基于ERP方法对整车加速噪声的优化设计

Optimization Design of Vehicle Acceleration Noise based on ERP Method

车身钣金的低频振动对车内噪声影响巨大,钣金的声辐射能量是控制车内低频噪声的重要因素。文章利用声音的互逆性原理,采用频响法计算单一子系统的ERP,可以快速获得车身主要钣金的声辐射贡献量,由此驱动优化方案的设计。

The low-frequency vibration of the body panel has a great influence on the interior noise.The acoustic radiation power of the body panel is an important factor to control the interior low-frequency noise.The frequency response method is used to calculate the ERP of a single subsystem based on the reciprocal principle of sound,which can quickly obtain the acoustic radiation contribution of the main body panel,thereby driving the design of the optimization scheme.