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Piezoelectric precision linear driving platform based on stick-slip inertia

A linear drive and inertial technology, applied in the direction of piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve the problems of short service life, short life, small movement stroke, etc. Achieve the effect of low cost, high speed and fast motion speed

Active Publication Date: 2017-08-29
JILIN UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a piezoelectric precision linear drive platform based on stick-slip inertia, which solves the problems of small motion stroke and short life of the existing piezoelectric precision drive platform
At the same time, with replaceable replaceable driving contacts to solve the problem of short service life caused by wear between the stator and the mover

Method used

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  • Piezoelectric precision linear driving platform based on stick-slip inertia
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  • Piezoelectric precision linear driving platform based on stick-slip inertia

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Embodiment Construction

[0017] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0018] see Figure 1 to Figure 4 As shown, the piezoelectric precision linear drive platform based on the stick-slip inertia of the present invention can output displacement through the fast feed mode or the precision feed mode: in the early stage of motion, the fast feed mode is adopted because the mover slider is far away from the target position , that is, apply a sawtooth wave to the piezoelectric stack to achieve rapid displacement; in the later stage of the movement, because the mover slider is closer to the target position, a precision feeding method is adopted, that is, a continuous voltage is applied to the piezoelectric stack, and it can be combined with a displacement sensor Closed-loop feedback realizes precise micro-feeding motion. It includes a drive unit, a motion unit and a pretension unit, wherei...

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Abstract

The invention relates to a piezoelectric precision linear driving platform based on stick-slip inertia, and relates to the precision driving field. The driving platform comprises a driving unit, a motion unit and a pre-tightening unit; the driving unit consists of a piezoelectric stack A, a piezoelectric stack B, a flexible hinge assembly, a replaceable driving contactor A and a replaceable driving contactor B, and is used for providing power source for the motion unit; the motion unit consists of a guide rail and a slide block, so as to provide a displacement output for the driving platform; and, the pre-tightening unit consists of a pre-tightening bolt A, a pre-tightening bolt B and a pre-tightening bolt C, so as to adjust the pre-tightening force between the driving unit and the motion unit. The driving platform is advantaged in compact structure, adjustable speed, big motion displacement, high location precision and strong reliability, and is suitable for the motion control place which has a strict space size requirement, and has a certain requirement to the motion displacement and the location precision.

Description

technical field [0001] The invention relates to the field of precision drive, in particular to a piezoelectric precision linear drive platform based on stick-slip inertia. It is used in precision and ultra-precision machining, micro-electro-mechanical systems, large-scale and VLSI manufacturing, precision optics, biomedical engineering and other fields. Background technique [0002] With the development of science and technology, the requirements for high-precision driving devices in scientific fields such as precision and ultra-precision machining, biomedical engineering, aerospace, and micro-nano micromanipulation robots continue to increase. Traditional driving methods such as motors, hydraulic transmissions, and worm gears have gradually failed to meet the requirements of micro / nano-level motion accuracy and miniaturization of device volume in many fields of modern technology. In order to meet the needs of high-precision driving devices in many fields, researchers have ...

Claims

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Application Information

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IPC IPC(8): H02N2/02H02N2/04
CPCH02N2/025H02N2/04Y02E60/16
Inventor 赵宏伟王吉如范尊强任壮马筱溪杨立国黄加创
Owner JILIN UNIV
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