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Automobile and electronic differential control method and control device thereof

An electronic differential control, automotive technology, applied in the automotive field, can solve the problems of uncontrollable, large electronic differential error, etc., and achieve the effect of good differential effect.

Active Publication Date: 2020-05-19
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This will cause the electronic differential to produce the required differential effect at the beginning, but the error of the electronic differential of the car will become larger and larger at the end, and finally an uncontrollable situation will appear

Method used

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  • Automobile and electronic differential control method and control device thereof
  • Automobile and electronic differential control method and control device thereof
  • Automobile and electronic differential control method and control device thereof

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Embodiment Construction

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0031] The electronic differential speed control method of the automobile, the electronic differential speed control device of the automobile and the automobile proposed by the embodiments of the present invention are described below with reference to the accompanying drawings.

[0032] figure 1 It is a flow chart of an electronic differential control method for a vehicle according to an embodiment of the present invention. Such as figure 1 As shown, the electronic differential control method may include the following steps:

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PUM

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Abstract

The invention discloses an automobile and an electronic differential controlling method and device thereof. The electronic differential controlling method comprises the following steps that the rotating speeds of a left driving wheel and a right driving wheel of the automobile are correspondingly detected when the automobile turns, and the ratio of the rotating speed of the left driving wheel to the rotating speed of the right driving wheel is calculated; whether the ratio of the rotating speed is equal to the ratio of the turning radius of the left driving wheel to the turning radius of the right driving wheel or not is judged; and if the fact that the ratio of the rotating speed is not equal to the ratio of the turning radius, the torque distribution coefficients on a left hub and a right hub are adjusted, so that the ratio of the rotating speed is equal to the ratio of the turning radius. The electronic differential controlling method adopts closed-loop control, when the automobileencounters operating conditions such as turning and skidding, the torque distribution coefficients of the left hub and the right hub are changed in real time, so that the ratio of the rotating speed meets the ratio of the turning radius, and the automobile can achieve the better differential effect.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an automobile electronic differential speed control method, an automobile electronic differential speed control device and an automobile. Background technique [0002] The electronic differential is mainly a set of power solutions for the vehicle driven by the hub motor. When the vehicle encounters turning, slipping and other working conditions, it can respond quickly and make a reasonable torque distribution to the left and right hubs. [0003] In related technologies, the torque distribution coefficients of the left and right hubs are mainly calculated according to the ratio of the turning radius of the left drive wheel and the right drive wheel, that is, the torque relationship to be distributed is: Among them, T1 and T2 are the torques of the left and right driving wheels respectively, n1 and n2 are the rotational speeds of the left and right driving wheels, and R1 and R...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20B62D11/04B62D6/00B62D137/00
CPCY02T10/72
Inventor 刘威梁岂源张鑫鑫
Owner BYD CO LTD
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