CN-122009147-A - Vehicle control method and vehicle

CN122009147ACN 122009147 ACN122009147 ACN 122009147ACN-122009147-A

Abstract

The application relates to the technical field of vehicle control, in particular to a vehicle control method and a vehicle. The method comprises the steps of receiving a mode switching request, obtaining a vehicle running state and a vehicle body dynamic index, judging whether the vehicle running state is an ignition state to obtain a first judgment result, judging whether the vehicle body dynamic index is in a dynamic index threshold range to obtain a second judgment result, responding to the first judgment result to be yes, executing the mode switching request, and adjusting damping of a shock absorber according to the mode switching request to complete driving mode switching, or responding to the first judgment result to be no, or responding to the second judgment result to be no, and prohibiting executing the mode switching request. By means of whether the running state of the vehicle meets the condition of the ignition state and whether the dynamic index of the vehicle body meets the threshold range of the dynamic index, the vehicle can run comfortably and stably when the vehicle running state meets the post-execution mode switching request.

Inventors

WANG XINGLIANG
WANG WEIJIE
ZHANG XINHE
WEI YANZHE
TIAN CHAOKAI
BAI JIANG
ZHANG HE
WANG SHAOHUA
Shan Xiqing

Assignees

长城汽车股份有限公司

Dates

Publication Date: 20260512
Application Date: 20260309

Claims (10)

1. A vehicle control method characterized by comprising: Receiving a mode switching request, and acquiring a vehicle running state and a vehicle body dynamic index; Judging whether the running state of the vehicle is an ignition state or not to obtain a first judgment result, and judging whether the dynamic index of the vehicle body is in a dynamic index threshold range or not to obtain a second judgment result; Responding to the first judgment result being yes and the second judgment result being yes, executing the mode switching request, and adjusting the damping of the shock absorber according to the mode switching request to complete the driving mode switching, or And in response to the first judging result being NO, or the second judging result being NO, prohibiting the execution of the mode switching request.
2. The method of claim 1, wherein the determining whether the vehicle body dynamic index is within a dynamic index threshold range, before obtaining the second determination result, further comprises: collecting road surface parameters, analyzing the road surface parameters, and determining the type of the road surface; And acquiring the current speed of the vehicle, and combining the current speed of the vehicle with the road surface type to determine the dynamic index threshold range.
3. The method of claim 2, wherein prior to said acquiring the road surface parameters, analyzing the road surface parameters to determine the road surface type, further comprising: under the conditions of a target road surface and a target speed, determining the behavior state of a driver when a driving mode is switched, and recording a plurality of initial vehicle body dynamic parameters; In response to the driver's behavioral state being an abnormal state, determining a maximum value from a recorded plurality of initial vehicle body dynamic parameters as a dynamic index threshold value; And determining a dynamic index threshold range according to the dynamic index threshold value, and storing the dynamic index threshold range, the target road surface and the target speed in an associated mode.
4. The method of claim 1, wherein the body dynamics index comprises a vertical dynamics index, a longitudinal pitch dynamics index, and a lateral roll dynamics index; the step of judging whether the dynamic index of the vehicle body is in the threshold range of the dynamic index to obtain a second judgment result comprises the following steps: the vertical dynamic index, the longitudinal pitching dynamic index and the transverse rolling dynamic index in the vehicle body dynamic index are respectively compared with a dynamic index threshold range; determining that the second determination result is yes in response to the vertical dynamic index, the longitudinal pitch dynamic index and the lateral roll dynamic index being within the dynamic index threshold range, or And in response to any one of the vertical dynamic index, the longitudinal pitching dynamic index and the transverse rolling dynamic index exceeding the dynamic index threshold range, determining whether a second judgment result is negative.
5. The method of claim 1, wherein the body dynamics index comprises a vertical dynamics index, a longitudinal pitch dynamics index, and a lateral roll dynamics index; The dynamic index threshold range comprises a vertical threshold range, a longitudinal pitching threshold range and a transverse rolling threshold range; the step of judging whether the dynamic index of the vehicle body is in the threshold range of the dynamic index to obtain a second judgment result comprises the following steps: Comparing the vertical dynamic index with the vertical threshold range, the longitudinal pitch dynamic index with the longitudinal pitch threshold range, and the lateral roll dynamic index with the lateral roll threshold range; Determining that a second determination is yes in response to the vertical dynamic index being within the vertical threshold range and the longitudinal pitch dynamic index being within the longitudinal pitch threshold range and the lateral roll dynamic index being within the lateral roll threshold range, or And determining whether a second determination result is negative in response to the vertical dynamic index exceeding the vertical threshold range, or the longitudinal pitch dynamic index exceeding the longitudinal pitch threshold range, or the lateral roll dynamic index exceeding the lateral roll threshold range.
6. The method of claim 1, wherein said adjusting shock absorber damping in accordance with said mode switch request comprises: determining a switched target driving mode according to the mode switching request; Determining a target current amount corresponding to the target driving mode; And sending the target current amount to a shock absorber so that the shock absorber can carry out damping adjustment based on the target current amount.
7. The method of claim 6, wherein the determining the target amount of current corresponding to the target driving mode comprises: Determining a target damping quantity of the shock absorber corresponding to the target driving mode; and acquiring a damping current mapping relation, and determining a target current amount from the damping current mapping relation according to the target damping amount.
8. The method of claim 6, wherein after the transmitting the target amount of current to a damper, the damper performing comprises: Controlling a solenoid valve in the damper to adjust from a present current amount to the target current amount; And adjusting the opening of the electromagnetic valve by utilizing the target current amount, and controlling the flow of hydraulic oil in the shock absorber according to the opening of the electromagnetic valve after the adjustment.
9. The method of claim 1, wherein receiving the mode switch request, acquiring the vehicle operating state and the body dynamics index, comprises: Receiving a mode switching request, and determining an original driving mode and a target driving mode corresponding to the mode switching request; Determining a first shock absorber damping corresponding to the original driving mode and a second shock absorber damping corresponding to the target driving mode, and determining a damping deviation amount of the first shock absorber damping and the second shock absorber damping; In response to determining that the damping deviation amount is greater than a deviation threshold, a vehicle operating state and a body dynamics index are obtained.
10. A vehicle comprising an electronic device, comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the method of any one of claims 1 to 9 when the computer program is executed by the processor.

Description

Vehicle control method and vehicle Technical Field The application relates to the technical field of vehicle control, in particular to a vehicle control method and a vehicle. Background At present, as the functions of the vehicle are increased, the vehicle has multiple driving modes, and different driving modes can be switched. However, in the driving mode switching process, the damping of the shock absorber corresponding to the two driving modes before and after switching is changed, so that the shock absorber is internally impacted, and abnormal sound or unstable running of the vehicle is easy to occur. Disclosure of Invention Accordingly, the present application is directed to a vehicle control method and a vehicle, which are used for solving the technical problems that the change of the damping of a shock absorber caused by the switching of the current driving mode, the shock is generated in the shock absorber, and abnormal sound or unstable driving of the vehicle is easy to occur. Based on the above object, the present application provides a vehicle control method including: Receiving a mode switching request, and acquiring a vehicle running state and a vehicle body dynamic index; Judging whether the running state of the vehicle is an ignition state or not to obtain a first judgment result, and judging whether the dynamic index of the vehicle body is in a dynamic index threshold range or not to obtain a second judgment result; Responding to the first judgment result being yes and the second judgment result being yes, executing the mode switching request, and adjusting the damping of the shock absorber according to the mode switching request to complete the driving mode switching, or And in response to the first judging result being NO, or the second judging result being NO, prohibiting the execution of the mode switching request. Based on the same inventive concept, the application also provides an electronic device comprising a memory, a processor and a computer program stored on the memory and executable by the processor, the processor implementing the method as described above when executing the computer program. Based on the same inventive concept, the application also provides a vehicle comprising the electronic device as described above. It can be seen from the above that, the vehicle control method and the vehicle provided by the application can obtain the vehicle running state and the vehicle body dynamic index after receiving the mode switching request, wherein the vehicle running state represents the current running condition of the vehicle, and the vehicle body dynamic index represents the current dynamic change degree of the vehicle, so that whether the vehicle running state is an ignition state or not and whether the vehicle body dynamic index is in a dynamic range are required to be judged, if yes, the judgment result of the two conditions proves that the vehicle meets the condition of the ignition state at the moment, the vehicle body dynamic index also meets the threshold range of the dynamic index, the vehicle dynamic change degree is lower, the vehicle can be executed according to the mode switching request, the damping of the shock absorber is correspondingly adjusted, and further, the condition of abnormal sound or vehicle body instability caused by the change of the damping of the shock absorber is avoided, and the vehicle can be ensured to run comfortably and stably during the driving mode switching, and if any one of the judgment results of the two conditions is no at the moment, the premise that the driving mode switching is not met is proved, and if the driving mode switching cannot be completed or the vehicle is abnormal or the vehicle body is in the condition or the abnormal condition or the vehicle body is in the dynamic range, the condition is met, the overall driving mode switching is ensured, and the vehicle is required to be executed, and the comfort is ensured. Drawings In order to more clearly illustrate the technical solutions of the present application or related art, the drawings that are required to be used in the description of the embodiments or related art will be briefly described below, and it is apparent that the drawings in the following description are only embodiments of the present application, and other drawings may be obtained according to the drawings without inventive effort to those of ordinary skill in the art. FIG. 1 is a flow chart of a vehicle control method according to an embodiment of the present application; FIG. 2 is a schematic diagram of damping forces of an electronically controlled shock absorber corresponding to a comfort mode and a sport mode according to an embodiment of the present application; FIG. 3 is a table diagram of specific value ranges corresponding to Pitch in a dynamic index of a vehicle body according to an embodiment of the present application; Fig. 4 is a block diagram showing the structure of a vehicle control apparatu