Floating plate track magneto-rheological damping control method and device

Abstract

The embodiment of the invention provides a magnetorheological damping control method and device for a floating slab track. The magnetorheological damping control method for the floating slab track includes the steps that the best values of the magnetorheological damping force, the displacement threshold value and the response retardation time of a magnetorheological damper are obtained according to a vehicle-magnetorheological damping semi-active vibration isolation floating slab track vertical coupling system dynamics model; and the magnetorheological damping force, the displacement threshold value and the response retardation time of the magnetorheological damper are controlled to be adjusted to the best values through a terrace semi-active switch of the magnetorheological damper. According to the magnetorheological damping control method and device for the floating slab track, the magnetorheological damper is introduced into the traditional floating slab track, the magnetorheological damper is controlled by adjusting the values of the parameters such as the magnetorheological damping force, the displacement threshold value and the response retardation time of the magnetorheological damper, the vibration amplification phenomenon near the inherent frequency of the floating slab track is effectively inhibited, and meanwhile the maximum vertical vibration displacement of the floating slab track is obviously reduced, so that safety of a wheel track is improved.

Description

technical field [0001] The invention relates to the field of rail vibration and noise reduction, in particular to a method and device for controlling magnetorheological damping of a floating plate rail. Background technique [0002] In order to control the vibration and noise of the subway, vibration and noise reduction measures are often taken on the track. In recent years, high-elastic fasteners, elastic sleepers and rubber or steel spring floating slab tracks have appeared in my country's subway field. Under the same or comparable conditions, the steel spring floating slab track is currently the best damping track for vibration and noise reduction. However, the damping effect of the floating slab track is limited by its natural frequency. If one wants to further improve the damping effect of the floating slab track, one must either reduce the support stiffness of the floating slab or increase the mass of the floating slab. Increasing the mass will inevitably increase t...

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Problems solved by technology

But it is a pity that this technology has not been applied to rail vibration reduction technology

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