CN-121997457-A - Method and device for calculating time course response of vehicle, electronic equipment and storage medium

CN121997457ACN 121997457 ACN121997457 ACN 121997457ACN-121997457-A

Abstract

The application discloses a calculation method, a device, electronic equipment and a storage medium of a vehicle time response; the method comprises the steps of obtaining a mass matrix, a damping matrix and a rigidity matrix of a vehicle to be tested, inputting the mass matrix, the damping matrix and the rigidity matrix into a pre-constructed time-course response calculation model, and calculating time-course response of the vehicle to be tested through the time-course response calculation model according to the mass matrix, the damping matrix and the rigidity matrix, wherein the time-course response comprises a displacement vector, a speed vector and an acceleration vector. The embodiment of the application can obviously improve the calculation efficiency while ensuring the calculation precision, and is suitable for time-course response analysis of the key structure of the commercial vehicle under the complex power load.

Inventors

Zhou Guangshuai
ZHAI DEWEN
Zhang Paipai
HAN WEIJIE
AN JIABAO
ZHANG SHUO
CHEN JUNJIE

Assignees

一汽解放青岛汽车有限公司

Dates

Publication Date: 20260508
Application Date: 20260126

Claims (10)

1. A method of calculating a time course response of a vehicle, the method comprising: Acquiring a mass matrix, a damping matrix and a rigidity matrix of a vehicle to be tested; Inputting the mass matrix, the damping matrix and the stiffness matrix into a pre-constructed time-course response calculation model; And calculating the time-course response of the vehicle to be tested through the time-course response calculation model according to the mass matrix, the damping matrix and the rigidity matrix, wherein the time-course response comprises a displacement vector, a speed vector and an acceleration vector.
2. The method of claim 1, wherein calculating a time-course response of the vehicle under test from the mass matrix, the damping matrix, and the stiffness matrix by the time-course response calculation model comprises: constructing a general structural dynamics equation according to the mass matrix, the damping matrix and the rigidity matrix through the time response calculation model; converting the structural dynamics equation of the general form from a second order differential equation to a first order state space equation by introducing a state space vector; And calculating the time-course response of the vehicle to be tested through the first-order state space equation.
3. The method of claim 2, wherein calculating the time course response of the vehicle under test from the first order state space equation comprises: by applying the homogeneous capacity expansion method, a constant 1 is introduced to increase the state space vector by one dimension, so as to obtain the state space vector after dimension increase; Converting the first-order state space equation into a homogeneous differential equation through the state space vector after dimension increase; and calculating the time-course response of the vehicle to be tested through the homogeneous differential equation.
4. A method according to claim 3, wherein calculating the time course response of the vehicle under test from the homogeneous differential equation comprises: representing the solution of the homogeneous differential equation by using a Magnus series; Based on the step length h, applying a midpoint numerical integration formula to integration in the cut Magnus series to obtain a 2-order approximate solution formula of the Magnus series; And calculating the time-course response of the vehicle to be tested through a 2-order approximation solving formula of the Magnus series.
5. A method according to claim 3, wherein calculating the time course response of the vehicle under test from the homogeneous differential equation comprises: representing the solution of the homogeneous differential equation by using a Magnus series; Based on the step length h, applying a binary two-point Gauss-Legendre numerical value product formula to the integral in the cut Magnus series to obtain a 4-order approximate solution formula of the Magnus series; and calculating the time-course response of the vehicle to be tested through a 4-order approximation solving formula of the Magnus series.
6. The method of claim 4, wherein calculating the time-course response of the vehicle under test from a 2-order approximation solution formula of the Magnus series comprises: Substituting the cut Magnus series into an index matrix corresponding to a 2-order approximation solving formula of the Magnus series and performing Taylor expansion to obtain a solution of the homogeneous differential equation in each time step; And calculating the time course response of the vehicle to be tested according to the solution of the homogeneous differential equation in each time step.
7. The method of claim 5, wherein calculating the time-course response of the vehicle under test from the 4-order approximation solution formula of the Magnus series comprises: Substituting the cut Magnus series into an index matrix corresponding to a 4-order approximation solving formula of the Magnus series and performing Taylor expansion to obtain a solution of the homogeneous differential equation in each time step; And calculating the time course response of the vehicle to be tested according to the solution of the homogeneous differential equation in each time step.
8. A calculation device of a vehicle time course response is characterized by comprising an acquisition module, an input module and a calculation module, wherein, The acquisition module is used for acquiring a mass matrix, a damping matrix and a rigidity matrix of the vehicle to be tested; the input module is used for inputting the mass matrix, the damping matrix and the rigidity matrix into a pre-constructed time-course response calculation model; The calculation module is used for calculating the time-course response of the vehicle to be measured through the time-course response calculation model according to the mass matrix, the damping matrix and the rigidity matrix, wherein the time-course response comprises a displacement vector, a speed vector and an acceleration vector.
9. An electronic device, comprising: One or more processors; A memory for storing one or more programs, When the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method of computing a vehicle time course response of any of claims 1 to 7.
10. A storage medium having stored thereon a computer program, which when executed by a processor implements a method of calculating a vehicle time-course response according to any one of claims 1 to 7.

Description

Method and device for calculating time course response of vehicle, electronic equipment and storage medium Technical Field The embodiment of the application relates to the technical field of automobile engineering, in particular to a method and a device for calculating time-course response of a vehicle, electronic equipment and a storage medium. Background In the field of automobile engineering, the dynamic performance of a vehicle is a core index for measuring the safety, comfort and control stability of the vehicle, and the time-course response is used as a key characterization parameter of the dynamic performance of the vehicle, so that the accurate calculation of the dynamic performance of the vehicle has important significance for research and development design, performance optimization and safety evaluation of the vehicle. The time course response can dynamically reflect the motion state change of the vehicle under different driving working conditions (such as sudden acceleration, sudden braking, turning, bumpy road surface driving and the like), and concretely comprises key parameters such as a displacement vector, a speed vector, an acceleration vector and the like, wherein the key parameters are directly related to a plurality of core links such as chassis adjustment, body structure strength design, suspension system optimization, passenger riding experience and the like. Along with the development of commercial vehicle technology, in order to ensure the safety and reliability of key structures such as a frame, a cab, a suspension system, a power assembly and the like under the working conditions such as running, braking, cargo loading and the like, the accurate analysis of the vibration rule and the dynamic characteristics of the key structures is an insurmountable key ring in the structural design of the commercial vehicle. Although many numerical methods have been developed for the structural dynamics of commercial vehicles, these methods have limitations such as 1) finite difference methods, which are very sensitive to time steps and not highly accurate. 2) Although accurate and unconditionally stable, the method for fine integration is to calculate Du Ha Mel integration according to different forms of power external load, and does not have a general solving format, so that the power response of a structure is often difficult to solve when facing to complex power loads. 3) The time finite element method is a variational method principle which can be applied to the problem of dynamics initial values. Therefore, the numerical calculation method with higher efficiency and universality is further developed, the problem of large-scale structural dynamics of the commercial vehicle is accurately and efficiently solved, and the method has important significance for improving the structural strength, the vibration comfort and the running safety of the commercial vehicle. Disclosure of Invention The application provides a calculation method, a device, electronic equipment and a storage medium for time response of a vehicle, which can obviously improve the calculation efficiency while guaranteeing the calculation precision and are suitable for time response analysis of a key structure of a commercial vehicle under complex power load. In a first aspect, an embodiment of the present application provides a method for calculating a time course response of a vehicle, where the method includes: Acquiring a mass matrix, a damping matrix and a rigidity matrix of a vehicle to be tested; Inputting the mass matrix, the damping matrix and the stiffness matrix into a pre-constructed time-course response calculation model; And calculating the time-course response of the vehicle to be tested through the time-course response calculation model according to the mass matrix, the damping matrix and the rigidity matrix, wherein the time-course response comprises a displacement vector, a speed vector and an acceleration vector. In a second aspect, the embodiment of the application also provides a device for calculating the time course response of the vehicle, which comprises an acquisition module, an input module and a calculation module, wherein, The acquisition module is used for acquiring a mass matrix, a damping matrix and a rigidity matrix of the vehicle to be tested; the input module is used for inputting the mass matrix, the damping matrix and the rigidity matrix into a pre-constructed time-course response calculation model; The calculation module is used for calculating the time-course response of the vehicle to be measured through the time-course response calculation model according to the mass matrix, the damping matrix and the rigidity matrix, wherein the time-course response comprises a displacement vector, a speed vector and an acceleration vector. In a third aspect, an embodiment of the present application provides an electronic device, including: One or more processors; A memory for storing one or more programs