Steering auxiliary torque control method for pure electric all-wheel-drive automobile

A steering assist and torque control technology, applied in the direction of electric steering mechanism, etc., can solve the problem that the vehicle is difficult to rotate in situ, and achieve the effect of improving the passing performance and off-road escape ability.

Active Publication Date: 2022-04-05
JIANGLING MOTORS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims at the problem in the prior art that it is difficult for the vehicle to rotate in situ, and proposes a steering assist torque control method for pure electric all-wheel drive vehicles

Method used

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  • Steering auxiliary torque control method for pure electric all-wheel-drive automobile
  • Steering auxiliary torque control method for pure electric all-wheel-drive automobile
  • Steering auxiliary torque control method for pure electric all-wheel-drive automobile

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Embodiment Construction

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will combine the appended Figure 1-3 , clearly and completely describe the technical solutions in the embodiments of the present invention, obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0026] A method for controlling steering assist torque of a pure electric all-wheel drive vehicle, comprising the steps of:

[0027] S1. Determine whether there is a request to turn on the steering assist mode through the steering assist mode switch, if not, then end, and if so, go to step S2;

[0028] S2. Obtain the left front wheel speed, right front wheel speed and left ...

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Abstract

The invention relates to the field of electric vehicle control, in particular to a pure electric all-wheel-drive vehicle steering auxiliary torque control method, which utilizes the characteristic that a front-rear dual-motor electric vehicle can independently control the front-rear power output direction and the output torque, locks an inner side front wheel and an outer side rear wheel during steering, and applies a forward torque to the outer side front wheel, so that the front-rear power output direction and the output torque are controlled. And reverse torque is applied to a rear wheel on the inner side, so that the vehicle approximately rotates around the mass center in situ, the turning radius is shortened to be 1/2 of that of a crossed shaft, and the passing performance and cross-country escape capacity of the vehicle are further improved.

Description

technical field [0001] The invention relates to the field of electric vehicle control, in particular to a method for controlling steering assist torque of a pure electric full-drive vehicle. Background technique [0002] In order to adapt to complex terrain conditions and harsh road conditions, current off-road vehicles generally adopt the drive form of all-wheel drive (four-wheel drive), that is, all wheels can provide power. In order to achieve all-wheel drive, the power generated by the engine of a traditional fuel vehicle is distributed to the four wheels through the power transmission of the clutch mechanism, gearbox, and transfer case. The form of all-wheel drive for electric vehicles is relatively simple, and the drive system layout of independent motors for the front and rear axles is generally adopted. The front axle motor drives the front wheels, and the rear axle motor drives the rear wheels. Compared with fuel vehicles, the front and rear power systems are inde...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04
CPCY02T10/72
Inventor 王功博魏广杰游道亮韩雪雯胡会永刘文冰
Owner JIANGLING MOTORS
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