Universal functional safety test platform for chassis

By combining magnetorheological fluid and electromagnetic coil arrays, dynamic adjustment of the friction coefficient of the chassis test platform is achieved, solving the problems of narrow adjustment range and slow response speed in the existing technology and improving the accuracy and comprehensiveness of the test.

CN120651548APending Publication Date: 2025-09-16CHANGCHUN AUTOMOTIVE TEST CENT
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Patent Information

Application Number
CN202510793256.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-13
Publication Date
2025-09-16

AI Technical Summary

Technical Problem

Existing chassis test platforms find it difficult to achieve dynamic and precise control of the friction coefficient, and are unable to simulate complex road conditions such as ice, snow, accumulated water, and gravel. They also have slow response speeds and narrow adjustment ranges, resulting in incomplete coverage of test scenarios and insufficient data authenticity.

Method used

The friction adjustment mechanism combines magnetorheological fluid and electromagnetic coil array. The electromagnetic coil adjusts the shape of the magnetorheological fluid to achieve rapid adjustment of the friction coefficient. It is equipped with a roller, clamping mechanism and host computer to simulate various test scenarios.

Benefits of technology

It improves the accuracy and comprehensiveness of chassis testing, can simulate a variety of road conditions, and enhances the authenticity and coverage of test results.

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Abstract

The invention provides a chassis universal function safety test platform which comprises a platform plate, a roller, a clamping mechanism, an upper computer and a friction adjusting mechanism. The friction adjusting mechanism comprises magnetorheological fluid, a covering film, an electromagnetic coil array, an electric sliding table, a liquid pump, a filtering pipeline, a magnetic sieve plate, an L-shaped pipe, a transverse pipe, a telescopic pipe, an insertion pipe, a top plate, a first electric push rod and a conveying pipe, the wheels make contact with the magnetorheological fluid through the covering film, and a magnetic field generated by the electromagnetic coil array can change the state of the magnetorheological fluid; the magneto-rheological fluid can be switched between a liquid state and a semi-solid state, road surfaces with different friction coefficients are simulated, rich and comprehensive test scenes are provided, the accuracy of a chassis test result is improved, meanwhile, the magneto-rheological fluid can enter the filter pipeline under the action of the liquid pump, metal scraps are filtered through the magnetic sieve plates arranged in the filter pipeline in a gradient mode, and the test efficiency is improved. Failure caused by agglomeration effect is avoided, influence on magnetic field intensity is reduced, and accuracy of test results is further guaranteed.
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