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对高速公路合理限速值的确定方法进行了研究,以多体动力学仿真软件ADAMS为平台,建立了车辆模型、道路模型、车-路耦合模型、车辆行驶过程仿真试验模块和车辆安全状态识别模块,并开发了高速公路车-路条件下安全速度仿真识别系统。运用该系统对车辆在弯道与下坡路段的行驶状况进行了虚拟仿真分析。试验结果表明:车辆在弯道与下坡路段的安全行驶极限速度仿真结果与标准标定的运行速度的相对误差为1.05%~3.80%,该仿真识别系统可行。
The method to determine the reasonable speed limit of expressway is studied. Based on the ADAMS software, a vehicle model, a road model, a vehicle-road coupling model, a vehicle running simulation test module and a vehicle safety status identification Module, and developed a safety-speed simulation system for highway-road conditions. The system is used to simulate the driving conditions of the vehicle in corners and downhill sections. The test results show that the relative error between the simulation results of the safe driving speed and the standard operating speed of the vehicle is 1.05% ~ 3.80%. The simulation system is feasible.