汽车NVH 试验评价SH .pdf

汽车NVH 试验评价方法 NVH Assessment Methods for Vehicle 张满良 TS 2011.09 Shanghai Outline 目录  Introduction 引言  Automotive NVH concerns 汽车NVH 关注点  Test Assessment condition 评价条件  NVH objective measurement 客观测试  NVH Case 案例  Summary and Suggestion 总结与建议 Introduction 引 言  Customer requirement 用户要求  Market competition 市场竞争  Product performance 产品性能水平提升 Introduction 引 言 NVH evaluation roles during product development and DVP process 评价的作用贯穿于整个产品开发和验证过程中  Benchmarking 对标分析  Troubleshooting 问题诊断  DVP 产品验证 Introduction 引 言 NVH assessing Methods 评价方法 • Subjective evaluation 主观评价 • Objective evaluation 客观测试 • CAE simulation CAE 评价 • Sound Quality 声音品质评价 Automotive NVH concerns 汽车NVH 关注点  Concerns for Customer 用户的关注点  Concerns for professional 专业人士的关注点  Concerns for product competition 产品竞争需要的关注点  Concerns for Product performance enhancement 性能提升需要的关注点 Automotive NVH concerns 汽车NVH 关注点 Body System 车身系统  “boom”  Instrument panel Vibration/shake 仪表板振动/ 抖动  Steering wheel Vibration/shake 方向盘振动/ 抖动  Driver Seat Vibration 座椅振动  Electro-mechanical noise (seat adjusters, power windows, power locks, windshield wipers) 机- 电系统噪声（座椅调节器、电动窗户、雨刮器、各种小 电机等）  HVAC noise 空调暖风系统噪声  Exterior noise reduction车外噪声  Wind noise 风噪声