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Orthogonal rhombic dual-mode precise piezoelectric stick-slip rotating platform and driving method thereof

A rotating platform, dual-mode technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problem of low static holding force, weak driving ability, displacement back and other problems, to achieve the effect of inhibiting displacement retreat, large holding force, and increasing load capacity

Pending Publication Date: 2022-03-29
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of the current piezoelectric stick-slip driven rotary platform, such as weak driving ability, low static holding force, and oscillation caused by displacement retreat, the present invention discloses an orthogonal rhombus dual-mode precision piezoelectric stick-slip rotary platform and its driving method

Method used

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  • Orthogonal rhombic dual-mode precise piezoelectric stick-slip rotating platform and driving method thereof
  • Orthogonal rhombic dual-mode precise piezoelectric stick-slip rotating platform and driving method thereof
  • Orthogonal rhombic dual-mode precise piezoelectric stick-slip rotating platform and driving method thereof

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specific Embodiment approach 1

[0035] Specific implementation mode one: combine Figure 1~Figure 13 To illustrate this embodiment, this embodiment provides a specific implementation of a precision piezoelectric stick-slip rotary platform using an orthogonal rhombus dual mode, and its specific implementation is expressed as follows:

[0036]The orthogonal rhombus double-mode precision piezoelectric stick-slip rotary platform is composed of a preload assembly 1, a stator 2, a rotor 3, a base 4, and an end cover 5, wherein the preload assembly 1 is placed in the base 4, And connected with the stator 2, the stator 2 is placed between the base 4 and the end cover 5, and is in contact with the rotor 3, the rotor 3 is placed on the base 4, and the end cover 5 is connected with the base 4.

[0037] The preload assembly 1 is provided with a threaded loader 1-1, a slide block 1-2, a fixed guide rod 1-3, a spring 1-4 and a connecting bolt 1-5, and the threaded loader 1-1 is glued on On the base 4, the slider 1-2 is i...

specific Embodiment approach 2

[0047] Specific implementation mode two: combination Figure 14 This embodiment is described. This embodiment provides a specific implementation of the driving method of the orthogonal rhombus dual-mode precision piezoelectric stick-slip rotary platform. The specific implementation is expressed as follows:

[0048] The driving method of the orthogonal rhombus double-mode precision piezoelectric stick-slip rotary platform can be divided into a single stack driving method and a coupling driving method. The voltage changes slowly in the viscous phase, and the voltage changes rapidly in the sliding phase, so as to realize the high-stability and precise rotary motion of the rotary table; when the coupling drive method is adopted, the piezoelectric stack I2-2 is also connected to an asymmetrical sawtooth wave signal, and the piezoelectric The stack II 2-5 inputs an asymmetrical sawtooth wave, and the rapid elongation stage of the piezoelectric stack II 2-5 acts on the rapid deformat...

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Abstract

The invention discloses an orthogonal rhombus dual-mode precise piezoelectric stick-slip rotating platform and a driving method thereof, and aims to solve the technical problems of low external interference resistance caused by poor static retention of a current micro-nano stick-slip rotating platform, motion oscillation caused by displacement rollback, weak output performance and the like. The motor is composed of a pre-tightening assembly, a stator, a rotor, a base and an end cover. The single-step displacement amount of the platform is increased through the rhombic displacement amplification mechanism, high-precision feeding and accurate positioning are achieved through a single-stacking driving mode, the operation speed and the load capacity of the rotating platform are improved through a coupling driving mode, displacement rollback is restrained, and motion oscillation is reduced; meanwhile, due to the fact that the stick-slip driver has a coupling driving mode, the stick-slip driver can have larger holding force in a static state and is high in external interference resistance in a non-working state; the rotor shell is in interference fit with the outer ring of the bearing, the vertical bearing force of the rotating table is transmitted to the bearing, the driving effect of the stator is not affected, and the load capacity of the rotating table is improved. The invention has the characteristics of simple structure, good output performance, high positioning precision, large static retentivity and the like, and has good development potential and application value in the field of precision driving and positioning.

Description

technical field [0001] The invention relates to an orthogonal rhombus dual-mode precision piezoelectric stick-slip rotary platform and a driving method thereof, belonging to the technical field of micro-nano precision manufacturing and control. Background technique [0002] With the rapid development of micro-nano technology, there is an increasing demand for precision micro-nano drive technology in technical fields such as ultra-precision machining, in-situ mechanical measurement, and biomedicine. The piezoelectric stick-slip drive has the advantages of small size, high precision, and no electromagnetic interference. As well as the advantages of fast response speed, piezoelectric stick-slip actuators have received extensive attention and applications in the current micro-actuator positioning field. [0003] Piezoelectric stick-slip driving is mainly to apply sawtooth excitation electrical signals to piezoelectric elements to excite the stator to produce alternating fast and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/10H02N2/12H02N2/14
CPCH02N2/10H02N2/123H02N2/14
Inventor 卢晓晖李岳胧程廷海胡胜雨孙雨杉阮文韬
Owner CHANGCHUN UNIV OF TECH
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