Abstract: In order to increase the uniformity of vibration amplitude of vibratory wheel of vibratory roller and improve its compaction performance and handling stability, vibratory wheel polarization mathematical model was established in the condition of simulating practical compaction environment. Furthermore, based on MATLAB/Simulink, the influences of vibratory wheel center, frame center, absorber parameters on uneven amplitude were analyzed. The results show that the surface of vibratory wheel center in which the exciting force act is coincided with the center of vibratory wheel is the main factor to cause the uneven amplitude of vibratory roller, and the influences of frame center, absorber parameters on uneven amplitude are relatively small. If design and manufacture deviation is controlled strictly, the coincidence degree between vibratory wheel center and the surface of the exciting force act will be increased. Meanwhile, the phenomenon of uneven vibration amplitude of vibratory wheel will be improved.

Key words: vehicle engineering;vibratory roller, exciting force, uneven vibration amplitude, handling stability

摘要： 为提高振动压路机振动轮两侧振幅的均匀性，改善其压实、操纵稳定性能，在模拟振动压路机实际工作环境的工况下，建立了振动轮振动的偏振数学模型 ，并基于MATLAB/Simulink仿真，分析了振动轮质心、车架质心、减振器参数对振幅不均匀性的影响。结果表明：振动压路机振动轮的激振力作用中心面与振动轮 质心的重合度是影响振动轮两侧振幅不均匀的主要因素，车架质心位置、减振器参数对振动轮振幅的不均匀性影响较小；严格控制设计与制造偏差，可提高振动 轮质心与激振力作用中心面的重合程度，改善振动轮振幅不均匀的现象。

关键词: 车辆工程, 振动压路机, 激振力, 振幅不均匀性, 操纵稳定性