Large Displacement Output Magnetostrictive Actuator

Abstract

The invention discloses a large-displacement output magnetostrictive driver. According to the large-displacement output magnetostrictive driver, a magnetostrictive rod is driven to perform extensible movement through magnetic fields generated by an electrified coil, a combined displacement amplifying mechanism which is formed by double sliding blocks, double connecting rods and a single crank amplifies and outputs infinitesimal displacement generated by the magnetostrictive rod to be large displacement, magnification times can be adjusted according to central positions of rotary pairs between the two connecting rods and the crank, meanwhile a plurality of combined displacement amplifying mechanisms which are formed by the double sliding blocks, the double connecting rods and the single cranks can be in cascade connection according to requirements to increase the displacement output in a multiplied mode. Compared with a traditional direct output magnetostrictive driver, the large-displacement output magnetostrictive driver has the advantages of achieving high response speed, high accuracy, high electromechanical conversion rate and amplification coefficient adjustable large-displacement output and expanding application ranges of the magnetostrictive driver.

Description

[0001] field of invention [0002] The invention relates to a magnetostrictive driver, in particular to a magnetostrictive driver which utilizes a crank-link combination mechanism to realize output displacement amplification. Background technique [0003] Magnetostrictive actuators are actuators made using the phenomenon that the external dimensions of some magnetic bodies will change when a magnetic field is applied to the outside. Due to its simple structure, high electromechanical conversion efficiency, fast response speed, large output force, and high displacement output precision, the magnetostrictive drive is widely used in sonar's underwater acoustic transducer technology, electroacoustic transducer technology, vibration reduction and anti-vibration , Noise reduction and anti-noise systems and many other micro-displacement drives have been widely used. Although the output force of the magnetostrictor can be very large, the displacement produced by the magnetostrictor i...

AI Technical Summary

Problems solved by technology

Although the output force of the magnetostrictor can be very large, the displacement produced by the magnetostrictor is usually on the order of microns, which limits its use in many applications that not only require high response frequency, large output force, and high precision, but also require large Applications for displacement output

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