电动助力转向系统NVH特性数据采集与性能评价
2024-05-21杨金广蒋萍于刚张晴
杨金广 蒋萍 于刚 张晴



文章编号:1671-3559(2024)03-0350-06DOI:10.13349/j.cnki.jdxbn.20240311.001
摘要: 针对汽车电动助力转向系统NVH特性数据存在多点位异步采样误差较大, 且选取性能评价依据单一的问题, 设计一种二十四通道NVH特性数据同步采集与多角度特性分析系统; 采用多个数据采集模块联结、 同步动态随机存储器读写、 高速串行计算机扩展总线融合的方式, 实现二十四通道NVH特性数据的同步精确采集与快速传输; 从机械性能与声振特性方面对电动助力转向系统NVH特性进行多角度分析与评价。 结果表明, 与传统测试方法相比, 所提方法可实现多点位同步高精度采样与多角度信号时频域分析, 每个通道数据采集速率可达200 kHz/s, 时频域分析依据更丰富、 更全面。
關键词: 电动助力转向系统; NVH特性; 数据采集; 性能评价
中图分类号: TP29; U467
文献标志码: A
开放科学识别码(OSID码):
Data Acquisition and Performance Evaluation of
NVH Characteristics of Electric Power Steering System
YANG Jinguanga, JIANG Pinga, b, YU Ganga, ZHANG Qingb
(a. School of Electrical Engineering, b. School of Information Science and Engineering,
University of Jinan, Jinan 250022, Shandong, China)
Abstract: To solve the problem that NVH characteristics data of automotive electric power steering system had a large multi-point asynchronous sampling error and the performance evaluation basis was single, a 24-channel synchronous data acquisition of NVH characteristics and multi-aspect characteristic analysis system was designed. By means of connecting multiple data acquisition modules, reading and writing by synchronous dynamic random-access memory, and fusing peripheral component interconnect express, the synchronous, accurate acquisition and fast transmission of 24-channel NVH characteristics data were realized. The NVH characteristics of electric power steering system were analyzed and evaluated from the aspects of mechanical property and noise and vibration characteristics. The results show that compared with the traditional test methods, the proposed method can realize multi-point synchronous high-precision sampling and multi-aspect signal time-frequency domain analysis, and the data acquisition rate of each channel can reach 200 kHz/s, and the time-frequency domain analysis basis is richer and more comprehensive.
Keywords: electric power steering system; NVH(noise-vibration-harshness) characteristics; data acquisition; performance evaluation
汽车的噪声(noise)、 振动(vibration)和声振粗糙度(harshness)统称为汽车的NVH特性,是衡量现代汽车制造工艺水平的一个综合性指标。全球知名车辆品质评价公司J.D.Power评估车辆质量性能指
收稿日期: 2023-04-03 网络首发时间:2024-03-11T15:02:04
基金项目: 国家自然科学基金项目(62271230)
第一作者简介: 杨金广(1998—),男,山东泰安人。硕士研究生,研究方向为智能信息处理。E-mail:2660166344@qq.com。
通信作者简介: 蒋萍(1980—),女,山东菏泽人。教授,博士,硕士生导师,研究方向为智能信息处理。E-mail:cse_jiangp@ujn.edu.cn。
网络首发地址: https://link.cnki.net/urlid/37.1378.N.20240311.0949.002
标中有近1/3的质量要求与车辆的NVH特性直接相关[1],汽车的NVH特性成为区分汽车品牌优劣的重要标准之一。汽车整车由多个复杂系统组成,且各个系统具有其独特的NVH特征,整车NVH特性研究较为复杂,通常把整车NVH特性分成多个子系统分别进行研究,主要集中在动力总成悬置NVH特性、 变速器振动噪声、 制动振动噪声等方面。……