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Dynamic measuring device for position of automobile heeling center axis and confirming method thereof

A technology of dynamic measurement and central axis, which is applied in the direction of measuring devices, special data processing applications, instruments, etc., can solve the problems affecting the accuracy and effect of the anti-rollover control system, and achieve the effect of improving the research accuracy and effect

Active Publication Date: 2015-04-29
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the car rolls and rolls over, the position of the roll axis changes dynamically, and the position of the center axis of the roll will affect the accuracy and effect of the car's anti-rollover control system. Dynamic Measurement of Tilting Center Axis

Method used

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  • Dynamic measuring device for position of automobile heeling center axis and confirming method thereof
  • Dynamic measuring device for position of automobile heeling center axis and confirming method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] like figure 1 , figure 2 The vehicle roll center position dynamic measuring device shown includes a wheel 1, a vehicle speed sensor 2, a body 3, a center of mass sensing unit 4, a left front suspension 5, a left front wheel vertical load sensor 6, and a right front wheel vertical load sensor 9. Right front suspension 10, front axle 11, calculation unit 13, right rear wheel vertical load sensor 14, rear axle 15, right rear suspension 16, left rear wheel vertical load sensor 19, left rear suspension 20 The center of mass sensing unit 4 includes a lateral acceleration sensor, a yaw rate sensor and a roll angle sensor, which are fixedly installed at the center of mass of the vehicle; the two ends of the rear axle 15 and the front axle 11 are connected to the wheels 1; the left rear suspension The upper end of the 20 is fixedly connected with the vehicle body 3, and the lower end of the left rear suspension 20 is fixedly installed on the rear axle 15 through the left rear ...

Embodiment 2

[0015] This embodiment provides a method for determining the position of the central axis of vehicle roll. During the process of vehicle roll, the center of mass sensing unit 4 can measure the lateral acceleration, yaw rate, roll angular acceleration and roll angle at the center of mass of the vehicle. , the vehicle speed sensor 2 can measure the running speed of the automobile, and the left front wheel vertical load sensor 6, the right front wheel vertical load sensor 9, the right rear wheel vertical load sensor 14, and the left rear wheel vertical load sensor 19 can measure the load on each wheel. The vertical load of the calculation unit 13 according to the formula calculation unit according to the formula Deduce the sprung mass m distributed to the front axle of the car 1 , according to the formula Calculate the sprung mass m of the vehicle load distributed to the rear axle 2 ;according to the formula

[0016] Deduce the vertical distance h from the center of the fr...

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Abstract

The invention relates to a dynamic measuring device for a position of an automobile heeling center axis and a confirming method thereof. In order to overcome the defects of the present research on automobile heeling and lateral overturning, the invention provides the dynamic measuring device for the position of the automobile roll center axis. The dynamic measuring device comprises an automobile speed sensor, an automobile body, a mass center sensing unit, a left front suspension, a left front wheel vertical load sensor, a right front wheel vertical load sensor, a right front suspension, a calculating unit, a right rear wheel vertical load sensor, a right rear suspension, a left rear wheel vertical load sensor and a left rear suspension. The invention also relates to the confirming method for the position of the automobile roll center axis. The dynamic measuring device and the confirming method provided by the invention can be used for calculating the position of the automobile roll center axis when an automobile heels and laterally overturns according to the vertical loads of wheels of the automobile, the yaw velocity of the automobile, the heeling angle of the automobile and the driving speed of the automobile, so that the effect of an automobile lateral overturning predicting and lateral overturning preventing control system is effectively promoted.

Description

technical field [0001] The invention relates to the technical field of automobile roll and rollover research, in particular to a dynamic measuring device for the center axis position of the automobile roll and a determination method thereof. Background technique [0002] Vehicle roll stability is an important indicator to measure the safety performance of a vehicle. Large vehicle rolls or even rollovers may cause serious traffic accidents, which are second only to vehicle collisions. For a two-axle vehicle, the center axis of vehicle roll refers to the longitudinal instantaneous axis around which the vehicle body rolls relative to the ground. The intersection point of the cross section at the front axle is the front roll center of the car, and the intersection point with the cross section of the body at the rear axle is the rear roll center of the car, that is, the line connecting the front and rear roll centers of the car is the car roll center axis. Many scholars and com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00G01B21/00
Inventor 邱绪云高琦李爱娟曹凤萍刘永辉徐传燕王慧君李建英
Owner SHANDONG JIAOTONG UNIV
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