Vehicle mass identification method based on tire model and tire model generation method

• Main Authors: MA PENGTAO, ZHANG TIANLEI
• Format: Patent
• Language: Chinese; English
• Published: 25.12.2020
• Subjects: CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; PERFORMING OPERATIONS; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT; TRANSPORTING; VEHICLES IN GENERAL

The invention provides a vehicle mass identification method based on a tire model and a tire model generation method, and relates to the technical field of unmanned driving. The vehicle mass identification method based on the tire model comprises the steps that the tire slip rate, speed and acceleration of a vehicle and the gradient of the road surface where the vehicle is located are acquired; the tire slip rate, the speed, the acceleration and the gradient are input into the tire model to obtain the mass of the vehicle, wherein the tire model is used for indicating the relationship among thetire slip rate, the mass, the speed and the acceleration of the vehicle, the gradient of the road surface and the comprehensive coefficient of air resistance. By newly establishing the tire model, signals such as the rotating speed and the torque of a power source do not need to be obtained, only the tire slip rate, the speed and the acceleration of the vehicle and the gradient of the road surface where the vehicle is lo