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EAP driving structure based on negative stiffness preload

A driving structure, preload technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of limited adjustment range, achieve high power conversion efficiency, The effect of fast response, large output displacement and output power

Pending Publication Date: 2018-11-27
CHINA ACADEMY OF SPACE TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

like Image 6 As shown, the positive stiffness preload structure can improve the output displacement and output work by adjusting the modulus of the elastic element, but the adjustment range is limited

Method used

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  • EAP driving structure based on negative stiffness preload
  • EAP driving structure based on negative stiffness preload
  • EAP driving structure based on negative stiffness preload

Examples

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Embodiment Construction

[0037] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0038] Such as figure 1 with figure 2 As shown, a kind of driving structure based on negative stiffness preload EAP of the present embodiment includes:

[0039] structural support;

[0040] EAP flexible film 11, the EAP flexible film 11 is installed on the structure support and driven by the change of its own stiffness;

[0041] Negative stiffness preload 2 , the negative stiffness preload 2 is installed on the structural support, and is used for power output according to the change of the stiffness of the EAP flexible membrane 11 .

[0042] The model of the EAP flexible film 11 of this embodiment is VHB4910, and the initial state is: the film is stretched by 300-500% along the X and Y directions through a ...

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Abstract

The invention relates to an EAP driving structure based on a negative stiffness preload. The EAP driving structure based on the negative stiffness preload comprises a structural support, an EAP flexible thin film which is installed on the structural support and drives through stiffness change of the EAP flexible thin film and the negative stiffness preload which is installed on the structural support and is used for conducting power output according to the stiffness change of the EAP flexible thin film. By combining the EAP flexible thin film and the negative stiffness preload, compared with existing mechanical and electromagnetic actuators, the EAP driving structure based on the negative stiffness preload has the advantages of being simple in structure, fast in response, noiseless, non-heat dissipating, high in electric power conversion efficiency and the like, can be used on various flexible driving structures and can fast generate output displacement and apply work under electricalstimulation.

Description

technical field [0001] The invention relates to an EAP driving structure based on negative stiffness preload, in particular to a method of utilizing the force deformation characteristics of a negative stiffness elastic element (preload) to significantly improve the output displacement and output work of an EAP driving unit. Background technique [0002] EAP soft material (Electro-active Polymers), as a typical artificial muscle material, is an emerging intelligent polymer material in recent years. It can be used as a driver to convert electrical energy into mechanical energy, and can also convert mechanical energy into electrical energy to generate electricity. or sensing. Compared with traditional electromagnetic and piezoelectric generators or actuators, the EAP generator or actuator developed by using this material has high energy density, large electro-induced deformation, flexible and wearable, and drive-sensing integration. , high conversion efficiency, small environm...

Claims

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Application Information

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IPC IPC(8): H02N2/00
CPCH02N2/001
Inventor 王鹏飞李秉洋牛少华葛杰友占干
Owner CHINA ACADEMY OF SPACE TECHNOLOGY