Dynamic identification system for automobile quality and mass center position

A technology for automobiles and centroid, applied in measurement devices, static/dynamic balance testing, weighing, etc., can solve problems such as difficulty in ensuring accuracy, and achieve the effect of obvious significance, simple sensor arrangement, and improved active control effect.

Active Publication Date: 2014-03-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are difficult to accurately consider the air resistance of the car and the tire resistance of the road surface. At the same time, the engine torque output is a dynamic process, and the accuracy is difficult to guarantee.

Method used

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  • Dynamic identification system for automobile quality and mass center position
  • Dynamic identification system for automobile quality and mass center position
  • Dynamic identification system for automobile quality and mass center position

Examples

Experimental program
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Embodiment Construction

[0027] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0028] The present invention preliminarily obtains the change relationship between the wheel bearing load and the internal pressure of the air spring according to the actual vehicle load test, and the specific test method of the change relationship between the wheel bearing load and the air spring internal pressure is as follows: taking a four-wheeled vehicle as an example, the unloaded vehicle Four load measuring sensors are placed under the four wheels to read the load data of each wheel at this time. Add different mass loads to the vehicle. At this time, the four wheel load changes are read according to the load measurement sensor, and the record items correspond to the four air spring pressure characteristic changes, and then the relationship between the wheel load change and the air spring pressure change is obtained.

[0029] like figure 1 , the present invent...

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Abstract

The invention discloses a dynamic identification system for automobile quality and the mass center position. Each automobile wheel is provided with a corresponding air spring, an airbag of the air spring is provided with an air pressure sensor which is used for measuring the pressure, an automobile speed sensor, an automobile body position sensor and an acceleration sensor are arranged nearby the mass center of an automobile body, an automobile door is provided with an automobile door opening/closing sensor, the air pressure sensor, the automobile speed sensor, the automobile body position sensor, the acceleration sensor and the automobile door opening/closing sensor are connected with a data processing unit through a data transmission device, and thus real-time quality of an automobile and the dynamic position of the mass center can be measured. The dynamic identification system for the automobile quality and the mass center position, disclosed by the invention, has the advantages that dynamic parameters can be provided for automobile control, and thus active control effects such as anti-roll control, braking control and starting acceleration control of an automobile can be obviously increased.

Description

technical field [0001] The invention designs a system capable of dynamically identifying the vehicle mass and center-of-mass position of different occupants and different loads in the vehicle for the vehicle suspension with air springs. Background technique [0002] The quality of the car will change with different occupants or goods, and these changes have a great impact on the performance of the car, such as anti-roll performance, braking performance, etc. Therefore, determining the mass of the vehicle and the position of the center of mass during the driving process of the vehicle can make the judgment of the motion state of the vehicle more accurate during vehicle control, thereby optimizing the control effect and improving the performance of the vehicle in various aspects such as safety and comfort. [0003] The existing real-time identification method of the center of mass of the vehicle is determined according to the relationship between the engine output torque and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M1/12G01G19/10B60R16/02
Inventor 吴光强叶光湖黄焕军牛治东吴虎威杨家颖
Owner TONGJI UNIV
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