Impact test bed of magneto-rheological damper and impact test device

Abstract

The invention discloses an impact test bed of magneto-rheological damper and an impact test device. The impact test bed comprises a test bed which comprises two bases and a plurality of guide rails horizontally arranged on the two bases, a mass block arranged on the guide rail in a sliding way, an impact generating device which is arranged at one end of the guide rail and fits the mass block, a buffer which is arranged at the other end of the guide rail and corresponds to the mass block, the magneto-rheological damper connected with the mass block, a sensor arranged on the mass block or the magneto-rheological damper or the test bed respectively, an impact signal processor electrically connected with the sensor, and a current controller electrically connected with the sensor and the magneto-rheological damper respectively, wherein the impact signal processor acquires and processes a signal from the sensor and outputs a voltage signal to the current controller; and the current controller controls the magnitude of a damping force produced by the magneto-rheological damper by adjusting output current according to the voltage signal. The impact test bed and the impact test device can be used for testing the dynamic characteristics of the magneto-rheological damper under the action of an impact load, and verifying the effectiveness of a control method.

Description

technical field [0001] The invention relates to a characteristic test device of a magneto-rheological shock absorber, and more particularly relates to a shock test bench and a shock test device of a magneto-rheological shock absorber. Background technique [0002] Magnetorheological fluid is a smart material with controllable output damping. Under the action of an external magnetic field, magnetorheological fluid can achieve reversible conversion from liquid to solid in milliseconds, and the conversion process can be controlled by changing the magnetic field. . Compared with electrorheological fluids, magnetorheological fluids have the advantages of high shear yield strength, low working voltage, and wide temperature range. The magnetorheological shock absorber made of the excellent characteristics of magnetorheological fluid has the characteristics of small size, light weight, low energy consumption, large and controllable output damping force, quick response, and wide adj...

AI Technical Summary

Problems solved by technology

At present, magnetorheological shock absorbers have been well researched and used in the environment of random loads (such as automobile suspension, building and bridge seismic design) at home and abroad. However, the dynamics of magnetorheological shock absorbers under impact loads However, there are still gaps in the study of mechanical properties and semi-active control strategies.

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