噪声与振动控制2019，Vol.39Issue(3)：133-137,198,6.DOI:10.3969/j.issn.1006-1355.2019.03.026
考虑声强测试网格的汽车雨刮器驱动系统噪声定位精度研究
Study on Noise Positioning Accuracy for Automotive Wiper Drive Systems considering Sound Intensity Test Grids
郭帅平 1廖子豪 2黄源 2宾光富1
作者信息
- 1. 湖南科技大学 机械设备健康维护湖南省重点实验室,湖南 湘潭 411201
- 2. 湖南科技大学 机电工程学院,湖南 湘潭 411201
- 折叠
摘要
Abstract
In order to solve the problem of noise control for a certain type of vehicle wiper drive systems, the influence of test grids of different sizes on the localization accuracy of noise sources is studied. First of all, the effective measurement area is selected according to the actual sizes of the drive motors and the combined components. Based on the basic principle that the measurement point should be as close as possible to the noise source position, and according to the actual microphone test conditions, three kinds of square test grids, 4.5 cm, 3 cm and 1.5 cm, are set up in the measurement area for the main noise source positioning. Furthermore, for studying the accuracy of the overall sound intensity distribution, the square test grid with size of 1cm is used in the measurement area. Using B&K sound test equipment and its system and discrete point measurement method, the sound intensity at each grid node is tested, the sound intensity cloud diagram and the sound intensity three-dimensional diagram are obtained and the noise source is located. The results show that the square grid of 4.5 cm has the lowest positioning accuracy, and the grid of 1.5 cm has high accuracy, but the measurement period is long and the operation is cumbersome. The grid of 3cm can realize the source positioning quickly and accurately, and its comprehensive effect is the best. Based on the test grid with a size of 1.0 cm and combined with the dangling needle assisted positioning method, the overall sound intensity distribution of the vehicle wiper drive system can be obtained accurately.关键词
声学/声强测试/声源定位/网格尺寸Key words
acoustics/ sound intensity test/ source localization/ grid size分类
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郭帅平,廖子豪,黄源,宾光富..考虑声强测试网格的汽车雨刮器驱动系统噪声定位精度研究[J].噪声与振动控制,2019,39(3):133-137,198,6.
