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Vehicle stability experimental device

An experimental device and stability technology, applied in the direction of measuring devices, vehicle testing, instruments, etc., can solve the problems of real vehicle instability, loss of experimental devices and experimental equipment, and large critical speed of vehicle instability

Active Publication Date: 2018-11-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the critical speed of instability of the actual vehicle is often very large, if the desired result is obtained through the actual vehicle experiment, it may bring irreparable losses to the experimental device and experimental equipment, and may cause very serious consequences
Therefore, real vehicle instability experiments are extremely rare

Method used

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  • Vehicle stability experimental device
  • Vehicle stability experimental device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see figure 1 , vehicle stability test device includes: belt 1, DC motor 2, PLC module 3 (for example: Mitsubishi PLC module), speed display module 4, motor controller 5, front roller 6, camera 7, grid laser 8, laser bracket 9. Support platform 10, tension sensor and signal amplifier 11, rear end roller 12, traction rope 13 and vehicle model 14. Among them, the above-mentioned devices 1-13 are combined to form an experimental platform.

[0039] Wherein, the DC motor 2 is fixed on the supporting platform 10, and a roller (i.e., a front-end roller 6 and a rear-end roller 12) is respectively installed at the front and rear ends of the support platform 10, and the belt 1 is set on the rollers at the front and rear ends, and the front-end roller 6 passes through the conveyor belt It is connected to the DC motor 2, the DC motor 2 is connected to the motor controller 5 through wires, and the PLC module 3 is connected to the speed display module 4 and the motor controller 5 thr...

Embodiment 2

[0044] The solution in Embodiment 1 is further introduced in the car scene below, see the description below for details:

[0045] see figure 1 , turn on the power supply of the experimental platform, the Mitsubishi PLC module 3 runs the PLC program, outputs the voltage signal to the motor controller 5 through A / D conversion, and displays the speed value on the speed display module 4 at the same time, at this time the DC motor 2 of the experimental platform starts, Belt 1 starts running.

[0046] During the working process, the grid laser 8 will project grid lines of a certain area to the experimental platform (consisting of devices 1-13), such as figure 2 As shown, the specific size and total projected area of ​​each grid are measured and marked on the vehicle model, the camera shoots the experimental platform, and the real-time lateral displacement and attitude of the vehicle model can be obtained by using image processing technology. At the same time, the tension sensor a...

Embodiment 3

[0050] The scheme in embodiment 1 is further introduced in the train scene below, see the following description for details:

[0051] see figure 1 , turn on the power of the experimental platform, the Mitsubishi PLC module 3 runs the PLC program, outputs the voltage signal to the motor controller 5 through A / D conversion, and displays the speed value on the speed display module 4 at the same time, at this time the DC motor 2 of the experimental platform starts, Belt 1 starts running.

[0052] During the working process, the grid laser 8 will project grid lines of a certain area to the experimental platform (consisting of devices 1-13), such as image 3 As shown, the specific size and total projected area of ​​each grid are measured, and marked on each carriage of the train model, the camera shoots the experimental platform, and the real-time lateral view of the train model can be obtained by using image processing technology. displacement and posture. At the same time, the ...

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PUM

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Abstract

The invention discloses a vehicle stability experimental device, comprising a road simulation system which comprises a belt, a drum, and a DC motor; the experimental device further comprises vehicle models which are scaled models similar to actual vehicle structures, and the specific types include an automobile model, a train model, a motorcycle model and an aircraft model, etc.; the experimentaldevice further comprises a data acquisition system, a tension sensor and a signal amplifier being arranged at the tail end of an experimental platform, the tension sensor being connected with the vehicle model through a thin pulling rope, an externally connected upper computer acquiring tension data of the vehicle models through a data acquisition card, and a grid laser fixed on a support measuring the real-time lateral displacement and postures of the vehicle models. The vehicle stability experimental device provided by the invention can carry out stability experiments on the various vehiclemodels, provides basic conditions for the research of a vehicle instability phenomenon and instability mechanism, has a wide application range, and has feasibility.

Description

technical field [0001] The invention relates to the field of vehicle ground dynamics experiments, in particular to a vehicle stability experiment device. Background technique [0002] With the increase of vehicle speed, the study of vehicle dynamics is extremely important. Vehicle instability will not only affect the ride comfort, but also may lead to serious consequences of vehicle crash. Therefore, vehicle stability, as one of the most basic indicators of vehicle dynamic performance, is the primary consideration of vehicle dynamics research. The critical speed of vehicle instability and the mechanism of instability are the main contents of vehicle stability research. The former determines the maximum allowable speed of the vehicle, and the latter plays an important guiding role in the control and prevention of instability. [0003] Because the destabilizing critical speed of the actual vehicle is often very large, if the desired result is obtained through the actual vehi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M17/00
CPCG01M17/00
Inventor 吴志强张慧跃段绪星
Owner TIANJIN UNIV
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