基于整车控制参数同步采集的车辆异响识别分析

针对整车控制参数引发的车辆异响问题，介绍了一种基于整车控制参数与NVH数据同步采集的分析方法，通过采用数据协议和格式的双转换，实现了整车/发动机控制参数和整车NVH测试数据的同步采集，并通过控制参数和NVH信号的时域相关性分析，快速准确地定位异响原因。通过底盘冲击异响、涡轮气流异响、整车换挡抖动异响三个案例，介绍了整车控制参数同步采集在工程中的实际应用，快速准确的识别异响原因，并完成优化验证，为异响排查和控制提供了新的方法和思路。 关键词：整车异响；车辆控制参数；数据同步采集；相关性分析

Identification and analysis method of abnormal sound of vehicle based on synchronous acquisition of vehicle control parameters

For the abnormal noise caused by vehicle control parameters, a kind of analysis method based on synchronous acquisition of vehicle control parameters and NVH data is introduced. Through the adoption of the double conversion method for protocol and data format, it has realized the synchronous data acquisition of the vehicle/engine control parameters and NVH testing data to complete the control parameters and NVH signal correlation analysis of time domain. The cause of NVH problem can be quickly and accurately located. Through the chassis impact abnormal sound, turbine airflow abnormal sound, vehicle shift jitter three cases. The practical application of vehicle control parameters synchronous acquisition in engineering is introduced. Quickly and accurately identify the cause of abnormal sound, Verification of optimization results was completed. The paper provides a new method and idea for the cause and control of abnormal sound.