Vehicle active torque reduction method, system and device and storage medium thereof

Abstract

The invention provides a vehicle active torque reduction method, system and device and a storage medium thereof, and belongs to the technical field of vehicle use safety, and the vehicle active torque reduction method comprises the steps of obtaining wheel motion data; if the wheel motion data meet the preset motor galloping torque limiting enabling condition, preprocessing the wheel motion data; when the vehicle meets the preset open-loop condition or closed-loop condition, carrying out open-loop regulation and control or closed-loop regulation and control on the vehicle through the preprocessed wheel movement data, and calculating the motor galloping torque limiting maximum driving torque; and adjusting the motor torque request according to the motor galloping torque limiting maximum driving torque. And the phenomenon of shaft breakage caused by overlarge torque acting on the transmission shaft at the moment that the wheels are in contact with the ground after being emptied due to overlarge rotating speed rising of the motor is effectively reduced. The active torque reduction working condition is directly recognized through motor controller software, and the purpose of torque reduction of the driving shaft is achieved.

Description

technical field [0001] The present invention relates to the technical field of vehicle use safety, in particular to a vehicle active torque reduction method, system, device and storage medium thereof. Background technique [0002] When a pure electric vehicle passes the speed bump or passes through a pothole on the road, the wheels will take off for a short time due to the rapid increase in speed. The moment the wheels touch the ground, the friction resistance is very large, and the wheel speed is pulled back from the very high speed to the speed of the vehicle in an instant. relative to the rotational speed. At the moment of contact with the ground, the torque received by the transmission bearing is equal to the sum of the output torque of the motor wheel end and the frictional resistance of the ground. At this time, the vehicle may experience a torque greater than the design load requirement of the transmission shaft. In extreme cases, the transmission shaft may break The...

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Problems solved by technology

[0004] In view of the above shortcomings of the prior art, the purpose of the present invention is to provide a vehicle active torque reduction method, system, equipment and its storage medium, so as to improve the current electric vehicle under the condition of over-threshold, due to the long response execution time, resulting in After the wheel is vacated, it is easy to break the axle when it lands again

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