Electric automobile and bend automobile speed control method and system thereof

A technology for electric vehicles and vehicle speed control, which is applied in the direction of electric vehicles, control drives, control devices, etc., and can solve problems such as failure to meet actual needs and different adhesion coefficients

Active Publication Date: 2016-11-23
BEIJING ELECTRIC VEHICLE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, when the weather conditions are different, even the same vehicle has different adhesion coefficients, especially in rainy or snowy days, this control strategy will not be able to meet the actual needs

Method used

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  • Electric automobile and bend automobile speed control method and system thereof
  • Electric automobile and bend automobile speed control method and system thereof

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Embodiment Construction

[0026] 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.

[0027] The electric vehicle and its curve speed control method and system according to the embodiments of the present invention are described below with reference to the accompanying drawings.

[0028] figure 1 It is a flow chart of a curve speed control method for an electric vehicle according to an embodiment of the present invention. like figure 1 As shown, the curve speed control method of the electric vehicle comprises the following steps:

[0029] S1, obtaining the road information ahead of the electric vehicle, and obta...

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Abstract

The invention discloses an electric automobile and a bend automobile speed control method and system thereof. The method includes the following steps that front road information of the electric automobile and weather condition information are obtained; when the electric automobile makes a turn, the steering angle of the electric automobile is obtained, the bend traveling limiting automobile speed of the electric automobile in the turning process is obtained according to the steering angle, the front road information and the weather condition information, and whether the bend traveling limiting automobile speed is smaller than the current traveling automobile speed of the electric automobile or not is judged; and if the bend traveling limiting automobile speed is smaller than the current traveling automobile speed of the electric automobile, torque feedback control is conducted on a drive motor of the electric automobile so that the traveling automobile speed of the electric automobile can be limited. By the adoption of the method, the bend traveling limiting automobile speed of the automobile in the turning process is obtained through the front road information, the weather condition information and the steering angle of the automobile in the turning process, so that the bend traveling limiting automobile speed of the automobile further accords with the actual condition, and driving safety is facilitated.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to an electric vehicle and a curve speed control method and system thereof. Background technique [0002] When the vehicle is driving on the expressway or urban ring road, due to the relatively high speed, the driver will oversteer or understeer when performing the steering operation of the vehicle, resulting in sideslip or rollover, which brings safety hazards. [0003] At present, the curve speed control is generally calculated based on body sensors and road information to determine whether the vehicle is in the rollover critical area. [0004] In the related technology, the vehicle-mounted automatic control system is used to control the vehicle. First, the curvature information of the curve is obtained and converted into a digital signal to be input to the vehicle-mounted microprocessor. The current vehicle speed is obtained, and then the safety state judgment module judges ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L2240/12B60L2240/24B60L2240/423B60L2240/622B60L2240/64B60L2240/642B60L2240/645B60L2240/66Y02T10/72
Inventor 柯南极张玉良饶淼涛闫伟静李媛
Owner BEIJING ELECTRIC VEHICLE
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