Methods of Signal Pre-Processing in Mass Road Surface Measurement Data
Duan Huming1,3; Xie Fei2 ; Zhang Kaibin2; Ma Ying2 ; Shi Feng2
1. Post-Doctoral Research Center of China Automotive Engineering Research Institue, Chongqing 400039; 2. China Automotive Engineering Research Institue, Chongqing 400039; 3. College of Automotive Engineering of Tongji University, Shanghai 201804
Abstract：It’s reviewed that the components of measurement system of road surface data and measurement methods of road surface profile in automotive test. Based on the mass road surface measurement data, some signal pre-processing methods are proposed, including the identification and correction of abnormal errors, the extraction of signal trends, the smooth connection of segment road surface measurement data, the randomness test of road surface measurement data and the processing of road surface measurement data at the moment of speed anomaly. After the introduction of these methods principle and algorithm, several actual measurement road data as examples, they show that the results of calculation and processing are significant. The test analysis and comparison results show that these methods of signal pre-processing of road surface measurement data are simple and has obvious effect. These methods of signal pre-processing can be widely applied to road surface data processing and other engineering vibration signals processing.
2011, Vol. 30 
