基于频率切片算法的风振测试方法  

Buffeting Test Method Based On Frequency Slicing Algorithm

作　　者：周万田 江财茂 龙良活 ZHOU Wan-tian;JIANG Cai-mao;LONG Liang-huo(GAC Automotive Research&Development Center,Guangzhou 511434,China)

机构地区：[1]广州汽车集团股份有限公司汽车工程研究院,广州511434

出　　处：《汽车科技》2022年第5期42-45,41,共5页Auto Sci-Tech

摘　　要：通过分析一般乘用车风振发生的机理、过程,并结合次声对人体影响的研究结果,提出了采用风振声压级评价风振的单参数工程评价方案。提出采用频域切片算法求解风振声压级的数据处理方案,并基于此优化了风振的测试方法。最后分析了优化方法相对传统风振测试方法的高效率和高精度,以及更能反映风振动态过程的特点。By analyzing the mechanism and process of buffeting of passenger cars,and combining with the research results of the influence of infrasound on human body,a single parameter engineering evaluation scheme using buffeting amplitude value to evaluate buffeting is proposed.The data processing scheme of solving buffeting sound pressure level by frequency domain slicing algorithm is proposed,and the test method of buffeting is optimized based on this.Finally,the high efficiency and high precision of the optimization method compared with the traditional buffeting test method,and the characteristics of better reflecting the dynamic process of buffeting are analyzed.

关 键 词：风振 次声危害 频率切片 噪声测试 

分 类 号：U467.5[机械工程—车辆工程]