基于车辆振动加速度响应的路面识别研究

分别在土路与公路两种路况下,对试验测试得到的车辆振动加速度响应分别从相关性、频域、时域进行信号分析,并对试验条件下的响应信号功率谱密度按照最大峰值进行归一化处理,进而提出路面识别算法。结果表明:路面识别算法可以在一定程度上对路面的频率结构作定性的判断;车辆振动加速度响应信号体现路面不平度特征的信息;分析结论能为路面识别的研究提供参考。

Research on Road Identification Based on Vehicle Vibration Acceleration Response

The acceleration response signal of vehicle vibration was proposed to be the carrier of the road surface roughness information innovatively.The signal analysis was made to the acceleration response of vehicle vibration respectively from relativity,frequency domain and time domain under land road and pavement road situations,and the normalized processing was carried on to the power spectral density(PSD) of response signals according to the maximal peak value under the test condition,moreover the algorithm of the road identification was put forward.The results show that the algorithm of the road identification may make qualitative judgments to the frequency structure of the road to a certain extent,and the acceleration response signal of vehicle vibration reflects the information of road roughness features.The references for the study of the road identification can be provided from the analysis conclusions.