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  3. Electrostatic Actuators
  4. Artificial muscle (electrostatic actuator) (Strobe Co., Ltd.)
Artificial muscle (electrostatic actuator)-Artificial muscle (electrostatic actuator)
Artificial muscle (electrostatic actuator)-Strobe Co., Ltd.

Artificial muscle (electrostatic actuator)
Strobe Co., Ltd.

About This Product

Artificial muscle (electrostatic actuator) 1. Actuator principle and structure

■Basic model ~Parallel plate capacitor~

The basic structure of a stacked electrostatic actuator is a parallel plate capacitor. A stacked electrostatic actuator uses electrostatic attraction generated between electrode plates as a driving force. The smaller the distance between the plates, the greater the output.

■Structure of stacked electrostatic actuator

A stacked electrostatic actuator has a paper spring structure in which two ribbon-shaped electrodes are alternately folded. 2. Structural improvements for ideal operation

■Structure with thick electrode part

By making the electrode part thicker (thinner the hinge part), the electrode can be made difficult to deform while the hinge remains easily deformable. Currently, there are two ways to create electrodes: one is to make the electrode thicker by attaching an insulating film (such as PET) to a regular ribbon-shaped electrode, and the other is to make it thinner by etching only the part that will become the hinge part. are.

■Structure with triangular electrode part

If the electrode part is square, only two of the four sides (nearby) are shared by the opposite electrode, so the distortion of the electrode part when the actuator is extended is large. On the other hand, if the shape of the electrode is triangular, only two of the three sides are shared, and the distortion of the electrode can be reduced. A triangular actuator can be fabricated by folding the ribbon-shaped electrodes alternately at a 120° angle. 3.Refining In order to obtain a large generated force, the distance between the electrode plates may be shortened. We are thinking of shortening the distance between electrodes through miniaturization and increasing the generated force per unit area. To date, we have succeeded in driving a 0.3 mm square actuator and confirmed an increase in the generated force per unit area. Furthermore, ribbon-shaped electrodes have already been miniaturized to a scale of 0.1 mm square. 4.Parallelization Micro actuators generate only a small amount of force, but the generated force can be increased by parallelizing them (by arranging them side by side to increase the plate area). By performing such integration, the laminated electrostatic actuator can be used even on a macro scale.

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    Artificial muscle (electrostatic actuator)

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1 Models of Artificial muscle (electrostatic actuator)

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Artificial muscle (electrostatic actuator)

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About Company Handling This Product

Strobe Co., Ltd.

  • Japan

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Electrostatic Actuators
Electrostatic Actuators　Strobe Co., Ltd.
Strobe Co., Ltd.

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