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A device and a method for restraining the backward motion of a parasitic piezoelectric actuator by an arc-shaped structure hinge

A piezoelectric driver and arc-shaped structure technology, applied in piezoelectric effect/electrostrictive or magnetostrictive motors, generators/motors, electrical components, etc., can solve motion instability, increase control complexity, etc. problem, to achieve the effect of improving motion stability and self-locking, simple structure and control, and high resolution

Pending Publication Date: 2019-01-15
JILIN UNIV
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Problems solved by technology

However, this approach brings some other problems, such as increasing the complexity of the control and causing instability in motion

Method used

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  • A device and a method for restraining the backward motion of a parasitic piezoelectric actuator by an arc-shaped structure hinge
  • A device and a method for restraining the backward motion of a parasitic piezoelectric actuator by an arc-shaped structure hinge
  • A device and a method for restraining the backward motion of a parasitic piezoelectric actuator by an arc-shaped structure hinge

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Embodiment Construction

[0021] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.

[0022] see figure 1 As shown, the device for suppressing the retreating motion of the parasitic piezoelectric driver by the arc-shaped structure hinge of the present invention includes a base 1, a driving unit and an initial gap adjustment unit, and the drive unit and the initial gap adjustment unit are respectively connected to the base 1 by screws. connection; the drive unit is composed of an arc-shaped structure flexible hinge 3, two piezoelectric stacks 4, a guide rail slider 5 and a guide rail fixed end 6, and the two piezoelectric stacks 4 are respectively installed on the In the two grooves of the arc-shaped flexible hinge 3, the arc-shaped flexible hinge 3 is connected to the upper end surface of the horizontal micro-adjustment mechanism 2 of the initial gap adjustment unit through screws, and the fixed en...

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Abstract

The invention relates to a device and a method for restraining the backward motion of a parasitic piezoelectric actuator by an arc-shaped structure hinge, belonging to the field of precision positioning. The driving unit and the initial gap adjusting unit of the device are respectively connected with the base through screws. The initial clearance between the arc-shaped flexure hinge in the drive unit and the guide slider can be adjusted by rotating the knob of the horizontal fine-tuning mechanism. When the driving voltage of the piezoelectric stack drops rapidly in a certain initial gap, the frictional force of the arc-shaped flexure hinge caused by elastic recovery can balance the frictional force of the arc-shaped flexure hinge, thereby effectively restraining the backward motion and greatly improving the motion stability of the piezoelectric actuator. The invention has the advantages of simple structure, convenient control and high resolution of the parasitic motion principle inherited driver, effectively eliminates the backward phenomenon, realizes the horizontal steady movement, and improves the overall output performance of the parasitic motion principle piezoelectric driver.

Description

Technical field [0001] The invention relates to the field of precision positioning, and in particular to a device and method for suppressing the retreat motion of a parasitic piezoelectric actuator by an arc-structured hinge. It can be applied to precision machinery, microelectronics manufacturing, precision optical systems, micro-operation, precision / ultra- Achieve large stroke, no retraction and high-precision positioning in precision machining and other fields. Background technique [0002] The basic principle of piezoelectric drive technology is based on the inverse piezoelectric effect of piezoelectric ceramic materials, which produces rotation or linear motion by controlling its mechanical deformation. It has the characteristics of simple structure, flexible design, high precision and high resolution. Actuators based on piezoelectric materials have important applications in precision machinery, microelectronics manufacturing, precision optical systems, micro-operation,...

Claims

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Application Information

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IPC IPC(8): H02N2/00H02N2/04H02N2/06
CPCH02N2/001H02N2/04H02N2/065
Inventor 杨智鑫黄虎周晓勤赵宏伟董景石范尊强
Owner JILIN UNIV
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