Automobile and terrain interaction simulation method for automobile simulator

A simulation method and simulator technology, applied in the fields of instrumentation, 3D modeling, calculation, etc., can solve the problems of inability to model, the sense of reality needs to be improved, and lack of mathematical support for dynamics, and achieve the effect of improving the sense of driving reality.

Active Publication Date: 2020-08-11
JIUJIANG PRECISION MEASURING TECH RES INST
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Problems solved by technology

[0004] In the past, the collision detection method was usually used. Although this method can perceive the existence of the ground, it is a geometry-based method and cannot model the ground information as the input signal of the car motion model in the car simulator. Lack of mathematical support for dynamics, the sense of reality needs to be improved

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  • Automobile and terrain interaction simulation method for automobile simulator
  • Automobile and terrain interaction simulation method for automobile simulator
  • Automobile and terrain interaction simulation method for automobile simulator

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Embodiment Construction

[0036] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0037] A method for interactive simulation of a vehicle and a terrain used in a vehicle simulator, the specific steps are as follows:

[0038] 1) Generate terrain based on signed distance function

[0039] First, set the position of the ridge line according to the user input, input the ridge line as figure 1 shown; then calculate the SDF value of the entire area by the definition of the signed distance function, the definition of the signed distance function SDF is as follows:

[0040]

[0041] Among them, φ(x, y) is the definition of the signed distance function, and Ω is the boundary;

[0042] Invert and translate the SDF value calculated by formula (1) in turn to generate the height value of the whole area, as shown in formula (2), the c...

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Abstract

The invention discloses an automobile and terrain interaction simulation method for an automobile simulator. The method comprises: firstly, setting the position of a ridge line according to a user input; calculating the SDF value of the whole area according to the definition of a symbolic distance function; performing negation and translation operations on the calculated SDF values in sequence; generating a height value of the whole area; carrying out random disturbance on the generated height value; obtaining a final area height value, taking the converted height value as a tire ground heightinput value; calculating the posture of an automobile by inputting into a 10-degree-of-freedom automobile model for vertical movement of an automobile suspension, repeatedly calculating the contact position of a tire and the ground and the ground height difference value in a calculation period, and updating the posture of the automobile at the same time, thereby realizing the interactive simulation of the automobile and the terrain, providing mathematical support for dynamics and effectively improving the sense of reality of driving.

Description

technical field [0001] The invention relates to the technical field of scene dynamic interactive simulation, in particular to a vehicle-terrain interactive simulation method used in a vehicle simulator. Background technique [0002] Vehicle Driving Simulator (VDS) applies virtual reality technology to car driving training, and uses computer technology to generate virtual scenes, sound effects and motion simulation during car driving, so that drivers can immerse themselves in the virtual driving environment. , in order to produce the real car driving feeling, so as to experience, understand and learn the car driving in the real world. This method can not only safely and effectively improve the driver's technical level, but also reduce various costs and accidents, and is increasingly receiving widespread attention in the field of traffic safety at home and abroad. [0003] The motion reality of the car driving simulator directly affects the user's driving experience, especial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T19/00G06T17/05
CPCG06T19/003G06T17/05
Inventor 邹长军段奕明赖智华李志强
Owner JIUJIANG PRECISION MEASURING TECH RES INST
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