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Car rollover time measuring device and car rollover time calculation method

A technology of time measurement and time calculation, which is applied to vehicle components, transportation and packaging, elastic suspension, etc., can solve problems such as installation difficulties, errors, and difficulty in popularization and application, and achieve the effect of preventing rollover accidents

Inactive Publication Date: 2015-11-11
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are large errors in the measurement of vehicle state parameters such as vehicle roll angle and roll angular velocity, and there are certain difficulties in installation. Therefore, the existing vehicle rollover time prediction accuracy is poor, and it is difficult to popularize and apply

Method used

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  • Car rollover time measuring device and car rollover time calculation method
  • Car rollover time measuring device and car rollover time calculation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Such as figure 1 , figure 2 A vehicle rollover time measuring device shown includes left front wheel 1, left front suspension 2, left front wheel vertical load sensor 3, front axle 4, right front suspension 5, right front wheel 6, calculation unit 7, right front wheel Vertical load sensor 8, right rear wheel 9, right rear wheel vertical load sensor 10, right rear suspension 11, left rear suspension 12, left rear wheel 13, left rear wheel vertical load sensor 14, rear axle 15 , vehicle body 16; The two ends of front axle 4 are connected with left front wheel 1 and right front wheel 6 respectively, and the two ends of rear axle 15 are connected with left rear wheel 13 and right rear wheel 9 respectively; The upper end of left front suspension 2 is connected with vehicle body 16 is fixedly connected, the lower end of the left front suspension 2 is fixedly installed on the front axle 4 through the left front wheel vertical load sensor 3; the upper end of the right front s...

Embodiment 2

[0015] This embodiment provides a method for calculating the rollover time of a car. Before the car rolls over, the left front wheel vertical load sensor 3 can measure the vertical load on the left front wheel 1, and the right front wheel vertical load sensor 8 can measure the vertical load on the left front wheel. Measure the suffered vertical load of the right front wheel 6, the right rear wheel vertical load sensor 10 can measure the suffered vertical load of the right rear wheel 9, and the left rear wheel vertical load sensor 14 can measure the suffered vertical load of the left rear wheel 13. to the load, the calculation unit 7 according to the formula LTR=(F 1 +F 4 -F 2 -F 3 ) / (F 1 +F 2 +F 3 +F 4 ) to calculate the lateral load transfer rate LTR of the vehicle, and obtain the first-order change rate m of the lateral load transfer rate by performing a first-order differentiation on LTR, and obtain the second-order change rate a of the lateral load transfer rate by p...

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Abstract

The invention relates to a car rollover time measuring device and a car rollover time calculation method. Aiming at defects of the existing car rollover prediction research, the invention provides a car rollover time measuring device, which comprises a left front wheel vertical load sensor, a calculation unit, a right front wheel vertical load sensor, a right rear wheel vertical load sensor, a left rear wheel vertical load sensor, a car body and the like. The invention also provides the car rollover time calculation method. By using the invention, the rollover time in a car driving process can be calculated according to vertical loads of respective wheels of a car, so a vehicle-mounted control system or a driver can adjust a car driving state before the car is rolled over, and rollover accidents of the car can be prevented.

Description

technical field [0001] The invention relates to the technical field of vehicle rollover and rollover research, in particular to a vehicle rollover time measuring device and a calculation method thereof. Background technique [0002] Predicting vehicle rollover in advance plays a very important role in preventing traffic accidents. However, in the current research on vehicle rollover prediction and early warning, the vehicle rollover prediction is mainly carried out by detecting whether the vehicle's rollover evaluation index reaches the set static threshold. When it is detected that the rollover evaluation index has reached the rollover threshold, the car has already started Rollover, at this time, the driver makes corresponding operations to correct the driving state of the car, which often has hysteresis, and the anti-rollover effect is not ideal. A small number of researchers have proposed that if the car maintains the current driving state, by observing the time when th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60G17/018
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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