1results about How to "Smooth torque" patented technology

The present application relates to the technical field of vehicles and discloses a motor torque zero-crossing control method and device, a vehicle, electronic equipment and a medium. The method controls the motor of the vehicle to output positive and negative periodic torques for multiple test periods when the wheels of the vehicle are in a braking stationary state, so that the gear performs different side-tooth movements, the mechanical angle of the motor rotor is monitored, the periodic transmission system gap is determined, the average transmission system gap is matched to obtain a target torque gradient correction value, the current torque zero-crossing gradient of the vehicle is determined based on the target torque gradient correction value and a preset basic zero-crossing torque gradient value, the torque of the motor of the vehicle is controlled to zero-cross, and the current torque zero-crossing gradient of the vehicle is corrected at different times in the life cycle of the vehicle. The adaptability of the current torque zero-crossing gradient to the vehicle is ensured, the zero-crossing abnormal sound problem of the vehicle is reduced, and the smoothness of the output torque of the power system of the vehicle is improved.