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Phase change temp controlling super magneto strictive extension microshifting actuator

A giant magnetostrictive and magnetostrictive rod technology, which is applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of magnetostrictive rod heating, etc. Achieve the effect of suppressing thermal elongation, simple driving power supply, and good output linearity

Inactive Publication Date: 2005-01-12
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a phase-change temperature-controlled giant magnetostrictive micro-displacement actuator, an actuating device that controls the output displacement through current, solves the heating problem of the magnetostrictive rod, and improves the precision of displacement control

Method used

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  • Phase change temp controlling super magneto strictive extension microshifting actuator

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Embodiment Construction

[0016] As shown in the drawings, the present invention includes a base 1, a temperature control sleeve 2, a magnetostrictive rod 3, a phase change material 4, a coil frame 5, a casing 6, a drive coil 7, a bias coil 8, an output push rod 9, Preload spring 10, upper end cover 11, preload nut 12. A magnetostrictive rod 3 is installed on the central small boss of the base 1, and a phase change temperature control device composed of a sleeve 2 and a phase change material 4 is installed outside the magnetostrictive rod 3. The coil skeleton 5 outside the phase change temperature control device is A drive coil 7 and a bias coil 8 are arranged sequentially from inside to outside. The joint between the temperature control sleeve 2 and the coil frame 5 is sealed, and a closed cavity containing phase change material is formed inside. The bias coil 8 is equipped with a shell 6, and the upper end of the magnetostrictive rod 3 is equipped with an output push rod 9, and the bosses on both si...

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Abstract

Magnetostrictive rod is installed on small boss at center of base. Phase change temperature control device is outside the magnetostrictive rod. Drive coil and bias winding on winding framework are setup outside of phase change temperature control device. Combination prepress mechanism composed of case, output push rod, prepress spring, upper cover and prepress nut are configured outside the bias winding. Input current inputting to magnetostrictive rod generates magnetic field drive. Controlling input current can control output displacement and output force of the actuator. Optimal operating condition can be adjusted through pre-stressing and biased magnetic field strength. Phase change temperature control device is added in order to guarantee displacement precision outputted from actuator. Features are lightweight, large output force, high precision.

Description

Technical field [0001] The invention relates to a phase-change temperature-controlled giant magnetostrictive micro-displacement actuator. Background technique [0002] Micro-displacement actuators have been widely used in ultra-precision machining, robotics, fluid machinery, vibration control, sonar systems and other fields. At present, the most widely used types are mechanical, hydraulic and piezoelectric. The frequency response of mechanical and hydraulic actuators is low, the output force is small, and the output displacement is difficult to meet the high-precision requirements; although the displacement resolution and frequency response of piezoelectric actuators are relatively high, but the output is small, it is easy to generate electricity. Breakdown, and drift phenomenon will occur. The phase-change temperature-controlled giant magnetostrictive micro-displacement actuator has the advantages of large displacement, strong force, high precision, fast response, high rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/04
Inventor 邬义杰刘楚辉
Owner ZHEJIANG UNIV
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