Vehicle mass and center of mass position dynamic identification system

A technology for automobiles and centroids, applied in measuring devices, static/dynamic balance testing, weighing, etc., can solve problems such as difficulty in ensuring accuracy, achieve obvious significance, simple sensor layout, and improved active control effects

Active Publication Date: 2016-06-22
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Vehicle mass and center of mass position dynamic identification system
  • Vehicle mass and center of mass position dynamic identification system
  • Vehicle mass and center of mass position dynamic identification system

Examples

Experimental program
Comparison scheme
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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] Such as figure 1 , the present inv...

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PUM

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Abstract

The invention discloses a dynamic identification system for vehicle mass and center of mass position. Corresponding air springs are installed on each wheel, an air pressure sensor for measuring pressure is installed in the air spring airbag, and a vehicle speed sensor, a vehicle body position sensor and an acceleration sensor are installed near the center of mass of the vehicle body. The door is equipped with a door opening and closing sensor, an air pressure sensor, a vehicle speed sensor, a body position sensor, an acceleration sensor and a door opening and closing sensor are connected to the data processing unit through a data transmission device to measure the real-time mass of the vehicle and the dynamic position of the center of mass. The invention has the advantage of being able to provide dynamic parameters for automobile control, so that the active control effects of automobile anti-rolling control, braking control, start-up acceleration control, etc. are obviously improved.

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 Patents(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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