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Method for detecting side turnover of vehicle

A detection method and technology on the vehicle side, applied in the field of vehicle safety, can solve problems such as difficult installation and high cost of sensors, and achieve high accuracy and reliability

Inactive Publication Date: 2015-07-15
HUNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The most direct and accurate way to judge the risk of vehicle rollover is to directly measure the contact force between the tire and the road, but such sensors are expensive and difficult to install

Method used

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  • Method for detecting side turnover of vehicle
  • Method for detecting side turnover of vehicle
  • Method for detecting side turnover of vehicle

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Embodiment Construction

[0022] The embodiment of the method of the present invention will be described below in conjunction with the accompanying drawings, so that those skilled in the art can better understand the present invention. It should be noted that the brake model, tire model, etc. involved in the present invention do not specifically refer to a specific model or method, and all brake and tire models known in the art can be used in this method, which are collectively referred to herein as Brake model, tire model. Also, in the following description, detailed descriptions of known functions and design methods may obscure the main content of the present invention, and such descriptions will be omitted here.

[0023] figure 1 The hardware block diagram for implementing the method is given, and the logic, arithmetic calculation and control of the method are realized on the controller (1). The lateral acceleration sensor (8) inputs the detected lateral acceleration of the vehicle to the control...

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Abstract

The invention discloses a method for detecting the side turnover of a vehicle. The active braking stimulation is applied to left and right wheels (2) and (6) on a wheel axle through brakes (3) and (5) with active braking functions, so as to acquire wheel angular speed and angular acceleration responses of the wheels under the braking stimulation, and the longitudinal acting force, which acts on the wheels, of a road surface is calculated by a wheel rotation kinetic equation. In the condition of presuming that the road surface adhesion of the left and the right wheels is the same and specific, nominal loads on the left and the right wheels are estimated by utilizing a relation among the longitudinal force, a slip rate and a wheel load in a tire model, and the nominal loads approximately have a proportional relation with actual loads on the wheels. Therefore, the transfer rate of a transverse load of the vehicle can be accurately estimated by utilizing the nominal loads, so as to judge the side turnover risk of the vehicle. The method is not influenced by the structural parameter of the vehicle, and the accuracy and the reliability of predicting the side overturn are high.

Description

technical field [0001] The invention relates to the technical field of vehicle safety, in particular, to rollover risk detection when a vehicle turns at high speed. Background technique [0002] With the vigorous development of the automobile industry, the number of automobiles is increasing all over the world, and automobiles are playing an increasingly important role in human daily life, becoming an essential means of transportation for human beings. The improvement of engine technology and the development of automotive electronic control technology further increase the driving speed, which leads to the problem of vehicle driving safety. [0003] With the development of automobile safety technology, various devices and systems aimed at automobile safety are applied to automobiles. In recent years, due to the increase in the ratio of human life and property loss caused by vehicle rollover accidents and secondary accidents caused by rollover, the lateral stability of vehicl...

Claims

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Application Information

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IPC IPC(8): B60W40/10
CPCB60W40/109
Inventor 黄智寇胜伟
Owner HUNAN UNIV
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