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A Multi-loop Biased Magnetostrictive Actuator Excited by Parallel Twisted Wire Harness

A magnetostrictive and magnetostrictive rod technology, which is applied to piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc. and other problems, to achieve the effect of reducing the working heat, prolonging the continuous working time, and uniform bias field strength

Active Publication Date: 2021-10-08
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] A closed magnetic circuit can increase the driving field strength on the magnetic material inside the magnetostrictive driver, but the design of this magnetic circuit will increase the volume additionally in the radial direction, and the closed structure of this magnetic circuit is placed in a closed In the shell, it is not conducive to heat dissipation and installation fit

Method used

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  • A Multi-loop Biased Magnetostrictive Actuator Excited by Parallel Twisted Wire Harness
  • A Multi-loop Biased Magnetostrictive Actuator Excited by Parallel Twisted Wire Harness
  • A Multi-loop Biased Magnetostrictive Actuator Excited by Parallel Twisted Wire Harness

Examples

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Effect test

Embodiment

[0033] like Figure 1-9 Among them, the multi-ring bias magnetostrictive actuator excited by the parallel twisted wire harness of the present invention mainly includes the following parts: displacement generation and output assembly, magnetic conduction circuit, bias magnetic field generation assembly, excitation magnetic field generation assembly.

[0034] like figure 1 As shown, the displacement generating and output assembly includes: an adjusting end cover 7 , a linear bearing 6 , a disc spring 8 , an output rod 9 , a heat conductor 3 and a sliced ​​magnetostrictive rod 14 . The lower part of the adjusting end cap 7 fixed on the shell is pressed against the disc spring 8, and when the adjusting end cap 7 is screwed forward and backward, the preload of the disc spring 8 is also changing. In general, the preload has a more appropriate range. The linear bearing 6 is installed in the adjustment end cover 7 with a transition fit. The linear bearing 6 is a self-lubricating lin...

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Abstract

The invention relates to a multi-ring offset magnetostrictive driver excited by a parallel twisted wire harness, which belongs to the technical field of precision positioning; A magnetic circuit, a multi-ring permanent magnet bias unit and a heat conductor; a magnetostrictive rod and a magnetic conductive column are arranged along the central axis; The magnetostrictive rod is connected to the output unit through the magnetic column; the heat conductor is arranged between the end surface of the coil on the outer periphery of the output unit and the end surface of the cage magnetic circuit. The operating current of each strand in the magnetostrictive driver coil of the present invention is increased, the calorific value is reduced, and the continuous working time is prolonged. The bias field strength of the magnetostrictive rod at the center is more uniform. The magnetostrictive rod is sliced ​​to effectively increase the operating frequency of the driver and reduce the eddy current loss caused by the alternating magnetic field.

Description

technical field [0001] The invention relates to a multi-ring offset magnetostrictive driver excited by parallel twisted wire bundles, which belongs to the technical field of precision positioning. Background technique [0002] As a key component, magnetostrictive actuators are widely used in precision instruments such as sensors and aerospace, and their construction principles have been explored extensively. In terms of excitation signal input, most of them are controlled by multi-turn coils wound with copper wires, but Zhang Tianli of Beihang University and others proposed a linear magnetostrictive driver without coil permanent magnet excitation (Chinese Patent No.: CN104167954A). The driver is designed to reduce the large amount of heat generated by the energization of the drive coil. It uses permanent magnet components that can rotate with each other to generate a drive magnetic field of varying size to control the elongation and contraction of the magnetostrictive materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/04H02N2/06
CPCH02N2/04H02N2/062
Inventor 孙小庆柏转胡俊王庆霞
Owner DONGHUA UNIV
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