analysis that the improved algorithm has a better noise reduction effect on transformer noise.