Indoor vehicle ABS test-bed with variable adhesion coefficient

Abstract

The invention discloses a vehicle ABS test bed with changeable attachment coefficient and comprises a front and a back shaft frames, a front and a back fly wheel shafts, a transmission box and a telescopic transmission shaft; the front and the back shaft frames are respectively and symmetrically provided with a front left wheel, a front right wheel, a back left wheel and a back right wheel rollergroup and the front left wheel, the front right wheel, the back left wheel and the back right wheel roller group are totally uniform; each roller group is respectively connected with the output end of a torque controller through a transmission belt in correspondence and the input end of the torque controller is respectively and rigidly connected with the front and the back fly wheel shafts; the front and the back fly wheel shafts are connected with the telescopic transmission shaft through the transmission box to realize mutual synchronization; each fly wheel shaft is rigidly and symmetrically provided with two fly wheels with same turning inertia; the braking force of the wheel of the measured vehicle can be changed by controlling magnetizing current of the torque controller when the wheel is in lock braking and then the attachment coefficient of the road can be simulated. The invention can be widely applied in vehicle examination, ABS research and development, vehicle maintenance and service industry.

Description

technical field [0001] The invention relates to the field of automobile detection, in particular to a vehicle ABS test bench with variable adhesion coefficient. Background technique [0002] At present, in order to completely evaluate the working performance of the anti-lock braking system (ABS), it must be carried out through the road test method. One hundred mu, the site cost tens of millions of yuan. Such a runway is composed of road surfaces with various adhesion coefficients, so that the vehicle ABS performance can be accurately tested and evaluated, but the number of such sites is small, the construction and maintenance costs are very high, and the test time is long (8-10 hours / vehicle). The test cost is also high. Very high (50,000-60,000 yuan / vehicle) cannot be popularized, so it is very necessary to solve the problem of vehicle ABS indoor testing. [0003] Now there are some ABS test equipments that use old-fashioned inertial brake test benches to test the ABS of ...

AI Technical Summary

Problems solved by technology

Such a runway is composed of road surfaces with various adhesion coefficients, so that the vehicle ABS performance can be accurately tested and evaluated, but the number of such sites is small, the construction and maintenance costs are very high, and the test time is long (8-10 hours / vehicle). The test cost is also high. Very high (50,000-60,000 yuan / vehicle) cannot be popularized, so it is very necessary to solve the problem of vehicle ABS indoor testing

[0003] Now there are some ABS test equipments that use old-fashioned inertial brake test benches to test the ABS of the whole vehicle. This kind of test bench cannot simulate the adhesion coefficient of the road surface in the whole process, and the adhesion coefficient of the road surface changes when the automobile ABS is actually working. Especially under weather conditions such as rain, snow, ice, frost, etc., vehicle ABS can fully play its role, but the existing technology does not have the detection function under the above-mentioned special road conditions, and cannot be used for vehicle ABS performance and adaptability to special road surfaces. Carrying out effective testing does not play its due role in testing and evaluation

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