基于TPA的某皮卡车道路噪声问题诊断及优化

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中图分类号：U462.3;TP391.99 文献标志码：B

Abstract： To address the road noise issue in a pickup truck prototype，the wheel center force loading method is employed to simulate and optimize the vehicle road noise. The wheel center acceleration responses at specific speeds are measured experimentally，and the transfer functions from the wheel centers to the measurement points are simulated and calculated. Using inverse matrix theory and principal component analysis（PCA），24 linearly independent principal components of the wheel center forces are obtained and applied to the full-vehicle simulation model，yielding road noise results that closely matched the experimental data. Combining with the concept of transfer path analysis（TPA），a rapid diagnostic method for identifying road noise peaks is proposed，enabling eficient localization of problem areas. The optimization results of the pickup truck chasss bushing stiffness demonstrated the ffctiveness of the proposed diagnostic and optimization process.

Key Words： wheel center force; inverse matrix； transfer path analysis（TPA）； chassis mode; bushingstiffness ； parameter optimization

0 引言

一，是车辆NVH性能控制的重要指标[1]。（剩余6042字）