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Detection method for vehicle tilting state

A state detection and vehicle side technology, applied in the field of vehicle roll state detection, can solve the problems of inability to obtain vehicle roll state, difficult vehicle roll control, etc., and achieve the effect of avoiding vehicle rollover accidents

Active Publication Date: 2015-01-21
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the sensors that can be used to measure the lateral motion state of vehicles mainly include lateral acceleration sensors, but the current installation of lateral acceleration sensors and sensor information processing methods cannot obtain effective vehicle roll states, and it is difficult to be used for vehicle roll control

Method used

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  • Detection method for vehicle tilting state
  • Detection method for vehicle tilting state
  • Detection method for vehicle tilting state

Examples

Experimental program
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example

[0028] Example: During the rolling motion of the vehicle, the sensor forms an included angle with the earth coordinate system together with the vehicle body (i.e. vehicle roll angle). Next, according to the vehicle roll state detection method, the vehicle roll angle and lateral acceleration information is obtained through sensor biaxial acceleration collection.

[0029] 1) The acceleration in two directions of abv=-9.6(m / s2) and abh=-3(m / s2) is collected, and the vehicle roll angle and the lateral acceleration of the vehicle relative to the earth coordinate system are obtained through this method.

[0030] 2) Calculate vehicle roll angle and lateral acceleration information according to formula 3.

[0031]

[0032] 3) Calculate the lateral acceleration ay=-2.26(m / s2) and roll angle under this condition which is

[0033] 4) The calculated roll angle at this time is within the set roll range [-10°, 10°], which meets the requirements in step (3) of the summary of the in...

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Abstract

The invention relates to a detection method for a vehicle tilting state. The detection method comprises the following steps of firstly acquiring a lateral acceleration (a[bh]) and a vertical-to-ground acceleration (a[bv]) of the vehicle; then obtaining a vehicle tilting angle (Phi) and a lateral acceleration (ay) of the vehicle in relative to a geodetic coordinate system; comparing the obtained vehicle tilting angle (Phi) with a preset tilting range and determining to obtain the vehicle tilting state. The detection method obtains the vehicle tilting state by directly calculating the vehicle tilting angle by using a biaxial acceleration sensor rather than indirect reflection through a change rule of the lateral acceleration in vehicle tilting movement in the prior art, can acquire effective vehicle tilting state information directly and rapidly, provides effective technical support for subsequent tilting control and early warning, and prevents vehicle tilting accidents from happening.

Description

technical field [0001] The invention belongs to the technical field of vehicle roll control, and relates to a vehicle roll state detection method. Background technique [0002] When the vehicle is subjected to lateral acceleration, it will tilt around its own roll center, resulting in vehicle roll. If the roll exceeds a certain level, the comfort and handling stability of the vehicle will deteriorate, and even the vehicle will roll over, resulting in traffic accidents. The vehicle roll control analyzes the vehicle roll state and judges the potential rollover trend, thereby improving the safety of the vehicle. At present, the sensors that can be used to measure the lateral motion state of vehicles mainly include lateral acceleration sensors, but the current installation of lateral acceleration sensors and sensor information processing methods cannot obtain effective vehicle roll states, and are difficult to be used for vehicle roll control. Contents of the invention [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C9/00
CPCG01C9/00B60R21/0132B60W30/02B60W40/112B60W2520/125B60W2520/18
Inventor 刘伟汤望李克强李会仙
Owner ZHENGZHOU YUTONG BUS CO LTD
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