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Pneumatically driven multistable structure

A pneumatically driven, multi-stable technology, used in motor vehicles, space navigation equipment, space navigation aircraft, etc., can solve the problems of high cost, impact, slow response speed, etc., to achieve low cost, low energy consumption, good elastic effect

Active Publication Date: 2020-07-10
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are that the cost of electromagnetic drive is high, the response speed is slow, and it will have a certain impact on its own stiffness and curvature. Therefore, it is necessary to propose an intelligent drive method for pneumatic drive.

Method used

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  • Pneumatically driven multistable structure
  • Pneumatically driven multistable structure
  • Pneumatically driven multistable structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 In the shown embodiment 1, a pneumatically driven multistable structure includes a multistable laminated board 3 and a pneumatic soft driver 2 . Such as figure 2As shown, the multi-stable laminated board 3 is made of T700 carbon fiber epoxy resin composite material, which is prepared by the autoclave process; the multi-stable laminated board 3 includes three stable units, which are the orthogonal laying of the stable unit 31, the opposing It is called laying stable unit 32 and orthogonal laying stable unit 31, each stable unit includes two layers of T700 carbon fiber epoxy resin composite material prepreg, that is, multi-stable laminate 3 includes six layers of carbon fiber prepreg 1, Two layers of fiber directions of each stable unit are laid orthogonally or anti-symmetrically, and the fiber laying angles of each layer of the multi-stable laminate 3 are respectively 0°, 90°, -45°, 45°, 0°, 90°, and the cross setting, The end of the lower layer of ca...

Embodiment 2

[0047] A pneumatically driven multistable structure, including a bistable laminated plate and a pneumatic soft driver, its structure is roughly the same as that of Embodiment 1, the difference is that the bistable laminated plate includes a stable unit, which is composed of two layers of positive Cross- or anti-symmetrical T700 carbon fiber epoxy resin composite material prepreg is cured. The pneumatic soft driver includes a driver inner tank, a cavity, an air intake channel, winding wires and sealing end caps at both ends of the cavity, and the soft driver is activated. The length corresponds to the length of the bistable laminate.

[0048] Gas is filled into the cavity of the gas soft driver, and the bistable laminate changes from the first stable structure to the second stable structure.

[0049] The number of stable units in the multi-stable structure can be increased or decreased according to the actual situation, the number of stable structures produced will also be chan...

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Abstract

The invention discloses a multi-stable structure driven pneumatically. The multi-stable structure comprises at least one steady-state unit, each stable unit comprises two layers of carbon fiber prepregs which are orthogonally or antisymmetrically laid. The multi-stable structure further comprises a pneumatic soft driver correspondingly fixed to the surface of each stable unit; the pneumatic soft driver comprises a driver inner container and a radial limiting piece arranged on the surface of the driver inner container, a cavity is formed in the driver inner container in the length direction, and a gas inlet channel communicated with the cavity is formed in the driver inner container. The multi-stable structure has multiple stable states of different forms, does not need to be maintained byexternal force, has good driving response capacity, and can be stably converted among multiple stable states. The structure is simple, convenient to control and low in energy consumption, and is suitable for the deformable fields of aerospace, soft robots and the like.

Description

technical field [0001] The invention relates to the technical field of intelligent deformable structure and composite material research, in particular to a pneumatically driven multi-stable structure. Background technique [0002] Composite bistable refers to a structure that has two deformation capabilities and can maintain a stable state without continuous energy input after deformation. It is precisely because of this characteristic that it has great application potential in fields such as deformable wings, unfolded structures, and deployable solar panels. With the development of the aviation and aerospace industries, higher requirements are put forward for the deformation ability of deformable structures. Multi-stable laminates formed by splicing multiple stable units can meet this requirement. The intelligent driving method of the multi-stable structure mainly uses shape memory alloys, piezoelectric materials, etc. at present. However, due to the slow response speed o...

Claims

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Application Information

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IPC IPC(8): B64C3/46B64G1/44B25J9/14B29C70/34
CPCB64C3/46B64G1/443B25J9/14B29C70/342Y02T50/40
Inventor 张征周一松倪向奇孙敏李吉泉吴化平彭翔丁浩
Owner ZHEJIANG UNIV OF TECH
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