Two-channel magnetorheological damper with passage gating capability

Abstract

The invention relates to a dual-passage magnetorheological damper with passage gating capability; a working cylinder, a piston body, an excitation component, an magnetic shield sleeve, a piston rod, a guiding ring, a sealing component, a compensating device and the like are jointly compose the whole dual-passage magnetorheological damper; the structural design ensures the realization of passage gating capability of the dual-passage magnetorheological damper and greatly simplifies the design method of the existing magnetorheological damper; the clearance between the piston component and the excitation component forms an internal passage while the clearance between the piston component and the working cylinder forms an external passage; when external excitation current is not applied, the magnetorheological fluid mainly passes through the internal passage and then the damping force is minimum; when the excitation current achieves saturation, the magnetorheological fluid mainly passes through the external passage and then the damping force is maximum. By the passage gating effect of the flowing of the magnetorheological fluid, the stepless change between the minimum value and the maximum value of the damping force is realized.

Description

Technical field: [0001] The invention belongs to the technical field of intelligent structure system and structure vibration control, and can be specifically applied to the vibration control and application of vehicles, engineering machinery, weapon platforms and other machinery, civil structure systems, and specifically relates to a dual-channel magneto-rheological system with channel gating capability Dampers and their associated design methods. Background technique: [0002] In the field of structural vibration control technology, people usually use elastic elements and damping elements to achieve vibration control. The damping elements usually use oil shock absorbers, which use oil to pass through flow channels with variable cross-sectional areas to generate vibrations that are compatible with the external environment. of damping force. This method requires the use of a valve structure to control the passage area of ​​the flow channel, resulting in low structural reliab...

AI Technical Summary

Problems solved by technology

[0003] The existing magnetorheological dampers have different structures, and all of them can realize the vibration semi-active control function of the controlled object, but they generally have the characteristics of complex structure and cumbersome design, especially the magnetorheological damper needs to be considered in the design process. The shear yield characteristics of liquid materials make it difficult to achieve serialization and generalization of magnetorheological dampers, which greatly limits its application space

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