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Road vehicle running danger state early warning method and system under strong lateral wind effect

A vehicle driving and lateral wind technology, applied in the field of traffic safety, can solve the problems of aggravated vehicle sensitivity to lateral wind and difficult collection

Active Publication Date: 2015-02-04
WUHAN KOTEI TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The lateral wind has an important impact on the stability and safety of the vehicle, and the development of the current body structure is to reduce the weight. The optimization of the body structure will intensify the sensitivity of the vehicle to the lateral wind. The wind has great uncertainty, and it is difficult to collect lateral wind parameters such as lateral wind force and moment by directly installing on-board sensors, etc.

Method used

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  • Road vehicle running danger state early warning method and system under strong lateral wind effect
  • Road vehicle running danger state early warning method and system under strong lateral wind effect
  • Road vehicle running danger state early warning method and system under strong lateral wind effect

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Experimental program
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Effect test

Embodiment 1

[0052] Embodiment 1. Highway vehicle running dangerous situation warning method under strong lateral wind

[0053]This method is expected to establish a lateral wind risk assessment strategy. Through this evaluation system, the dangerous situation of the vehicle under strong lateral wind can be accurately identified to achieve the effect of early warning, and finally implanted into the road vehicle driving risk under the action of strong lateral wind. situational warning system. The method includes the following steps:

[0054] 1. Establish a dynamic model of road vehicles under strong side wind

[0055] Such as figure 1 As shown, the schematic diagram of vehicle dynamics model under strong side wind. In order to grasp the influence of lateral wind on vehicle stability and safety, the vehicle dynamics model is simplified to a linear two-degree-of-freedom vehicle model, that is, a vehicle dynamics model with lateral and yaw motions. In the figure, v is the vehicle speed, β ...

Embodiment 2

[0086] Embodiment 2. Highway Vehicle Running Dangerous Situation Warning System under the Action of Strong Sidewind

[0087] The road vehicle dangerous situation warning system under the action of strong lateral wind is composed of a front wheel angle sensor installed on the front wheel of the vehicle, a yaw rate sensor installed at the center of gravity of the vehicle, and a lateral displacement sensor installed at the center of gravity of the vehicle. It consists of a gyroscope installed at the center of gravity of the vehicle, an on-board electronic control unit, and an alarm prompt device, wherein: the sensors are respectively used to collect state information including front wheel rotation angle, yaw rate, lateral displacement, yaw rate acceleration, etc., and They are respectively connected with the electronic control unit through data lines.

[0088] The electronic control unit includes a single-chip microcomputer, and the solidification program in the single-chip micro...

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Abstract

The invention discloses a road vehicle running danger state early warning method and system under a strong lateral wind effect, and belongs to the field of traffic safety. The invention aims at designing an effective road vehicle running danger state early warning system. When a vehicle runs in the strong lateral wind environment, the lateral wind acting force and the force moment are accurately estimated, the running danger state due to the lateral wind effect is predicted in time, and in addition, the warning is given to a driver in advance. On the basis of a Kallman filtering algorithm, the estimation method of the strong lateral wind on the vehicle acting force and the force moment is provided, a danger state evaluation index system of the road vehicle under the strong lateral wind effect is built from the restriction of the pavement attaching coefficient on the vehicle running, a four-stage warning mode is adopted, and the road vehicle running danger state early warning system under the strong lateral wind effect is designed. The road vehicle running danger state early warning method has the advantages that the running safety of the road vehicle under the strong lateral wind effect can be sufficiently ensured, and the system has the advantages of high reliability, high precision and the like.

Description

technical field [0001] The invention relates to an early warning method and an early warning system for road vehicle running dangerous situations under strong side wind, and belongs to the field of traffic safety. Background technique [0002] With the rapid development of high-grade highways in our country, people put forward higher and higher requirements for the stability and safety of road vehicles. However, due to the ubiquity of side winds, the dynamic performance of vehicles is often reduced due to the interference of side winds. Especially when the vehicle is running at high speed, if it is subjected to strong lateral wind, its driving stability and safety will be significantly reduced. In extreme cases, the vehicle will deviate from the correct driving route, and even serious accidents such as sideslip and rollover will occur. [0003] Side wind is a very common phenomenon in nature, especially it will make unsteady changes with time and space. The greater the cha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 褚端峰吴超仲孙川田飞
Owner WUHAN KOTEI TECH CORP
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