A flexible actuator

Abstract

The invention discloses a flexible actuator, comprising: a cover plate, which is a ring structure; a bottom plate, which is located below the cover plate, is a circular structure, has a blind hole inside, and an air-filling hole at the bottom of the blind hole; The dielectric elastomer is pre-stretched and tightly pressed between the lower end surface of the cover plate and the upper end surface of the bottom plate. The dielectric elastic body in the middle part of the cover plate and the bottom plate is the active area. The dielectric elastomer consists of multiple layers and single layers. Dielectric elastomers are superimposed, and the active area of ​​each layer of dielectric elastomer is divided into multiple symmetrical sub-areas in the same way; flexible electrodes are coated on the upper and lower surfaces of each sub-area, and the adjacent flexible electrodes are kept Spacing: Aluminum foils are arranged one by one on the upper and lower surfaces of each sub-region, and are drawn out from the boundary formed by the bottom plate and the cover plate. The invention has the advantages of good flexibility, large driving force, simple structure, good versatility, simple structure, repeated use, low cost, no noise, no magnetism and easy installation.

Description

technical field [0001] The invention relates to the technical field of actuators, in particular to a flexible actuator. Background technique [0002] The actuation methods of traditional actuators mostly adopt mechanical actuation, motor actuation, and hydraulic actuation. These traditional actuators have problems such as long response time, complex mechanical structure, high noise, poor flexibility, and poor bionic performance. In addition to the traditional actuators, in recent years, researchers have developed many actuators based on new functional materials such as shape memory alloys and magnetostrictive materials. However, the above-mentioned actuators also have long response time, The defects of poor flexibility and poor bionic performance. [0003] Dielectric elastomer is a kind of electric field activated polymer material, commonly known as artificial muscle because of its performance similar to natural muscle. Compared with other new functional materials and trad...

AI Technical Summary

Problems solved by technology

[0005] (1) It uses a film as a supporting frame, the structure is relatively complex, and it affects the flexibility performance

[0006] (2) It can only generate actuation forces in the left and right directions through the deformation of the first dielectric elastomer film and the second dielectric elastomer film, and the application field is limited

[0007] (3) Its dielectric elastomer film is a single layer, and only one surface is coated with electrodes, and the output driving force is limited

[0008] (4) The electrodes used are ordinary graphite powder materials, which have poor conductivity and fluidity, which affects the deformation ability of dielectric elastomers

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