CN-121982270-A - Method, device, equipment and medium for calculating gravity acting in door opening and closing process

CN121982270ACN 121982270 ACN121982270 ACN 121982270ACN-121982270-A

Abstract

The application discloses a calculation method, a device, equipment and a medium for gravity acting in the process of opening and closing a vehicle door, which belong to the technical field of vehicle development; the method comprises the steps of determining an upper hinge coordinate according to an intrinsic parameter, determining a gravity center motion track of the vehicle door in a rotation angle range according to the intrinsic parameter and the upper hinge coordinate, and determining gravity acting data of the vehicle door in the rotation angle range according to the gravity center motion track. According to the inherent parameters and the rotation angle range of the vehicle door, the gravity acting of different opening angles of the vehicle door can be calculated in real time under the conditions of different vehicle types and different hinge arrangements, the three-dimensional simulation software is not required to be repeatedly adjusted, and the calculation efficiency of the gravity acting is improved.

Inventors

YAN WENYOU
CHEN ZHIJIA
ZHANG TIANCHENG
XIAO TAO
HE SHAOLONG

Assignees

浙江零跑科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260105

Claims (10)

1. The method for calculating the gravity acting in the process of opening and closing the vehicle door is characterized by comprising the following steps of: Acquiring inherent parameters and a rotation angle range of a vehicle door; determining upper hinge coordinates according to the intrinsic parameters; determining a gravity center movement track of the vehicle door in the rotation angle range according to the inherent parameters and the upper hinge coordinates; and determining gravity acting data of the vehicle door within the rotation angle range according to the gravity center movement track.
2. The method of claim 1, wherein the intrinsic parameters include lower hinge coordinates, hinge inner and outer tilt angles, hinge front and back tilt angles, and inter-hinge spacing; The step of determining the upper hinge coordinates from the intrinsic parameters comprises: obtaining an upper hinge initial coordinate according to the lower hinge coordinate and the interval between the hinges; And decomposing the inner and outer inclination angles of the hinge and the front and rear inclination angles of the hinge into coordinate axis components, and overlapping the coordinate axis components into the initial coordinates of the upper hinge to obtain the coordinates of the upper hinge.
3. The computing method of claim 2, wherein the intrinsic parameters further comprise first door center of gravity coordinates; The step of determining the movement track of the center of gravity of the vehicle door in the rotation angle range according to the inherent parameters and the upper hinge coordinates comprises the following steps: Determining a first unit vector of a hinge axis according to the lower hinge coordinates and the upper hinge coordinates; determining the gravity center projection length of the gravity center of the vehicle door on the hinge axis according to the lower hinge coordinate, the upper hinge coordinate and the first gravity center coordinate; and determining a gravity center movement track of the vehicle door in the rotation angle range according to the first unit vector, the first vehicle door gravity center coordinate and the gravity center projection length.
4. A computing method according to claim 3, wherein the step of determining a first unit vector of hinge axes from the lower hinge coordinates and the upper hinge coordinates comprises: The lower hinge coordinates and the upper hinge coordinates determine a first direction vector of the hinge axis; And normalizing the direction vector of the hinge axis to obtain a first unit vector of the hinge axis.
5. A computing method as defined in claim 3, wherein determining a center of gravity projection length of a door center of gravity at the hinge axis based on the lower hinge coordinate, the upper hinge coordinate, and the first door center of gravity coordinate comprises: determining a projection point coordinate of the center of gravity of the vehicle door on the hinge axis according to the lower hinge coordinate, the upper hinge coordinate and the first vehicle door center of gravity coordinate; and determining the gravity center projection length according to the projection point coordinates and the first door gravity center coordinates.
6. The computing method of claim 5, wherein the range of rotation angles includes a plurality of rotation angles; the step of determining the center of gravity movement track of the vehicle door in the rotation angle range according to the first unit vector, the first vehicle door center of gravity coordinate and the center of gravity projection length comprises the following steps: determining a second direction vector according to the projected point coordinates and the first door barycentric coordinates; Rotating the second direction vector around the first unit vector by the rotation angle to obtain a third direction vector; normalizing the third direction vector to obtain a second unit vector; Determining a second door center of gravity coordinate at the angle of rotation based on the first door center of gravity coordinate, the center of gravity movement trajectory, and the second unit vector; and fitting according to the barycenter coordinates of the second door under each rotation angle to obtain the barycenter movement track.
7. The computing method of claim 6, wherein the intrinsic parameters further comprise door mass; The step of determining gravity acting data of the vehicle door within the rotation angle range according to the gravity center movement track comprises the following steps: obtaining the height difference of the gravity center of the vehicle door according to the gravity center movement track; And obtaining gravity acting data of the vehicle door within the rotation angle range according to the height difference of the gravity center of the vehicle door and the mass of the vehicle door.
8. A computing device for gravity work in a door opening and closing process, the computing device comprising: The data acquisition module is used for acquiring inherent parameters and rotation angle ranges of the vehicle door; the upper hinge coordinate determining module is used for determining upper hinge coordinates according to the inherent parameters; The gravity center movement track determining module is used for determining the gravity center movement track of the vehicle door in the rotation angle range according to the inherent parameters and the upper hinge coordinates; And the gravity center acting determining module is used for determining gravity acting data of the vehicle door within the rotation angle range according to the gravity center movement track.
9. An electronic device comprising a memory and a processor, the memory having stored thereon a computer program which, when executed by the processor, implements the computing method of any of claims 1-7.
10. A computer readable storage medium, having stored thereon a computer program, the computer program being loaded by a processor to perform the steps of the computing method according to any of claims 1-7.

Description

Method, device, equipment and medium for calculating gravity acting in door opening and closing process Technical Field The application relates to the technical field of vehicle development, in particular to a method, a device, equipment and a medium for calculating gravity acting in a vehicle door opening and closing process. Background In the development of vehicles, in order to ensure the comfort of opening and closing the vehicle door, the energy influence of the door system needs to be calculated comprehensively, and gravity acting is an important component of the energy calculation of the door system in the door opening and closing process, and the result is strongly related to the spatial arrangement of the hinge axis. In the related art, the highest point and the lowest point in the gravity center motion track of the vehicle door need to be found when the gravity does work, and an engineer can only obtain a certain moment position in the three-dimensional software after finishing hinge arrangement in the three-dimensional simulation software, can not output multi-point position coordinate information at the same time, and needs to repeatedly adjust the vehicle door coordinates in the three-dimensional software to sequentially calculate, so that the calculation efficiency is low. Disclosure of Invention The embodiment of the application provides a method, a device, equipment and a medium for calculating gravity acting in a vehicle door opening and closing process, and aims to solve the problem that the calculation efficiency is low because vehicle door coordinates in three-dimensional software are required to be adjusted to be calculated in sequence because multi-point position coordinate information cannot be output simultaneously in the three-dimensional software. In a first aspect, an embodiment of the present application provides a method for calculating gravity acting in a door opening and closing process, where the calculating method includes the following steps: Acquiring inherent parameters and a rotation angle range of a vehicle door; Determining upper hinge coordinates according to the intrinsic parameters; determining a gravity center movement track of the vehicle door in a rotation angle range according to the inherent parameters and the upper hinge coordinates; and determining gravity acting data of the vehicle door within a rotation angle range according to the gravity center movement track. In some embodiments, the intrinsic parameters include lower hinge coordinates, hinge inner and outer tilt angles, hinge front and back tilt angles, and inter-hinge spacing; the step of determining the upper hinge coordinates from the intrinsic parameters includes: obtaining an upper hinge initial coordinate according to the lower hinge coordinate and the interval between the hinges; and decomposing the inner and outer dip angles of the hinge and the front and rear dip angles of the hinge into coordinate axis components, and overlapping the coordinate axis components into the initial coordinates of the upper hinge to obtain the coordinates of the upper hinge. In some embodiments, the intrinsic parameters further include first door center of gravity coordinates; the step of determining the gravity center movement track of the vehicle door in the rotation angle range according to the inherent parameters and the upper hinge coordinates comprises the following steps: Determining a first unit vector of a hinge axis according to the lower hinge coordinate and the upper hinge coordinate; determining the gravity center projection length of the gravity center of the vehicle door on the hinge axis according to the lower hinge coordinate, the upper hinge coordinate and the first gravity center coordinate of the vehicle door; And determining the gravity center movement track of the vehicle door in the rotation angle range according to the first unit vector, the first vehicle door gravity center coordinate and the gravity center projection length. In some embodiments, the step of determining a first unit vector of the hinge axis from the lower hinge coordinate and the upper hinge coordinate comprises: the lower hinge coordinates and the upper hinge coordinates determine a first direction vector of the hinge axis; And normalizing the direction vector of the hinge axis to obtain a first unit vector of the hinge axis. In some embodiments, determining the projected length of the center of gravity of the door at the hinge axis based on the lower hinge coordinate, the upper hinge coordinate, and the first door center of gravity coordinate comprises: determining the projection point coordinate of the gravity center of the vehicle door on the hinge axis according to the lower hinge coordinate, the upper hinge coordinate and the first gravity center coordinate of the vehicle door; and determining the gravity center projection length according to the projection point coordinates and the first door gravity center coordinate