Inertial Impact Linear Actuators Based on Terfenol‑d Flakes

A technology of linear drive and inertial impact, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of poor reliability of the drive and affecting the motion accuracy of the drive block, etc. Achieve the effects of large driving stroke, improved motion accuracy and reliability, and fast response speed

Active Publication Date: 2017-06-16
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the inertial impact linear actuator using Terfenol-D material, the magnetic coil is mostly in direct contact with the drive block, the vibration of the power supply cable affects the motion accuracy of the drive block, and the reliability of the drive is poor

Method used

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  • Inertial Impact Linear Actuators Based on Terfenol‑d Flakes
  • Inertial Impact Linear Actuators Based on Terfenol‑d Flakes
  • Inertial Impact Linear Actuators Based on Terfenol‑d Flakes

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Embodiment Construction

[0022] In order to better understand the present invention, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] like figure 1 and figure 2 The shown inertial impact linear actuator based on Terfenol-D sheet includes a coil 1, a cylinder body 2 and a drive block 3, the coil 1 is wound on the outer peripheral surface of the cylinder body 2; the drive block 3 is arranged inside the cylinder body 2, and the drive block 3 and The cylinder body 2 is slidingly fitted; the driver also includes two elastic sheets 4 and several Terfenol-D sheets 5, the two elastic sheets 4 are oppositely arranged, and one end of the elastic sheet 4 is fixed on the drive block 3, and the elastic sheet 4 The other end is fixedly connected with a counterweight 6; the Terfenol-D sheet 5 is pasted on the outer surfaces of two elastic sheets 4 at intervals, and the maximum magnetostriction direction of the Terfenol-D sheet 5...

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Abstract

The invention discloses an inertial impact linear driver based on Terfenol-D slices, which includes a coil, a drive block and a cylinder with openings at both ends; the coil is wound on the outer peripheral surface of the cylinder, and the coil is fed with a sawtooth wave current; Inside the body, the drive block is slidingly matched with the cylinder body; the driver also includes two elastic sheets and several Terfenol-D thin sheets, the two elastic sheets are oppositely arranged, one end of the elastic sheet is fixed on the drive block, and the other end of the elastic sheet is fixedly connected with Counterweight; the Terfenol-D sheet is pasted on the outer surfaces of two elastic sheets at intervals, the maximum magnetostrictive direction of the Terfenol-D sheet is consistent, and is consistent with the length direction of the elastic sheet, the cylinder body, the driving block, and the counterweight Blocks and elastic sheets are made of non-magnetic materials. The invention avoids the influence of the vibration of the power supply cable on the motion precision, improves the reliability of the driver, can realize bidirectional driving, and has a large driving stroke.

Description

technical field [0001] The invention relates to the technical field of drivers, in particular to an inertial impact linear driver based on Terfenol-D flakes. Background technique [0002] Inertial impact linear actuator refers to a driving mechanism that uses a combination of inertial impact force and friction force to achieve precise linear displacement under the action of a sawtooth wave drive signal. The existing inertial impact linear actuators generally use piezoelectric materials as the driving elements, which have the characteristics of small size, low cost, and large motion strokes, and have been initially applied in the field of precision drives. However, the piezoelectric inertial impact linear drive is driven by voltage signals. During the movement of the driver, the moving body needs to drag the cable to provide electric energy. The self-weight and vibration of the power supply cable will have a great impact on the motion accuracy of the driver; in addition , Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02
Inventor 卢全国舒亮陶珍赵冉王欢
Owner NANCHANG INST OF TECH
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