<正>以大客车为研究对象，从指导汽车维修角度建立了前轮定位参数影响作用的汽车前轮摆振数学模型，以前轮定位参数对汽车前轮摆振影响进行数值计算。路试和汽车修理实践验证了研究结果的正确性。研究结果对排除非独立悬架汽车前轮摆振故障具有指导作用。

There are many factors of effect on the front wheel shimmy of motorbus,especially the front wheel alignment parameters have important effect on front wheel shimmy. Mathematical model of front wheel shimmy for motorbus, including main effect of front wheel alignment parameters, has been established. The digital calculation has been made to estimate the effect of front wheel alignment pa- rameters on shimmy. The correctness of research result has been verified from road test and motorbus repairing. The result in this paper can be used to guide fixing the breakdown related front wheel shim- my for motor vehicle with dependent suspension.