Passive magnetorheological tensile damping adaptive control method and device

Abstract

The invention discloses passive magnetorheological tensile damping adaptive control method and device. A soft magnet inner cylinder is arranged in an outer cylinder, both ends of a giant magnetostrictive material arranged in the soft magnet inner cylinder are respectively connected with one end of an upper permanent magnet and one end of a lower permanent magnet, the other end of the upper permanent magnet and the other end of the lower permanent magnet are respectively connected with one end of an upper field yoke and one end of a lower field yoke, the other end of the upper field yoke is connected with one end of a piston rod in the soft magnet inner cylinder, the other end of the piston rod extends out of an end cover, a T-shaped guide piston is arranged in a hole at the lower end of the soft magnet inner cylinder, the other end of the lower field yoke is connected with the large end of the T-shaped guide piston, and the small end of the T-shaped guide piston is sleeved with a spring and arranged in a center hole of a bottom cover; an input magnetic loop is formed by adopting the permanent magnets, the field yokes and magnetorheological fluid media; and an output magnetic loop is formed by adopting the giant magnetostrictive material, the permanent magnets, the field yokes, the magnetorheological fluid media and soft magnet materials. The invention omits coils and an external power supply and can realize the conversion from vibration mechanical energy of a controlled structure to magnetic field energy by only using few materials.

Description

technical field

[0001] The invention relates to magnetorheological damping technology, in particular to a passive magnetorheological tensile damping adaptive control method and device. Background technique

[0002] The magnetorheological damping technology uses magnetorheological fluid or magnetorheological elastomer as the damping element, and uses the magnetorheological effect (Magnetorheological Effect) to realize the damping effect. The magnetorheological damping device made by utilizing the magnetorheological effect has the characteristics of simple structure, quick response, easy control, low energy consumption, large damping force and wide adjustable range of damping force. It has been widely used in vehicle suspension systems, building structures (such as bridges, dams, high-rise buildings, etc.), brakes and clutches, recoil control of naval guns in military equipment, and vibration reduction of helicopter rotors. Active and semi-active control of vibrating structur...

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