FPLG整机声辐射影响规律试验研究
Experimental Study on the Influence Law of Sound Radiation of FPLG
为探究自由活塞直线发电机（FPLG）整机声辐射影响规律，开展噪声测试台架试验。通过LMS测试系统进行数据采集及处理，选择平行六面体测量面并安装7个传声器，针对某FPLG探究喷油脉宽、点火位置、喷油位置等参数变化对整机声辐射的影响规律。结果显示，在试验探究的范围内，整机运转时的声压级随喷油脉宽增加而增加，呈正相关；点火位置为27mm时，FPLG工作状况最佳，整机声压级为107.2dB；喷油位置为39mm时，整机声压级明显高于对照组，达到105.6d…查看全部>>
In order to investigate the effect of sound radiation on free-piston linear generator (FPLG), the noise test bench test was carried out. The LMS test system was used for data acquisition and processing, and 7 microphones were installed and a parallelohedron measuring surface was selected to explore the influence of parameters such as injection pulse width, ignition position and injection position on the sound radiation of a certain FPLG. The results show tha…查看全部>>
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