Stability control method and system for electric automobile with four independently driven wheels

A four-wheel independent drive, stability control technology, applied in the field of safe assisted driving and intelligent control

Inactive Publication Date: 2016-06-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problem of the accuracy of stability region discrimination and the problem of torque distribution in the prior art,...

Method used

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  • Stability control method and system for electric automobile with four independently driven wheels
  • Stability control method and system for electric automobile with four independently driven wheels
  • Stability control method and system for electric automobile with four independently driven wheels

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Embodiment Construction

[0106] In order to make the technical problem solved by the present invention, the adopted technical scheme and the achieved technical effect clearer, the present invention will be further described in detail with examples below. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0107] This embodiment proposes a stability control method for a four-wheel independent drive electric vehicle, using a stability discrimination module to control the four-wheel independent drive electric vehicle, the stability control system includes an upper stability determination module, a middle ideal Longitudinal force and yaw moment calculation module, lower optimal moment distribution module.

[0108] 1. Upper layer stability judgment module

[0109] Described upper level stability discrimination module comprises phase diagram discrimination stability module and safe speed area discrimi...

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Abstract

The invention discloses a stability control method for an electric automobile with four independently driven wheels. Stability is judged by jointly utilizing a phase diagram and a safe speed zone, and whether the current running state of an automobile is stable or not is accurately judged in real time. At the same time, the invention provides a stability control system for the electric automobile with the four independently driven wheels. Four wheel independent driving systems and four wheel independent brake systems of an electric automobile with four independently driven wheels are comprehensively controlled by utilizing an optimal moment distribution method, so that four wheels work in a more coordinated manner. The accuracy and the practicability of a stability controller on the electric automobile with the four independently driven wheels are improved.

Description

technical field [0001] The invention relates to the field of safety assisted driving and intelligent control, in particular to a stability control method and system for a four-wheel independently driven electric vehicle. Background technique [0002] Automobile stability control is developed on the basis of ABS. In traditional automobiles, it mainly works under the extreme conditions of lateral acceleration or side slip angle, and uses the yaw couple generated by the difference between the braking forces on the left and right sides. torque to prevent uncontrollable sideslips. The four-wheel independent drive electric vehicle is one of the research hotspots in the field of pure electric vehicles at home and abroad. Its main feature is that the torque of the four wheels can be independently distributed. This independent drive mode has brought new innovations to the vehicle stability control system. design ideas. [0003] Aiming at the stability control problem of four-wheel ...

Claims

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Application Information

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IPC IPC(8): B60W10/08B60W10/18B60W30/02B60W40/00B60W40/112
CPCB60W10/08B60W10/18B60W30/02B60W40/00B60W40/112B60W2520/20B60W2710/08B60W2710/18
Inventor 郭烈林肖张春初乔彦夫李琳辉赵一兵
Owner DALIAN UNIV OF TECH
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