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A single-rotation permanent magnet clamped linear stepping piezoelectric actuator and a driving method of the actuator

A piezoelectric driver and linear stepping technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of short life, complex electronic control of the driver and mechanical structure , low resolution and other problems, to achieve the effect of long service life, novel method and high resolution

Inactive Publication Date: 2019-01-15
ZHEJIANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention aims to solve the problems of complex electronic control and mechanical structure, low resolution and short service life of the existing driver, and provides a single-rotation permanent magnet clamp linear stepping piezoelectric driver and a driving method for the driver

Method used

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  • A single-rotation permanent magnet clamped linear stepping piezoelectric actuator and a driving method of the actuator
  • A single-rotation permanent magnet clamped linear stepping piezoelectric actuator and a driving method of the actuator
  • A single-rotation permanent magnet clamped linear stepping piezoelectric actuator and a driving method of the actuator

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specific Embodiment approach 1

[0033] Specific implementation mode one: refer to Figure 1 to Figure 4 Specifically explain this embodiment, a single-rotation permanent magnet clamp linear stepping piezoelectric driver described in the embodiment, which includes: a base 1, a DC motor bracket 2, a DC motor 14, a rotating magnet fixed disk 10, and a magnet 4 , mass block 13, support plate A3, support plate B15, working surface plate 5, piezoelectric stack 9, sliding magnetic block 7, fixed magnetic block 11, pre-tightening screw 6, pre-tightening screw 12, moving steel bar 8 ;

[0034] The moving part is a moving steel bar 8, which is placed on the sliding magnetic block 7 and the fixed magnetic block 11;

[0035] The driving part is composed of a working surface plate 5, a piezoelectric stack 9, a sliding magnetic block 7, a fixed magnetic block 11, a pre-tightening screw 6, and a pre-tightening screw 12. The bottom of the fixed magnetic block 11 is designed with a threaded hole, through which the screw Fi...

specific Embodiment approach 2

[0042] Specific implementation mode two: refer to Figure 5 , Figure 6 , Figure 7Specifically illustrate this embodiment, a driving method of a single-rotation permanent magnet clamp linear stepping piezoelectric driver described in the specific embodiment, the method is:

[0043] When the magnet 4 in the time-sharing clamping magnetic field rotates to below the fixed magnetic block 11 as Figure 7 As shown in (1), the piezoelectric stack 9 is not energized at this moment, and the excitation signal of the piezoelectric stack 9 is Figure 6 In section a-b in the middle, when the magnet 4 rotates to the bottom of the sliding magnetic block 7, the piezoelectric stack 9 is continuously energized as Figure 6 Middle section c-d, at this time, the piezoelectric stack 9 will elongate simultaneously with the left sliding magnetic block 7, and due to the magnetic force, it will drive the upper moving steel bar 8 to slide one step to the left. Figure 7 as shown in (2);

[0044] ...

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Abstract

The invention relates to a single-rotation permanent magnet clamped linear stepping piezoelectric actuator and a driving method of the actuator, belonging to the technical field of precision instruments and equipment. At both end of that piezoelectric stack, A magnetic conductive block is fix and screwed, piezoelectric stack and sliding magnetic block, A magnetic permeable block is fix to form a driving part, A moving steel bar is placed on the drive portion, The fixed magnetic permeable block is fixedly connected with the working surface plate, the working surface plate is fixedly connected with the support plate, the support plate is fixedly connected with the upper surface of the bottom plate, the magnet and the mass block are fixedly connected with the magnet fixed disk, the magnet fixed disk is horizontally fixed on the output shaft of the DC motor, the DC motor is fixedly connected with the bracket, and the bracket is fixedly connected with the bottom plate. The invention has theadvantages of solving the problems that the friction and wear of the existing precision driving device are serious and the precision is difficult to be improved from the angle of improving the clampfriction generation mode, and improving the output stability of the linear stepping type piezoelectric actuator.

Description

technical field [0001] The invention belongs to the technical field of precision instruments and equipment, in particular to a linear stepping piezoelectric driver. Background technique [0002] In order to meet the precise positioning requirements of aerospace / biomedical / MEMS / precision manufacturing and other fields, precision drives based on the principles of electromagnetic / electrostatic / thermal deformation / magnetostriction / shape memory alloy / electrodeformation / piezoelectricity (or The research on motor / motor / actuator / actuator, etc.) has become a hot spot both at home and abroad. Each type of driver has its own advantages and applicable fields. The piezoelectric driver has the characteristics of high resolution, precise positioning, simple structure, convenient control, and no electromagnetic interference. Therefore, it has a wider range of applications and has been used in biological cell operations, micro-electromechanical In systems such as micro-nano indentation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02H02N2/06
CPCH02N2/021H02N2/06
Inventor 程光明王仁明温建明
Owner ZHEJIANG NORMAL UNIVERSITY
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