A method for active control of vehicle turning

An active control and vehicle technology, applied to vehicle components, steering mechanisms, transportation and packaging, etc., can solve problems such as obstacles or pedestrian collisions, misjudgment, and invisibility, and achieve precise and simple methods, collision avoidance, and timely control moving effect

Active Publication Date: 2020-03-24
ZHEJIANG CRRC ELECTRIC VEHICLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When the vehicle is turning, due to the blind area of ​​vision, especially for large vehicles, it is easy to fail to see the obstacle information on the side when turning, resulting in the risk of collision with obstacles or pedestrians when the vehicle is turning;
[0003] In addition, when the vehicle is turning, due to the driver's misjudgment, he misjudges that the vehicle will not collide with the obstacle on the side of the vehicle when turning, and continues to drive, causing the vehicle to hit the obstacle on the side.

Method used

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  • A method for active control of vehicle turning
  • A method for active control of vehicle turning
  • A method for active control of vehicle turning

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Effect test

Embodiment 1

[0054] This embodiment provides a method for active control of vehicle turning, such as Figure 1 to Figure 6 As shown, the method includes the steps of:

[0055] S1: Obtain the turning angle of the vehicle turning;

[0056] S2: Correspondingly control the turning speed of the vehicle according to the current turning angle of the vehicle;

[0057] S3: Obtain the obstacle position information within the preset range of the vehicle through the obstacle recognition sensor 30 installed at the preset position of the vehicle;

[0058] S4: Calculate the predicted trajectory of the vehicle according to the preset trajectory algorithm according to the turning angle of the vehicle;

[0059]S5: Determine whether the obstacle position information within the preset range of the vehicle is within the calculated predicted trajectory of the vehicle; if so, calculate the preset safe running acceleration of the vehicle according to the preset speed algorithm according to the obstacle position...

Embodiment 2

[0104] This embodiment provides a system for active control of vehicle turning, such as Figure 5As shown, the system used for the active control of vehicle turning includes:

[0105] The steering wheel angle sensor 10 is used to obtain the rotation angle of the steering wheel;

[0106] The turning speed control module 20 is used for correspondingly controlling the turning speed of the vehicle according to the driving speed of the current vehicle and the turning angle;

[0107] Obstacle recognition sensor 30, used to obtain obstacle position information within the preset range of the vehicle;

[0108] The vehicle track calculation module 40 is used to calculate and obtain the steering angle of the left front wheel and the right front wheel of the vehicle according to the rotation angle of the obtained steering wheel, and obtain the steering angle of the current vehicle according to the obtained steering angle of the left front wheel and the right front wheel of the vehicle. ...

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Abstract

The invention belongs to the technical field of automatic control of electric vehicles, and provides a method for active control of vehicle turning, which is used to solve the problem that current vehicle turning cannot actively limit speed and avoid obstacles. The method includes: S1: Acquiring vehicle turning information Turning angle; S2: Corresponding to control the turning speed of the vehicle; S3: Obtain the obstacle position information within the preset range of the vehicle through the obstacle recognition sensor installed at the preset position of the vehicle; S4: Calculate the predicted trajectory of the vehicle; S5: Judge the vehicle Whether the obstacle position information within the preset range is within the calculated preset trajectory of the vehicle; if yes, calculate the preset safe running acceleration of the vehicle according to the preset speed algorithm, and control the vehicle to stop within the preset safe range; if not, continue Control the driving of the vehicle. Compared with the prior art, the present invention has the advantage of being able to avoid the risk of collision with obstacles according to the predicted driving trajectory of the vehicle.

Description

technical field [0001] The invention belongs to the field of automatic control of electric vehicles, and in particular relates to a method for active control of vehicle turning. Background technique [0002] When the vehicle is turning, due to the blind area of ​​vision, especially for large vehicles, it is easy to fail to see the obstacle information on the side when turning, which may cause the danger of collision with obstacles or pedestrians when the vehicle is turning; [0003] Also have vehicle when turning, because the driver misjudged, misjudged that vehicle would not collide with the obstacle on the side of the vehicle when turning, and continued to drive, causing the vehicle to run into the obstacle on the side. [0004] Therefore, it is necessary to design a method for solving the problem of how to prevent the vehicle from encountering obstacles within the preset safety range when turning, and a method for actively controlling the turning of the vehicle. Content...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D15/02B60W30/09
CPCB60W30/09B62D15/025
Inventor 胡远敏何安清黄帅颜祺宇孙亮宏
Owner ZHEJIANG CRRC ELECTRIC VEHICLE CO LTD
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