Theoretical analysis of an electrostatic linear actuator developed as a biomimicking skeletal muscle

Nobuyuki Kabei, Toshiyuki Miyazaki, Hiroshi Kurata, Motoki Ogasawara, Tomohiro Murayama, Kazuo Nagatake, Kiichi Tsuchiya

Research output: Contribution to journalArticle


Recently Yano proposed a new theory of muscle contraction, termed the electrostatic linear actuator model. Based on this theory, we developed an electrostatic linear actuator as a biomimicking skeletal muscle. The fundamental actuator unit consists of a parallel plate capacitor and a slider made of dielectric material. Based on this model, we derived the theoretical formula for the thrust of the actuator. This formula revealed the following facts. The thrust can be maintained constant when the supply voltage is kept constant, and can be markedly increased by optimizing the dielectric constant of the fluid which fills the space of the capacitor. Using this formula, we designed a simple practical model expected to generate a thrust of 10 mN with the stroke of 10 mm. The surface area of this actuator was 1 cm2.

Original languageEnglish
Pages (from-to)400-405
Number of pages6
JournalJSME International Journal, Series 3: Vibration, Control Engineering, Engineering for Industry
Issue number3
Publication statusPublished - 1992 Sep
Externally publishedYes


ASJC Scopus subject areas

  • Engineering(all)

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