Dynamical model modeling method of vehicle driven on mountainous road

A technology of vehicle dynamics and model modeling, which is applied in the field of vehicle dynamics model modeling on mountainous roads, and can solve problems such as poor adaptability

Inactive Publication Date: 2012-04-04
NORTHWESTERN POLYTECHNICAL UNIV
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Problems solved by technology

[0004] In order to overcome the problem of poor adaptability caused by the existing vehicle dynamics model modeling method only for vehicles traveling on a plane, the present invention provides a vehicle dynamics model modeling method for drivin

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  • Dynamical model modeling method of vehicle driven on mountainous road
  • Dynamical model modeling method of vehicle driven on mountainous road
  • Dynamical model modeling method of vehicle driven on mountainous road

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Embodiment Construction

[0021] refer to Figure 1~3 .

[0022] The invention provides a vehicle dynamics modeling method for mountainous roads, which is used to realize the safety and stability analysis of vehicles when driving on mountainous roads, mainly by analyzing the force of vehicles when driving on mountainous roads, and establishing according to Newton's law of motion Vehicle dynamics model.

[0023] The present invention adopts the vehicle coordinate system provided by the International Engineering Association SAE (Society of Automotive Engineers), that is, the x-axis is forward along the vehicle body on the longitudinal symmetry plane, the y-axis is to the right, and the z-axis is downward. The Euler angles of mountain roads are (ζ, θ, α), where ζ is the road curve angle, θ is the slope angle of the road, and α is the roll angle of the road surface. Since the curve of the road does not affect the dynamic performance of the vehicle, ζ is ignored Impact. The component of gravity in the ve...

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Abstract

The invention discloses a dynamical model modeling method of vehicle driven on mountainous road, for solving the technical problem in the current vehicle dynamical model modeling method that has bad adaptability caused by a plane driven vehicle. According to the technical solution, the vehicle dynamical model driven on the mountainous road is built by means of an operation dynamical model and a tire model of the vehicle, a longitudinal velocity and a normal load of each vehicle wheel; the stability of the model is analyzed and the traffic safety of the vehicle on the mountainous road is evaluated according to the built vehicle dynamical model, the acquired vehicle driving state data and the road geometrical information. In the model, the slope angle of the mountainous road, the side rake angle of the road surface while turning and the dynamic change of the normal load of each tire while turning are considered so that the invention reduces or prevents the traffic accident and increases the driving safety of the vehicle on the mountainous road.

Description

technical field [0001] The invention relates to a modeling method for a vehicle dynamics model, in particular to a modeling method for a vehicle dynamics model traveling on a mountainous road. Background technique [0002] The geographical conditions of mountainous roads are complex, the road surface is narrow, and there are many bends and slopes. Vehicles are more prone to rollover accidents when driving on mountain roads than ordinary roads. Especially for heavy vehicles, due to their high center of gravity, large mass and volume, and aspect ratio Rollover accidents are more likely to occur when driving on mountain roads, so it is particularly important to evaluate the driving safety of mountain road traffic. There are many factors affecting road traffic safety, which can be considered from four aspects: people, vehicles, roads and the environment. Among them, vehicles are the most direct factors that induce traffic accidents. Therefore, starting from vehicle dynamics, the...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCY02T10/82
Inventor 史忠科王慧丽
Owner NORTHWESTERN POLYTECHNICAL UNIV
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