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Magnetostrictive linear driver with linear output

A magnetostrictive, linear drive technology, applied in piezoelectric/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve problems such as difficult precision control, and achieve good linear output , the effect of low cost

Inactive Publication Date: 2012-05-02
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the nonlinear characteristics of the material itself, the output displacement of the magnetostrictive rod has a nonlinearity similar to that of the material, such as figure 2 As shown, it has caused great difficulties for precise control

Method used

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  • Magnetostrictive linear driver with linear output
  • Magnetostrictive linear driver with linear output
  • Magnetostrictive linear driver with linear output

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 as attached Figure 1-3 Shown: A linear output magnetostrictive linear actuator, including one end of the cylindrical shell 4 fixedly connected to the guide sleeve 1, the other end of the cylindrical shell 4 fixedly connected to the closed end cap 10, a hollow water cooling sleeve 5 The closed two ends are respectively installed in the center of the guide sleeve 1 and the end cover 10, the two ends of the hollow water cooling sleeve 5 are respectively provided with a water inlet pipe 3 and a water outlet pipe 9, and the magnetostrictive rod 6 is mounted on the hollow water cooling sleeve 5 with clearance fit. Center; the coil connected with the current source is installed in the annular space between the inner wall of the cylindrical shell 4 and the hollow water-cooling sleeve 5, and one end of the output shaft 2 that is slidingly fitted with the inner cavity of the guide sleeve 1 penetrates into the hollow water-cooling sleeve 5 center, and close to the end...

Embodiment 2

[0016] Example 2 : Embodiment 1 In the magnetostrictive linear actuator with linear output, the number of radially wound layers of 1# coil 7 is 60 layers, and the number of radially wound layers of 2# coil 8 is 12 layers.

Embodiment 3

[0017] Example 3 : Embodiment 1 In the magnetostrictive linear actuator with linear output, the number of radially wound layers of 1# coil 7 is 70 layers, and the number of radially wound layers of 2# coil 8 is 18 layers.

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Abstract

The invention relates to a magnetostrictive linear driver with linear output. The magnetostrictive linear driver is provided with a first coil and a second coil, which are in end-to-end connection and different in number of radial winding layers, wherein the two coils have the same winding direction, and are connected in series with each other and driven by the same current source; the two coils have the same axial length, and the sum of axial length is equal to the length of a magnetostriction rod; during energization, the two coils apply an axial non-uniform magnetic field to the magnetostriction rod; the magnetic induction intensity of the first half section, which is positioned in the first coil, of the magnetostriction rod is high, and the magnetic induction intensity of the second half section, which is positioned in the second coil, of the magnetostriction rod is lower, so that the deformations of the two sections of the magnetostriction rod are inconsistent; each part is subjected to non-uniform striction along the axial direction; and after combination, by output overlapping of the deformation of each part, the linearity of the total deformation of the magnetostriction rod of the magnetostrictive linear driver is higher than the linearity of the total deformation of the magnetostriction rod of the conventional magnetostrictive linear driver with a uniform magnetic field, so that the magnetostrictive linear driver has good linear output.

Description

technical field [0001] The invention relates to a magnetostrictive driver, in particular to a linear output magnetostrictive linear driver. Background technique [0002] One end of the cylindrical shell of the existing magnetostrictive linear drive is fixedly connected to the guide sleeve, the other end of the cylindrical shell is fixedly connected to the closed end cap, and the closed two ends of the hollow water-cooling sleeve are respectively installed on the guide sleeve and the end cover. In the center of the cover, the two ends of the hollow water-cooling casing are respectively provided with water inlet pipes and water outlet pipes, and the magnetostrictive rod is installed in the center of the hollow water-cooling casing; the coil connected with the current source is installed on the inner wall of the cylindrical shell and the hollow In the annular space between the water-cooling sleeves, one end of the output shaft that slides with the inner cavity of the guide slee...

Claims

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Application Information

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IPC IPC(8): H02N2/02
Inventor 卢全国唐刚徐斌周敏刘坤陈定方刘德辉祝志芳陶珍舒亮陶孟仑赵亚鹏
Owner NANCHANG INST OF TECH
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