Two-axle vehicle centroid height static measurement method

A measurement method and center-of-mass technology, which is applied in the field of vehicle measurement, can solve the problems of time-consuming and labor-intensive measurement, the inability to distinguish the position of the center of mass of the sprung mass and the unsprung mass, and the need to fix the suspension, etc.

Active Publication Date: 2017-06-13
HENAN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a static and accurate measurement method for the height of the center of mass of the vehicle, so as to better solve the disadvantages of the static measurement of the center

Method used

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  • Two-axle vehicle centroid height static measurement method
  • Two-axle vehicle centroid height static measurement method
  • Two-axle vehicle centroid height static measurement method

Examples

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Embodiment 1

[0080] The static measurement method for the height of the center of mass of a two-axle vehicle provided by the application comprises the following steps:

[0081] (1) First, ensure that the test road surface is level, and then place the axle load gauge according to the wheelbase and wheelbase of the vehicle to be tested; after the vehicle enters the axle load gauge, turn off the engine, and put the vehicle in neutral and parking gears;

[0082] Use a plumb meter or a steel ruler to mark points A and O at the ground contact point of the front wheel, the center of the wheel and the fender respectively with a marker f and P f , and make sure that these three points are in a straight line;

[0083] Also mark points B and O at the ground contact point of the rear wheel, wheel center and fender r and P r , measure or determine the wheelbase L according to the factory parameters of the car;

[0084] Such as figure 1 As shown, record the following measurement data: Front wheel f...

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Abstract

The invention belongs to the technical field of vehicle measurement and particularly relates to a two-axle vehicle centroid height static measurement method. According to the technical principle, firstly, when a vehicle axle load changes, a tire flattening radius and a suspension deform, sprung mass and unsprung mass centroid heights change, and respective variations are measured through the scoring method; secondly, the geometrical relationship between the variations is determined according to the relationships between different inclination angles and front and rear axle loads of a vehicle, the torque balancing principle and the mass balancing principle, torque extraction is conducted on contact points of front wheels of the vehicle and the ground, a torque balancing equation is built, and the whole vehicle centroid height and the sprung and unsprung mass centroid heights of the vehicle in the horizontal placement state are obtained. The suspension does not need to be fixed, people only need to measure multiple sizes to avoid tedious labor and safety accidents caused by suspension fixing, and the measurement method is simple, economical, precise and widely applicable to two-axle vehicles.

Description

technical field [0001] The invention belongs to the technical field of vehicle measurement, and in particular relates to a patent application for a static measurement method for the height of the center of mass of a two-axle vehicle. Background technique [0002] The height of the vehicle's center of mass is an important parameter in vehicle power control, and it plays a very important role in the rolling stability and handling stability of the vehicle. In particular, vehicles with a high center of mass such as tank trucks, pump trucks and SUVs are prone to rollover under extreme conditions, and the degree of damage of rollover accidents is usually extremely high. [0003] Modern vehicles equipped with active roll control systems often need to accurately measure the height of the center of mass. Since the measurement of the height of the center of mass is one of the most important but difficult to measure parameters, it is of great application significance to accurately meas...

Claims

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Application Information

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IPC IPC(8): G01M1/12
CPCG01M1/12
Inventor 范小彬赵凯辉聂立新范炳絮王小松孙元魁赵紫像刘小平牛国庆
Owner HENAN POLYTECHNIC UNIV
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