Commercial vehicle weight estimation method and device and storage medium

The invention relates to a commercial vehicle weight estimation method and device and a storage medium, and relates to the technical field of vehicle weight estimation. According to the method, the vehicle driving resistance is fitted according to the driving data meeting the set vehicle conditions; the friction torque of an engine is calculated according to the driving data meeting the set vehicle conditions and the static parameters of the vehicle, and the torque value of the hydraulic retarder is obtained from the driving data; further establishing a driving equation for describing the relationship among the vehicle mass, the torque value of the hydraulic retarder, the friction torque of the engine, the inertial resistance, the air resistance, the rolling resistance and the slope resistance; and converting the driving equation into a least square form, and substituting the least square form into a recursive least square algorithm formula to obtain a vehicle weight estimation recursive formula to calculate