Single-driving type pure rotating and micro-positioning platform

A micro-positioning platform, pure rotation technology, applied to the parts of the instrument, instruments and other directions, can solve the problems of unfavorable rotation direction precision control, increase the complexity of motion control, different output characteristics of piezoelectric ceramics, etc., to achieve large rotation angle, The effect of simple control and high rotational accuracy

Inactive Publication Date: 2017-08-18
TIANJIN UNIV
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Problems solved by technology

In order to meet the increasingly complex motion requirements, these micro-positioning platforms usually include two motion modes: translation and rotation, but the rotation generally needs to be driven by more than two piezoelectric ceramics at the same time, which poses a challenge to the installation and control of piezoelec

Method used

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  • Single-driving type pure rotating and micro-positioning platform
  • Single-driving type pure rotating and micro-positioning platform
  • Single-driving type pure rotating and micro-positioning platform

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Embodiment Construction

[0013] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0014] see Figure 1 ~ Figure 3 , a single-drive pure rotation micro-positioning platform, including an active drive mechanism 1 and a passive compliance mechanism 2 .

[0015] The active drive mechanism adopts a left-right symmetrical structure, including a base I11 and a guide mechanism 13 formed inside it. The left and right ends of the guide mechanism 13 are respectively provided with an output end, and a bottom of the guide mechanism 13 is provided. Piezoelectric ceramics 17 are provided with pre-tightening bolts 18 below the piezoelectric ceramics 17, and the two output ends of the guide mechanism 13 are respectively connected with the input ends of a vertical reversing amplifying mechanism 14, and the vertical reversing amplifying mech...

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Abstract

The invention discloses a single-driving type pure rotating and micro-positioning platform. The single-driving type pure rotating and micro-positioning platform comprises an active driving mechanism and a passive compliance mechanism, wherein the active driving mechanism comprises a base I, and a guide mechanism which is driven through piezoelectric ceramics; each of two ends of the guide mechanism is connected with a vertical reversing amplifying mechanism; the vertical reversing amplifying mechanisms are connected to lever amplifying mechanisms I through flexible connecting blocks, and moving connecting blocks I are arranged at output ends of the lever amplifying mechanisms I; the passive compliance mechanism comprises a base II which is connected to be above the base I; a moving platform is arranged in the base II and is connected to the base II through an upper reinforcing plate spring and a lower reinforcing plate spring; each of the upper end and the lower end of the moving platform is provided with an input end which is connected with an output end of a movement transmission flexible rod; the input end; the input end of the movement transmission flexible rod is connected with the output end of one lever amplifying mechanism II; the input end of each lever amplifying mechanism II is provided with a moving connecting block II which is connected to the corresponding moving connecting block I. The single-driving type pure rotating and micro-positioning platform is simple and convenient to control, and high in rotating accuracy.

Description

technical field [0001] The invention relates to a single-drive pure rotation micro-positioning platform, which can realize a large rotation angle and has high rotation precision. Background technique [0002] With the development of micro-nano technology, multi-degree-of-freedom micro-positioning platforms driven by piezoelectric ceramics have been widely used in the micro-nano field. In order to meet the increasingly complex motion requirements, these micro-positioning platforms usually include two motion modes: translation and rotation, but the rotation generally needs to be driven by more than two piezoelectric ceramics at the same time, which poses a challenge to the installation and control of piezoelectric ceramics. up the challenge. Different installation preloads will lead to different output characteristics of piezoelectric ceramics, which is not conducive to the precision control of the rotation direction, and the simultaneous driving of multiple piezoelectric cer...

Claims

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Application Information

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IPC IPC(8): G12B5/00
Inventor 郭志永田延岭周重凯张大卫
Owner TIANJIN UNIV
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