Test bed

Abstract

The invention relates to a test bed which is specially used for testing the resistance characteristic of a shock absorber of a magnetic functional fluid containing micron-scale and nano-scale magneticparticles, namely, testing the influence of different mixing ratios, electromagnetic field intensities and loading loads of micron-scale and nano-scale magnetic particles in the magnetic functional fluid of the shock absorber on the shock absorption resistance of the shock absorber. The test bed measures position change of a measured object in a non-contact mode through using a laser displacementsensor, and achieves the technical effects of high measurement precision, high sensitivity and accurate and efficient signal transmission for the micro displacement change of a shock absorber piston;and a test result is directly displayed through an oscilloscope and is more visual and faster. A pneumatic loading module is designed, through the design of a control mechanism, an air inlet valve, an air outlet valve and a pilot pressure regulating valve, the test bed realizes pneumatic loading, pressure maintaining and automatic adjusting control over loading loads, guarantees the loading accuracy and stability, and has large adjustable range of the loading loads, so that the testable working condition range of the test bed is larger.

Description

technical field [0001] The invention relates to the field of vibrator testing, in particular to a test bench specially used for testing the resistance characteristics of a shock absorber. Background technique [0002] The shock absorber of the magnetic functional fluid with micron-scale and nano-scale magnetic particles can control the shock-absorbing resistance by controlling the strength of the magnetic field applied to the magnetic functional fluid, thereby controlling the shock-absorbing effect of the shock absorber. The mixing ratio of magnetic particles with different sizes and structures in magnetic functional fluid is the main influencing factor of the size of magnetic particle clusters in magnetic functional fluid, the cohesive force between magnetic particles and the magnitude of magnetic force generated by magnetic particles by magnetic field strength. Therefore, the mixing ratio of micron-sized magnetic particles and nano-sized magnetic particles in the magnetic ...

AI Technical Summary

Problems solved by technology

[0003] 1. It is difficult for the existing vibrator test bench to detect displacement changes by means of dynamic and accurate test capture and signal collection and transmission of small displacement changes. The analysis of signals is not intelligent enough to guarantee the accuracy and credibility of test results

[0004] 2. The existing vibrator test bench does not control the load loaded on the vibrator accurately and efficiently, and it is difficult to maintain a stable loading load, which cannot guarantee the accuracy and reliability of the test results

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