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Vehicle vertical motion intelligent test bench for vehicle dynamics teaching

A technology of vehicle dynamics and vertical motion, applied in the field of vehicle testing, can solve the problems of not building a complete vehicle model, students lacking in-depth understanding, and many teaching contents.

Active Publication Date: 2021-11-16
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the test bench only simulates the driving conditions of the vehicle by artificially adding loads, and does not build a model of the entire vehicle
Vehicle dynamics is an important basic course for students majoring in vehicles, but the teaching content is more and more abstract, and students often lack a deeper understanding through classroom learning.

Method used

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  • Vehicle vertical motion intelligent test bench for vehicle dynamics teaching
  • Vehicle vertical motion intelligent test bench for vehicle dynamics teaching
  • Vehicle vertical motion intelligent test bench for vehicle dynamics teaching

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Embodiment 1: basic test

[0053] In general suspension systems, the stiffness and damping coefficient are fixed after the suspension is installed. The basic test enables students to use the test bench to measure the characteristics of the suspension and have a basic understanding of the vertical motion of the suspension. The test steps are as follows:

[0054] 1) Check whether the test bench is normal, and record the basic parameters of the suspension system, such as body mass, suspension stiffness, damping coefficient, wheel mass (unsprung mass), and motor parameters.

[0055] 2) Install the road simulation belt on the pulley and power on the control system.

[0056] 3) Set the speed of the road simulation servo motor, and click the acquisition system to start signal acquisition. Continue to collect for 1 minute to obtain the vertical acceleration of the vehicle body, suspension turbulence, and wheel dynamic load data, and then set the motor speed to 0 to stop reco...

Embodiment 2

[0061] Embodiment 2: damping simulation test

[0062] The damping coefficient of the suspension system has a very important influence on the vertical dynamic response characteristics of the vehicle. In the teaching experiment, different damping coefficients can be simulated by the voice coil motor in this test bench, and the influence law of the damping coefficient on the suspension characteristics can be obtained more conveniently. The test process is as follows:

[0063] 1) Check whether the test bench is normal, and record the basic parameters of the suspension system, such as body mass, suspension stiffness, damping coefficient, wheel mass (unsprung mass), and motor parameters.

[0064] 2) Install the road simulation belt on the pulley and power on the control system.

[0065] 3) Set the damping simulation coefficient on the upper computer, and the control system will calculate the required motor current according to the formula (1), so as to control the output force of ...

Embodiment 3

[0071] Embodiment 3: active control experiment

[0072] The vehicle vertical motion intelligent test bench of the invention can not only realize the simulation of different damping and rigidity, but also realize the active suspension function. Students can design different control laws according to different control objectives. The optimization goal is to minimize the dynamic loads on the body and tires while keeping the suspension travel to a minimum. Taking the vertical displacement of the vehicle body as an example, the test specifically includes:

[0073] 1) Check whether the test bench is normal, and record the basic parameters of the suspension system, such as body mass, suspension stiffness, damping coefficient, wheel mass (unsprung mass), and motor parameters.

[0074] 2) Install the road simulation belt on the pulley and power on the control system.

[0075] 3) Record the initial vehicle body position, set the simulated suspension test bench to the active control m...

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Abstract

The invention discloses a vehicle vertical motion intelligent test bed for vehicle dynamics teaching. The vehicle vertical motion intelligent test bed comprises a road simulation device, wheels, a vehicle body mass block, a motor driving module, a voice coil motor, a spiral spring, a control system, a vehicle body vertical displacement sensor, a wheel vertical displacement sensor, a road surface condition sensor, a display and a battery. The wheel, the voice coil motor, the spiral spring and the vehicle body mass block are installed on the vertical guide rail. By adopting the technical scheme of the invention, the understanding of the students on the theoretical knowledge of vehicle dynamics can be enhanced, and the ability of the students of linking the theory with the reality and solving the practical problem can be cultivated through practical manual operation.

Description

technical field [0001] The invention belongs to the technical field of vehicle testing, and in particular relates to an intelligent vehicle vertical motion test bench for vehicle dynamics teaching. Background technique [0002] With the development of the automobile industry, the drum test bench has been used more and more to study the force of the wheel on a specific road surface. However, the test bench only simulates the driving conditions of the vehicle by artificially adding loads, and does not build a model of the entire vehicle. Vehicle dynamics is an important basic course for students majoring in vehicles, but the teaching content is more and more abstract, and students often lack a deeper understanding through classroom learning. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a vehicle vertical motion intelligent test bench for vehicle dynamics teaching, which can enhance students' understanding of ve...

Claims

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Application Information

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IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 吴维高鑫罗俊林苑士华李鑫勇
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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