能動騒音制御による歯車騒音の低減

抄録

This paper presents a study on reduction of gear noise with active noise control(ANC). An ANC system of feed forward control type on the basis of the Filtered-X LMS algorithm was developed. As a basic study of the noise reduction with ANC, the ANC experiment using duct was carried out with recorded noises of SCM 415 case-hardened and ADI gears for the cases where the gear noise and the signal of sinusoidal waveform with mesh frequency were used as the reference signal in the ANC system. Furthermore, the noise reduction of ADI gears with ANC using an actual power-absorbing-type gear testing machine was examined for the case where the vibratoin acceleration signal of bearing box was used as the reference signal. It was shown that the present ANC system was useful for the reduction of gear noise. The frequency analyses of gear noises were carried out, and frequency components reduced with the ANC were determined.