张贵辉,李健,石磊,陈闯,马俊明,孙洪明.某汽车传动系扭振测试、诊断与数据处理分析[J].,2024,43(2):293-300 |
某汽车传动系扭振测试、诊断与数据处理分析 |
Torsional vibration test, diagnosis and data analysis of a vehicle driveline system |
投稿时间:2022-10-08 修订日期:2024-03-06 |
中文摘要: |
本文针对某轻型卡车由于传动系扭振导致加速过程中驾驶室内出现异常振动与轰鸣噪声现象进行研究。首先,为弄清车内振动噪声产生机理,对整车的扭振和车内振动噪声进行了实车道路试验;其次,对整车试验异常数据进行后处理,通过低通滤波和设置电压波动缓冲区的方法对其进行去噪和再生成,消除了加速工况下转速曲线失速和异常峰值的现象;最后,通过分析转速、振动和噪声数据得出:样车加速过程中发动机2阶激励频率达到整车传动系的固有频率时,引起了传动系扭转共振,连同传动轴的不平衡转动自振,通过悬置、中间支撑和后桥板簧传入到车内,引起驾驶室异常振动和轰鸣噪声。 |
英文摘要: |
The abnormal vibration and booming noise excited by the driveline in the cab of a light truck during acceleration are studied in this paper. Firstly, the torsional vibration of transmission system, noise and vibration in the vehicle are tested in order to understand the generation mechanism of them in the vehicle. Secondly, the causes of stall and abnormal peak in the speed curve under the condition of acceleration are studied, and the data are denoised and regenerated by means of low-pass filtering and setting voltage fluctuation buffer region. Finally, the test data are analyzed, and it is found that torsional resonance occurs when the second order excitation frequency of the engine reaches the natural frequency of the vehicle driveline during the acceleration process. In addition, there is the problem of unbalanced rotation of the transmission shaft. These vibrations are transmitted into the vehicle through the suspension, intermediate support and rear axle leaf spring, causing abnormal vibration and roaring noise in the cab. |
DOI:10.11684/j.issn.1000-310X.2024.02.006 |
中文关键词: 轰鸣噪声 传动系 扭振 数据处理 整车试验 |
英文关键词: Booming noise Driveline Torsional vibration Data processing Vehicle test |
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