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An intelligent vehicle vertical motion test bench for vehicle dynamics teaching

A technology of vehicle dynamics and vertical movement, applied in the field of vehicle testing, can solve the problems of many teaching contents, no complete vehicle model, and lack of in-depth understanding of students

Active Publication Date: 2022-03-04
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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  • An intelligent vehicle vertical motion test bench for vehicle dynamics teaching
  • An intelligent vehicle vertical motion test bench for vehicle dynamics teaching
  • An intelligent vehicle vertical motion 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 bench for vehicle dynamics teaching, comprising: a road simulation device, a wheel, a body mass block, a motor drive module, a voice coil motor, a coil spring, a control system, a body vertical displacement Sensors, wheel vertical displacement sensors, road condition sensors, displays, batteries; wheels, voice coil motors, coil springs, and body mass are installed on the vertical rails. By adopting the technical scheme of the present invention, students' understanding of the theoretical knowledge of vehicle dynamics can be enhanced, and students' ability to link theory with practice and solve practical problems can be cultivated through practical hands-on 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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Patent Type & Authority Patents(China)
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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