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Control method and control system for stability of electric four-wheel drive vehicle

A stable control method and four-wheel drive technology, which is applied to electric vehicles, control drives, vehicle components, etc., can solve problems such as understeer, oversteer, and vehicle instability, and achieve the effect of correcting deviations

Active Publication Date: 2013-07-03
BYD CO LTD
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  • Summary
  • Abstract
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  • Application Information

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Problems solved by technology

[0003] However, when the vehicle is running normally, it may slip due to the different road loads on the wheels, and oversteer and understeer may occur during the turning process. At this time, the vehicle cannot drive according to the driver's intention, and the vehicle will be in an unstable state. Seriously affect vehicle driving safety

Method used

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  • Control method and control system for stability of electric four-wheel drive vehicle
  • Control method and control system for stability of electric four-wheel drive vehicle
  • Control method and control system for stability of electric four-wheel drive vehicle

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Embodiment Construction

[0017] 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0018] In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than Nothing indicating or implying that a referenced device or elem...

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Abstract

The invention provides a control method and a control system for stability of an electric four-wheel drive vehicle. The method comprises the following steps: determining the current working condition of the electric four-wheel drive vehicle; detecting operating parameters of the electric four-wheel drive vehicle; and controlling four drive motors of the electric four-wheel drive vehicle according to the current working condition and the operating parameters. According to the control method and the control system for the stability of the electric four-wheel drive vehicle, torque adjustment is respectively performed on the four motors through the current working condition and the operating parameters, and therefore, the stability of the vehicle is effectively improved, and the safety performance of the vehicle is promoted.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an electric four-wheel drive vehicle stability control method and an electric four-wheel drive vehicle stability control system. Background technique [0002] At present, electric four-wheel independent drive vehicles use four motors to control one wheel respectively. The motor and the wheel are connected through a transmission. The output power of each motor can be controlled independently and the driver's operation signal and vehicle driving can be collected through a vehicle controller. The output power of the vehicle is calculated by the preset method and the output power of the four motors is distributed, and the motor controller receives the command signal of the vehicle controller to control the output of each motor. [0003] However, when the vehicle is running normally, it may slip due to the different road loads on the wheels, and oversteer and understeer may occur ...

Claims

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Application Information

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IPC IPC(8): B60L15/32B60L15/20
CPCY02T10/72
Inventor 张鑫鑫周旭光高锦龙许伯良
Owner BYD CO LTD
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