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Longitudinal-bending compound peristaltic precision piezoelectric actuator and its excitation method

A piezoelectric driver, a sophisticated technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc. Positioning power output and large range of motion strokes to achieve the effect of unlimited motion stroke, good application prospects and high positioning accuracy

Active Publication Date: 2019-04-12
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the problem that the existing piezoelectric actuators cannot have fast movement, nanometer positioning, powerful output and large-scale movement stroke at the same time

Method used

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  • Longitudinal-bending compound peristaltic precision piezoelectric actuator and its excitation method
  • Longitudinal-bending compound peristaltic precision piezoelectric actuator and its excitation method
  • Longitudinal-bending compound peristaltic precision piezoelectric actuator and its excitation method

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specific Embodiment approach 1

[0030] Specific implementation mode one: refer to figure 1 , Figure 7 and Figure 8 Describe this embodiment in detail. The longitudinal-bending compound peristaltic precision piezoelectric driver described in this embodiment is a linear output type longitudinal-bending compound peristaltic precision piezoelectric driver, including fixed seats 1, n A transducer 2 and a linear mover 3 arranged in parallel, wherein, n is an even number greater than or equal to 2 ( figure 1 where n is 2);

[0031] Wherein, each transducer 2 includes a longitudinal vibration ceramic group 2-1, a bending vibration ceramic group 2-2, an electrode piece 2-3 and a front clamping body 2-4 in contact with the linear mover 3;

[0032] The longitudinal vibration ceramic group 2-1 includes m longitudinal vibration ceramic pieces 2-1-1, wherein m is an even number greater than or equal to 2 ( figure 1 where m is 4); the longitudinal vibration ceramic sheet 2-1-1 is polarized along its axial direction, ...

specific Embodiment approach 2

[0039] Specific implementation mode two: refer to figure 2 and image 3 Describe in detail this embodiment, the excitation method realized by the longitudinal-bending compound peristaltic precision piezoelectric driver. The mover 3 realizes the movement in two directions of left and right, and realizes the excitation method of moving to the right, such as figure 2 Shown:

[0040] Step 11: Divide n parallel transducers 2 into two groups on average. In the initial state, under the action of pre-tightening force, the driving feet 2-6 of the first group of transducers and the second group of transducers The driving feet 2-6 are all in contact with the linear mover 3;

[0041] Step 1 and 2: The longitudinal vibration ceramic group 2-1 of the first group of transducers applies positive electric elongation, and the driving feet 2-6 of the first group of transducers move upward to press the linear mover 3; at the same time, the second group of transducers The longitudinal vibrat...

specific Embodiment approach 3

[0061] Specific implementation mode three: in combination with the instruction manual Figure 4 , Figure 7 and Figure 8 This embodiment will be further described in detail. This embodiment provides a longitudinal-bend compound peristaltic precision piezoelectric driver, which is a rotary output type longitudinal-bending compound peristaltic precision piezoelectric driver, including a base 5 and n transducers arranged along the circumference 2 and the rotating mover 4, wherein, n is an even number greater than or equal to 2, Figure 4 where n is 2, and the two transducers 2 are arranged opposite to each other, wherein the transducers 3 each include a longitudinal vibration ceramic group 2-1, a bending vibration ceramic group 2-2, an electrode piece 2-3 and a rotating mover 4 contacts the front holding body 2-4. The longitudinal vibration ceramic group 2-1 includes m longitudinal vibration ceramic pieces 2-1-1, wherein m is an even number greater than or equal to 2 ( Fig...

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Abstract

The invention discloses a longitudinal-bending composite peristaltic precision piezoelectric driver and an excitation method thereof, and relates to the technical field of piezoelectric driving. The invention aims to solve a problem that an existing piezoelectric driver cannot have the properties of rapid movement, nanometer-scale positioning, strong power output and large-range movement stroke. The longitudinal-bending composite peristaltic precision piezoelectric driver is characterized in that a ceramic group formed by a bending vibration ceramic group and a longitudinal vibration ceramic group is arranged on a rear clamping body, n rear clamping bodies are arranged on a fixed base in parallel or arranged on a base body along the circumferential direction of the base body, a front clamping body is arranged at the front surface of each ceramic group, and each front clamping body is contacted with a linear rotor or a rotary rotor through a driving foot; the longitudinal vibration ceramic groups perform telescopic deformation so as to control contact / separation of the corresponding driving feet and the rotor, the bending ceramic groups perform bending deformation so as to realize stepping driving for the rotor, and continuous driving is realized through coordinately setting the operating process of a plurality of energy converters. The longitudinal-bending composite peristaltic precision piezoelectric driver has the advantages of large stroke, high positioning precision, adjustable output speed and output power and the like, and has good application prospects in the fields such as intelligent robots, aviation and aerospace and high-end equipment manufacturing.

Description

technical field [0001] The invention relates to a longitudinal-bend compound peristaltic precision piezoelectric driver and an excitation method thereof. The utility model belongs to the field of piezoelectric drive technology. Background technique [0002] The piezoelectric actuator mainly uses the inverse piezoelectric effect of piezoelectric materials to convert input electrical energy into output mechanical energy. It has the characteristics of simple and compact structure, no electromagnetic interference, fast response speed, and self-locking when power is off. It has been successfully applied in optical precision Instruments, aerospace, precision medical equipment and other fields are currently one of the more commonly used precision driving and micro-positioning methods. [0003] According to different driving principles, current piezoelectric drivers are mainly divided into resonant piezoelectric drivers and non-resonant piezoelectric drivers. Among them, the reson...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02N2/02H02N2/04H02N2/10H02N2/12
CPCH02N2/003H02N2/021H02N2/026H02N2/04H02N2/101H02N2/103H02N2/12
Inventor 刘英想王良石胜君刘军考冯培连
Owner HARBIN INST OF TECH
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