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Rear wheel steering control method and device, control unit, vehicle and storage medium

A technology of rear wheel steering and control method, applied in the fields of vehicles, storage media, devices, and rear wheel steering control methods, can solve problems such as bumping accidents, loss of rear wheel steering system and reducing turning radius, etc., so as to achieve safe departure. , the effect of improving comfort

Active Publication Date: 2022-04-12
CHINA FIRST AUTOMOBILE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]Figure 1 is a schematic diagram of front and rear wheel steering when the vehicle is driving off the road, such as As shown in Figure 1, when the vehicle wants to drive away from the roadside parking space, if the vehicle is close to the front and rear distances and the curbstone, and the curbstone is high, if there is no configuration Wheel steering, the steering wheel is turned to the limit, the front wheel has the largest turning angle, so that the vehicle drives away according to the minimum turning diameter; if the rear wheel steering is configured, the rear wheels will steer out of phase with a certain proportion of the front wheel turning angle, and the minimum turning diameter will appear at this time. It is convenient for the vehicle to drive away, but the rear of the vehicle will move toward the curb along the track of the rear wheels, which is prone to collision accidents
[0004] Some car companies put forward the requirement that the rear wheel steering function be disabled when the vehicle leaves the parking space, thus losing the advantage of the rear wheel steering system in reducing the turning radius

Method used

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  • Rear wheel steering control method and device, control unit, vehicle and storage medium
  • Rear wheel steering control method and device, control unit, vehicle and storage medium
  • Rear wheel steering control method and device, control unit, vehicle and storage medium

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Experimental program
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Effect test

Embodiment 1

[0047] figure 2 It is a flow chart of a rear wheel steering control method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation that the vehicle drives away from the roadside, for example, the vehicle starts from the roadside, or drives out of the parking space, etc., wherein the vehicle One side is an obstacle, such as a curb, a wall, a green belt, or an incompressible solid line. The method can be executed by a rear wheel steering control device, which can be realized by software and / or hardware and integrated in the vehicle. like figure 2 As shown, the method specifically includes the following steps:

[0048] S110. Obtain steering information;

[0049] Wherein, the steering information can refer to the information that affects the steering control of the vehicle, including the steering wheel angle (and / or the front wheel angle, the front wheel angle is proportional to the steering wheel angle), vehicle speed, the distance b...

Embodiment 2

[0108] Figure 7 It is a flow chart of a rear wheel steering control device provided in Embodiment 2 of the present invention. This embodiment is applicable to the situation that the vehicle drives off the roadside, and can execute the rear wheel steering control method provided in any embodiment of the present invention. The corresponding functional modules and beneficial effects of the execution method.

[0109] like Figure 7 As shown, the rear wheel steering control device includes: an acquisition module 310 , a mode determination module 320 and a control module 330 .

[0110] An acquisition module 310, configured to acquire steering information;

[0111] The mode determination module 320 is used to determine the control mode of the rear wheel steering according to the steering information. The control mode includes a normal mode, an adaptation mode or a catch-up mode, and the steering coefficients corresponding to the normal mode, the adaptation mode and the catch-up mo...

Embodiment 3

[0130] Figure 8 A schematic structural diagram of a control unit provided by Embodiment 3 of the present invention, such as Figure 8 As shown, the control unit includes a processor 410, a memory 420, an input device 430 and an output device 440; the number of processors 410 in the control unit can be one or more, Figure 8 Take a processor 410 as an example; the processor 410, memory 420, input device 430 and output device 440 in the control unit can be connected by bus or other methods, Figure 8 Take connection via bus as an example.

[0131] The memory 420, as a computer-readable storage medium, can be used to store software programs, computer-executable programs and modules, such as program instructions / modules corresponding to the rear-wheel steering control method in the embodiment of the present invention (for example, a rear-wheel steering control device The acquisition module 310, the mode determination module 320 and the control module 330) in. The processor 410...

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PUM

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Abstract

The invention discloses a rear wheel steering control method and device, a control unit, a vehicle and a storage medium. The method comprises the following steps: acquiring steering information; according to the steering information, a rear wheel steering control mode is determined, the control mode comprises a normal mode, an adaptive mode or a chasing mode, and steering coefficients corresponding to the normal mode, the adaptive mode and the chasing mode are different; and controlling rear wheels to steer according to the steering coefficient corresponding to the control mode. According to the technical scheme provided by the embodiment of the invention, the optimal driving-away scheme can be provided, so that the vehicle can be driven away conveniently and safely, and the driving comfort of a user can be improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of vehicle control, and in particular to a rear wheel steering control method and device, a monitoring device control unit, a vehicle and a storage medium. Background technique [0002] With the development of electronic technology, more and more luxury sports cars have been equipped with an electronically controlled rear wheel steering system to facilitate the driver to change the driving direction of the car according to his wishes. The general purpose is to make the front and rear wheel rotation angles opposite at low speeds and in the same direction at high speeds to improve flexibility and stability. [0003] figure 1 It is a schematic diagram of front and rear wheel steering when the vehicle is driving off the road, such as figure 1 As shown, when the vehicle wants to drive away from the roadside parking space, if the vehicle is close to the front and rear distances and curb...

Claims

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Application Information

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IPC IPC(8): B62D6/00B62D101/00B62D113/00B62D137/00
Inventor 王念强单帅禹真余景龙郑文博王仕伟陈志刚侯杰丁树伟王长明
Owner CHINA FIRST AUTOMOBILE