A vehicle decelerator fault identification method, vehicle control method and device

Abstract

The invention relates to a fault identification method of a vehicle reducer, a vehicle control method and a device, and belongs to the field of pure electric vehicle control. Wherein the fault identification method comprises the following steps: 1) detecting the torque and speed signal of the wheel motor, when the torque signal of the wheel motor is not zero but the speed signal is zero, and the torque of the wheel motor is greater than the corresponding driving resistance 2) When the speed difference of the wheel motors on both sides is greater than the calibration value, it is determined that the speed reducer on the side corresponding to the wheel motor with a higher speed is stuck. The reducer has a fracture failure. Obtain the torque, speed and motor torque signals corresponding to the driving resistance of each wheel motor, and quickly judge the fault of the vehicle reducer through the relationship between the signals, avoiding untimely and inaccurate identification by artificial means, and further Improve the safety of the vehicle.

Description

technical field [0001] The invention relates to a fault identification method of a vehicle reducer, a vehicle control method and a device, and belongs to the field of pure electric vehicle control. Background technique [0002] At present, while automobiles bring convenience to people, they also pollute the environment. The development of automobiles has caused excessive consumption of resources, and energy shortage is an increasingly serious problem facing all mankind. Compared with traditional fuel vehicles, new energy vehicles have advantages in energy saving, environmental protection, and post-maintenance, so they are widely used around the world and are an inevitable trend in the future development of the automotive industry. [0003] As a kind of new energy vehicles, pure electric vehicles have become the mainstream trend of the development of the automobile industry. The pure electric vehicle is driven by a motor, and the engine is canceled. From the characteristics ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a vehicle decelerator fault identification method to solve the current problem of untimely identification of deceleration faults caused by artificially identifying vehicle decelerator faults; at the same time, the present invention also provides a vehicle control method to solve The current control method directly shuts down when the reducer fails, and the vehicle cannot drive, resulting in inconvenient maintenance; at the same time, the present invention also provides a vehicle control device to solve the problem that the current control device directly stops when the reducer fails, and the vehicle cannot drive. Problems that make maintenance inconvenient

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