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Optimization method of vehicle safety system parameters based on micro-traffic simulation model

A technology of traffic simulation and optimization method, which is applied in the field of automotive safety system parameter optimization, can solve problems such as limited quantity, difficulty in obtaining accident data, inability to adapt to the rapid application requirements of intelligent technology, and achieve the effect of convenient application

Active Publication Date: 2019-04-16
TSINGHUA UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

However, because the accident data is difficult to obtain and the quantity is limited, the optimization method based on the re-simulation of the accident reproduction data in the past can no longer meet the rapid application requirements of intelligent technology.

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  • Optimization method of vehicle safety system parameters based on micro-traffic simulation model

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Embodiment Construction

[0031] The method for optimizing automobile safety system parameters based on the micro-traffic simulation model of the present invention generally includes the following steps:

[0032] 1. Establish a micro-traffic model composed of multiple vehicles;

[0033] 2. Change the parameters of different control systems of the same vehicle, and find the relationship between the set parameters and the risk of occupant injury through a long-term random simulation;

[0034] 3. Establish an optimization function, use modern optimization methods to solve the function, and get the optimal control system parameters.

[0035] In step 1 above, the method for establishing a micro-traffic model composed of multiple vehicles is:

[0036] When building the model, the number of vehicles does not need to be specifically determined, it is determined by the scenario considered by the designer. For example, if the designer only cares about not colliding with the car in front, this model will only have two car...

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Abstract

The present invention discloses a vehicle safety system parameter optimization method based on a micro-traffic simulation model, applicable to reasonably selecting a control system parameter by an automobile manufacturer, to obtain an optimal effect. According to the method, a micro-traffic model consisting of multiple vehicles is established, a relationship between a set parameter and an occupant injury risk is found by changing parameters of different control systems by means of long-time random simulation, an optimization function is established, and then the function is solved by using a modern optimization method, to obtain an optimal control system parameter. According to the present invention, only natural driving data is required, and a great deal of accident data is unnecessary, so that the method is convenient in application.

Description

Technical field [0001] The invention relates to a method for optimizing parameters of an automobile safety system based on a micro traffic simulation model, in particular to a method for optimizing safety parameters of an automobile emergency collision avoidance system. Background technique [0002] With the development of electronic control technology, modern vehicles are becoming more intelligent. However, the intelligentization of automobiles requires a long process, which results in the mixed driving of intelligent and non-intelligent vehicles in traffic. In order to adapt to this complex situation, vehicle manufacturers need to optimize the design of the vehicle safety system to obtain the smallest probability of accidents or occupant injury risks. However, because accident data is difficult to obtain and the quantity is limited, the previous optimization method of re-simulating accident reproduction data is no longer suitable for the rapid application of intelligent techno...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20G06F2111/06
Inventor 罗禹贡陈龙李克强边明远张书玮秦兆博解来卿罗剑张东好连小珉王建强杨殿阁郑四发
Owner TSINGHUA UNIV