Linkage adjustable precise piezoelectric stick-slip driving device and control method thereof

A driving device, piezoelectric technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, generators/motors, etc., can solve the problems of poor output response and low positioning accuracy, and achieve enhanced Response speed, high positioning accuracy, and fast output response

Pending Publication Date: 2019-12-20
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 poor output response and low positioning accuracy of existing piezoelectric stick-slip driving devices, the present invention discloses a linkage adjustable precision piezoelectric stick-slip driving device and its control method

Method used

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  • Linkage adjustable precise piezoelectric stick-slip driving device and control method thereof
  • Linkage adjustable precise piezoelectric stick-slip driving device and control method thereof
  • Linkage adjustable precise piezoelectric stick-slip driving device and control method thereof

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specific Embodiment approach 1

[0038] Specific implementation mode one: combine Figure 1~Figure 15 Describe this embodiment. This embodiment provides a specific implementation of a linkage adjustable precision piezoelectric stick-slip drive device. The specific implementation of the linkage and adjustable precision piezoelectric stick-slip drive device is expressed as follows:

[0039] The linkage adjustable precision piezoelectric stick-slip drive device is composed of a platform base unit 1, a drive unit 2, a guide rail unit 3 and an upper cover 4; wherein, the drive unit 2 is installed on the platform base unit 1 , the guide rail unit 3 is installed on the platform base unit 1 and located above the drive unit 2 , and the upper cover 4 is installed on the guide rail unit 3 and is in contact with the drive unit 2 .

[0040] The platform base unit 1 includes a base bottom plate 1-1, a base side plate 1-2 and side plate fixing screws 1-3; the two base side plates 1-2 are fixed by the side plate fixing screw...

specific Embodiment approach 2

[0051] Specific implementation mode two: combination Figure 16 To illustrate this embodiment, this embodiment proposes a specific implementation of a control method for a linkage and adjustable precision piezoelectric stick-slip drive device. The control method for a linkage and controllable precision piezoelectric stick-slip drive device is expressed as follows:

[0052] In the control method, a double excitation electric signal group is adopted, the excitation electric signal A is a positive sawtooth wave electric signal, and the excitation electric signal B is a negative sawtooth electric signal. For Ⅰ2-6 and piezoelectric stack Ⅱ2-9:

[0053] t 1 ~t 2 Stage: The excitation electric signal A is a slow rising stage, which makes the piezoelectric stack Ⅰ2-6 slowly elongate; the excitation electric signal B is a slow falling stage, which makes the piezoelectric stack Ⅱ2-9 slowly shorten, forming hinge interlocking, and enhancing piezoelectric adhesion. Motion effect of sli...

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Abstract

The invention discloses a linkage adjustable precise piezoelectric stick-slip driving device and a control method thereof, so as to solve the technical problems of low positioning precision, poor output response and the like of the existing piezoelectric stick-slip driving device. The linkage adjustable precise piezoelectric stick-slip driving device is composed of a platform base unit, a drivingunit, a guide rail unit and an upper cover. The driving unit is installed on the platform base unit, the guide rail unit is installed on the platform base unit, and the upper cover is installed on theguide rail unit and makes contact with the driving unit. A single-arm driving type bidirectional stator is adopted, comprehensive regulation and control over the friction force in the driving processof the piezoelectric stick-slip driving device can be achieved, and straight beam flexible hinges are arranged at the two ends of the end beam so that the response speed of the driving unit can be increased; under the excitation of the double excitation electric signal groups, the interference influence on the movement of the upper cover during the driving of the driving unit is reduced, the displacement back-off is reduced, the bidirectional mechanical output performance of the driving device is further improved, and the driving device can be widely applied to the technical field of micro-nano precision driving and positioning.

Description

technical field [0001] The invention relates to a linkage adjustable precision piezoelectric stick-slip drive device and a control method thereof, belonging to the technical field of micro-nano precision drive and positioning. Background technique [0002] Piezoelectric drive technology is a new type of drive technology that uses the inverse piezoelectric effect of piezoelectric materials to convert electrical energy into mechanical energy. Piezoelectric drive devices are driven by the above principles. At present, most precision positioning and micro-nano operations This is achieved by means of piezoelectric drives. Due to the remarkable advantages of high output precision, fast response speed, and strong anti-electromagnetic interference ability of the piezoelectric drive device, it has developed into one of the mainstream technologies for high-precision positioning and material micro-nano mechanical performance testing. [0003] Piezoelectric stick-slip actuators are wid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/02H02N2/04H02N2/06
CPCH02N2/028H02N2/04H02N2/043H02N2/065H02N2/06H02N2/021H02N2/0055
Inventor 卢晓晖徐毓鸿乔广达李泽霖程廷海于洋张晓松王健龙
Owner CHANGCHUN UNIV OF TECH
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