Piezoelectric precision driving-based linear bidirectional actuator and working method thereof

One Actuator, Sophisticated Technology

Pending Publication Date: 2018-04-17
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing piezoelectric ceramic actuators, electrostrictive actuators, magnetostrictive actuators, and shape memory alloy

Method used

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  • Piezoelectric precision driving-based linear bidirectional actuator and working method thereof
  • Piezoelectric precision driving-based linear bidirectional actuator and working method thereof
  • Piezoelectric precision driving-based linear bidirectional actuator and working method thereof

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Experimental program
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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0030] Such as figure 1 The linear bidirectional actuator of the present invention shown includes a first phosphor bronze substrate 1, a first piezoelectric ceramic sheet 2 installed on the first phosphor bronze substrate 1, and connects the first phosphor bronze substrate 1 and the second phosphor bronze substrate 4, the second piezoelectric ceramic sheet 5 installed on the second phosphor bronze substrate 4, the feet 6 of the first phosphor bronze substrate and the feet 7 of the second phosphor bronze substrate.

[0031] The connecting rod 3 is a rigid rod, and the two sides of the first phosphor bronze substrate 1 and the second phosphor bronze substrate 4 are respectively connected by a connecting rod 3, and the connection position of the connecting rod 3 is as far away as possible from the feet 6 and the first phosphor bronze substrate. The feet 7 of the se...

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PUM

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Abstract

The invention discloses a linear two-way actuator based on piezoelectric precision drive and its working method. The actuator is mainly composed of a phosphor bronze substrate, a piezoelectric ceramic sheet located on the upper end surface of the phosphor bronze substrate and a connecting rod. Most traditional actuators have complex structures, and most of them are rotary actuators, which are difficult to miniaturize. The actuator of the present invention is composed of a pair of phosphor bronze substrates facing each other and connected by a connecting rod. bidirectional movement on the The linear bidirectional actuator based on piezoelectric precision drive of the present invention has a simple structure and is easy to be miniaturized. It can be used in scenarios such as drug supply in the biopsy channel of the digestive tract endoscope, and the movement of medical devices such as biopsy forceps, etc., and can be realized on a predetermined track Smooth, reliable, precise, controlled bi-directional motion and feed action in tiny channels.

Description

technical field [0001] The invention relates to the field of medical equipment, more precisely, a linear bidirectional actuator based on piezoelectric precision drive and a working method thereof. Background technique [0002] With the development of modern medical technology, precision surgery has received more and more attention. Different from the extensive traditional surgery dominated by experience, the realization of precision surgery relies on modern technology, especially high-tech precision medical equipment. With the assistance of medical equipment and precise positioning, the exact location of the lesion can be determined for targeted treatment. This will not only reduce the waste of medical resources, but also reduce the suffering of patients. [0003] Existing medical devices generally use actuators as active control components for positioning, and these components tend to be miniaturized and high-precision with the needs of medical applications. Existing pie...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/06
CPCH02N2/028H02N2/06
Inventor 彭瀚旻杨剑之朱攀丞圣娟
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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