Commercial vehicle anti-lock braking system test bench and test method thereof

Abstract

The invention provides a commercial vehicle anti-lock braking system test bench and a test method thereof. The test bench comprises a braking system and a test system, wherein the test system can testthe advantages and the disadvantages of a control strategy, and control a solenoid valve in the braking system to regulate the pressure of a braking air chamber. When brake input is simulated, a dataacquisition module acquires air pressure data of the braking air chamber, a target machine simulates the changed vehicle running state, and the solenoid valve is regulated and controlled according tothe running state data of the vehicle, so that the purpose of testing a built-in control strategy of the test system is achieved. The commercial vehicle anti-lock braking system test bench is good intesting effect, can detect the braking performance of a vehicle provided with ABS or EBS, can adapt to detection and testing of the braking performance of vehicles with different axle distances, different wheel distances and different weights, can detect the braking performance of four wheels of the vehicle at the same time, and automatically and accurately detects braking performance parametersof the vehicle in real time.

Description

technical field [0001] The invention relates to the technical field of automobile safety, in particular to a test bench for an anti-lock brake system of a commercial vehicle and a test method thereof. Background technique [0002] Anti-lock braking system, referred to as ABS, can automatically control the braking force of the brakes when the car is braking, so that the wheels are not locked and are in a state of rolling and sliding, so as to ensure the adhesion between the wheels and the ground at the maximum. . [0003] In the existing ABS system testing method, the tire model adopted is to relax the slip rate, and then use the effective slip rate obtained by relaxation to calculate the tire characteristics. However, there are situations where the existing model cannot calculate the characteristics of the tire. For example, pushing a stationary car hard, obviously the tire will be subject to ground reaction force. Since the tire does not roll and has no slip rate, the curr...

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Problems solved by technology

However, there are situations where the existing model cannot calculate the characteristics of the tire. For example, pushing a stationary car hard, obviously the tire will be subject to ground reaction force. Since the tire does not roll and has no slip rate, the current model cannot calculate this. Therefore, it is impossible to effectively test the braking effect of the ABS control strategy

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