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Space bending shape memory alloy driver and thereof drive control device thereof

A technology of memory alloy and memory alloy wire, which is applied in the direction of machines/engines, mechanisms for generating mechanical power, mechanical equipment, etc., can solve problems such as use restrictions, and achieve good adaptability, simple control methods, and light weight.

Inactive Publication Date: 2008-02-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the embedded SMAA can only realize plane movement, and its use is limited in fields with space operation requirements.

Method used

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  • Space bending shape memory alloy driver and thereof drive control device thereof
  • Space bending shape memory alloy driver and thereof drive control device thereof
  • Space bending shape memory alloy driver and thereof drive control device thereof

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and example the present invention is described in further detail.

[0023] As shown in FIG. 1 and FIG. 2 , the space bending SMAA includes an end fixing part 1 , a motion executing part 2 and a front connecting part 3 .

[0024] The end fixing part 1 includes an end sleeve 5 and an SMA wire fixing piece 6 , and the SMA wire fixing piece 6 is fixed in the end sleeve 5 . As shown in Figure 4, the SMA wire fixing sheet 6 is provided with a first central through hole 16 and n positioning holes 15, wherein, 3≤n≤6, n positioning holes 15 are centered on the first central through hole 16, It is symmetrically distributed on the SMA wire fixing sheet 6 .

[0025] The motion executing part 2 is composed of a mold glue cylinder 7 , a "U" shape memory SMA wire 10 and a curvature sensor 4 .

[0026] As shown in Figure 3, the second central through hole 14 and n thread-embedded through holes 13 are provided on the mold glue cylinder 7,...

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Abstract

The present invention discloses a space warp shape memory alloy driver and a driving control device. The driver comprises a U-shaped shape memory alloy wire, a plurality of curvature sensors, a molding rubber cylinder, a sleeve head, and shape memory alloy fixing sheets and positioning sheets. The driving controlling device comprises a detection circuit, a selective amplifying circuit, a digital signal processor and a power driving circuit. The present invention utilizes the characteristic that the shape memory alloy has the shape memory effect with the change of the temperature to realize the space free bending motion of the driver. The structure of the present invention is compact, the self weight is light, the output force-weight ratio is high, the motion is smooth, the control is flexible, the manufacture cost is low, the multi-direction bending can be realized, and the present invention has the space running capability. The present invention satisfies the comprehensive requirements of miniaturization, precise positioning and soft transmission, and has obvious technical superiority and potential and extensive application prospect in the fields of anthropomorphic mechanical arm, medical artificial limb and endoscope.

Description

technical field [0001] The invention belongs to the technical field of application of functional materials, and relates to the technical field of application of shape memory alloys. Specifically, it relates to a space bending shape memory alloy driver and its drive control device. Background technique [0002] Shape memory alloy (Shape Memory Alloy, SMA) is a kind of functional material, which has shape memory effect (Shape Memory Effect, SME), that is, after SMA is subjected to high-temperature setting treatment, it is cooled to room temperature or low temperature, and an external force is applied to make SMA Plastic deformation occurs, and if the SMA is heated to a certain temperature, the plastic deformation can disappear and return to the shape memorized after high temperature setting. Using the SME of SMA, various shape memory alloy actuators (Shape Memory Alloy Actuator, SMAA) can be made. [0003] Compared with traditional electromagnetic drives, SMAA has many advant...

Claims

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Application Information

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IPC IPC(8): F03G7/06
Inventor 杨凯辜承林张德林贺晋华
Owner HUAZHONG UNIV OF SCI & TECH
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