Iron-gallium alloy series-driven inverse magnetostrictive driver and method of use

Abstract

The invention discloses an iron gallium alloy series drive inverse magnetostrictive driving device which comprises a rotating electric motor and an driving device; the driving device comprises an upper magnetic iron core (1) and a lower magnetic iron core (3), a gap is formed between the upper magnetic iron core (1) and the lower magnetic iron core (3), and a permanent magnet (4) and an iron gallium alloy (5) which are parallel to each other are arranged in the gap between the upper magnetic iron core (1) and the lower magnetic iron core (3); the iron gallium alloy (5) penetrates through the upper magnetic iron core (1) ; relative to the gap between the upper magnetic iron core (1) and the lower magnetic iron core (3), a rotor iron core (6) is arranged on an output shaft of the rotating electric motor, and the rotor iron core is matched with the gap between the upper magnetic iron core (1) and the lower magnetic iron core (3) in a clearance fit mode.

Description

technical field [0001] The invention relates to a magnetostrictive driver capable of realizing micron positioning accuracy, in particular, a permanent magnet is used to provide a driving magnetic field for an iron-gallium alloy magnetostrictive material, and the magnetostrictive material reverse hysteresis effect is used to change the driving magnetic field of the iron-gallium alloy, thereby changing The telescopic length of Fe-Gallium alloy, the actuators can be used in series, and the micron-level large-stroke positioning can be directly realized through the rotation motor drive. Background technique [0002] Smart materials, such as piezoelectric ceramics and magnetostrictive materials, enable micron-scale positioning. After the voltage is applied to the piezoelectric ceramics, the micro-displacement positioning is realized through the piezoelectric forward effect (reverse effect of the piezoelectric ceramics), and the small displacement of the piezoelectric ceramics is p...

AI Technical Summary

Problems solved by technology

The disadvantage of piezoelectric ceramics is that the material itself is relatively brittle, and the tangential load capacity is limited

The disadvantage of this driving method is that the energy consumption is large and the temperature is high.

Moreover, most of the currently used magnetostrictive actuators are only for single use, and cannot achieve large stroke control by stacking multiple pieces like piezoelectric ceramics.

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