Finished automobile electromagnetic stimulation reverse modeling method

Abstract

The invention provides a finished automobile electromagnetic stimulation reverse modeling method. The method includes the following steps that views in various directions are obtained according to shot pictures of an automobile body, modeling software is imported, a curved surface partitioning technology is utilized to divide the finished automobile body into curved surface blocks with continuous curvatures , and all the curved surface blocks are spliced and sewn to form a finished automobile model; the finished automobile model is simplified; mesh generation is conducted on the simplified model; the generated finished automobile mesh model is imported into the electromagnetic stimulation software for conducting stimulation analysis on finished automobile electromagnetic performance. According to the finished automobile electromagnetic stimulation reverse modeling method, the finished automobile electromagnetic stimulation model is established under the condition that a sample automobile is possessed, so that automobile electromagnetic performance stimulation analysis operation does not need to depend on finished automobile original automobile data any longer; when the finished automobile original automobile data are not available, expensive three-coordinate scanning does not need to be conducted on the sample automobile, the pictures obtained by simple and feasible shooting are used as data sources for conducting reverse modeling, on the premise that accuracy of the model is guaranteed, cost of finished automobile reverse modeling is greatly reduced, the modeling workload is effectively reduced, and time needed for modeling is effectively shortened.

Description

technical field [0001] The invention relates to the technical field of simulation modeling, in particular to a reverse modeling method for vehicle electromagnetic simulation. Background technique [0002] Vehicle modeling is the focus and difficulty of pre-evaluating and simulating the electromagnetic compatibility performance of vehicles. Accurately establishing a vehicle model is an important condition for vehicle electromagnetic simulation. The degree of matching between the established model and the actual vehicle will directly determine the simulation results. accuracy and practicality. However, modeling takes a long time, often occupying more than 70% of the entire electromagnetic simulation process. [0003] At present, there are mainly two types of methods for obtaining the vehicle model for the simulation analysis of vehicle electromagnetic compatibility. The first type of method is based on the existing original car model data files, through multi-software joint ...

AI Technical Summary

Problems solved by technology

The weakness of this method is that when the geometric model of the whole vehicle is directly established in the electromagnetic simulation software based on the actual size of the car body, in order to ensure the accuracy of the model, it is necessary to carry out expensive three-coordinate scanning, otherwise all data obtained through manual measurement requires Very heavy workload and difficult to guarantee accuracy

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