The calculation methods of vehicle speed under different road conditions are studied for evaluating the maneuverability of off-road vehicles. The calculation models for vehicle speed with the parameters of vehicle structures and road conditions are established by analyzing the force bearing features of vehicle in driving under different typical road and traffic conditions, and the calculations and corresponding tests are conducted. The results show that the calculated results well agree with test data in all road conditions, meaning that the models set up can accurately represent the real driving speed, and hence providing a base for evaluating the mobility of vehicles.%为评价越野车辆的机动性能,研究了在不同路面状况下车速的计算方法.通过分析不同典型路况下车辆行驶时的受力特征,建立了包括车辆结构和路面状况参数的车辆速度计算模型,进行了计算和相应的试验.结果表明,在各种路况下的计算值都与试验值保持良好的一致性,说明应用建立的模型能较准确地反映汽车的行驶速度,为评价车辆的机动性能提供依据.
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